diff --git a/Android.bp b/Android.bp
index b28567a..7d75f62 100644
--- a/Android.bp
+++ b/Android.bp
@@ -68,9 +68,10 @@
 
 subdirs = [
     "cmds/*",
-    "core/jni",
+    "core/*",
     "libs/*",
     "media/*",
+    "proto",
     "tools/*",
     "native/android",
     "native/graphics/jni",
diff --git a/Android.mk b/Android.mk
index 2b12416..4e036b5 100644
--- a/Android.mk
+++ b/Android.mk
@@ -906,8 +906,7 @@
 # FRAMEWORKS_BASE_SUBDIRS comes from build/core/pathmap.mk
 dirs_to_document := \
 	$(dirs_to_check_apis) \
-  $(addprefix ../../, $(FRAMEWORKS_DATA_BINDING_JAVA_SRC_DIRS)) \
-  $(addprefix ../../, $(FRAMEWORKS_SUPPORT_JAVA_SRC_DIRS)) \
+	$(addprefix ../../, $(FRAMEWORKS_DATA_BINDING_JAVA_SRC_DIRS))
 
 patterns_to_not_document := \
 	$(call find-no-docs-pattern, $(dirs_to_document))
@@ -942,7 +941,8 @@
 framework_docs_LOCAL_INTERMEDIATE_SOURCES := \
 	$(framework_res_source_path)/android/R.java \
 	$(framework_res_source_path)/android/Manifest.java \
-	$(framework_res_source_path)/com/android/internal/R.java
+	$(framework_res_source_path)/com/android/internal/R.java \
+	$(patsubst $(TARGET_OUT_COMMON_INTERMEDIATES)/%,%,$(libcore_to_document_generated))
 
 framework_docs_LOCAL_API_CHECK_JAVA_LIBRARIES := \
 	core-oj \
@@ -955,6 +955,8 @@
 	framework \
 	voip-common
 
+# Platform docs can refer to Support Library APIs, but we don't actually build
+# them as part of the docs target, so we need to include them on the classpath.
 framework_docs_LOCAL_JAVA_LIBRARIES := \
 	$(framework_docs_LOCAL_API_CHECK_JAVA_LIBRARIES) \
 	$(FRAMEWORKS_SUPPORT_JAVA_LIBRARIES)
@@ -1001,20 +1003,15 @@
     -werror -hide 111 -hide 113 -hide 121 \
     -overview $(LOCAL_PATH)/core/java/overview.html \
 
-# Allow the support library to add its own droiddoc options.
-include $(LOCAL_PATH)/../support/droiddoc.mk
-
 framework_docs_LOCAL_API_CHECK_ADDITIONAL_JAVA_DIR:= \
 	$(call intermediates-dir-for,JAVA_LIBRARIES,framework,,COMMON)
 
 framework_docs_LOCAL_ADDITIONAL_JAVA_DIR:= \
-	$(framework_docs_LOCAL_API_CHECK_ADDITIONAL_JAVA_DIR) \
-	$(foreach lib,$(FRAMEWORKS_SUPPORT_JAVA_LIBRARIES),$(call intermediates-dir-for,JAVA_LIBRARIES,$(lib),,COMMON)) \
-	$(foreach lib,$(FRAMEWORKS_SUPPORT_JAVA_LIBRARIES),$(call intermediates-dir-for,JAVA_LIBRARIES,$(lib)-res,,COMMON))
+	$(framework_docs_LOCAL_API_CHECK_ADDITIONAL_JAVA_DIR)
 
 framework_docs_LOCAL_ADDITIONAL_DEPENDENCIES := \
     frameworks/base/docs/knowntags.txt \
-    libcore/Docs.mk
+    $(libcore_to_document_generated)
 
 samples_dir := development/samples/browseable
 
@@ -1053,6 +1050,11 @@
 		-resourcesdir $(LOCAL_PATH)/docs/html/reference/images/ \
 		-resourcesoutdir reference/android/images/
 
+# Federate Support Library references against local API file.
+framework_docs_LOCAL_DROIDDOC_OPTIONS += \
+		-federate SupportLib https://developer.android.com \
+		-federationapi SupportLib prebuilts/sdk/current/support-api.txt
+
 # ====  the api stubs and current.xml ===========================
 include $(CLEAR_VARS)
 
diff --git a/api/current.txt b/api/current.txt
index 518d972..3bff61f 100644
--- a/api/current.txt
+++ b/api/current.txt
@@ -18040,13 +18040,11 @@
     method public synchronized void applyLocalizedPattern(java.lang.String);
     method public synchronized void applyPattern(java.lang.String);
     method public synchronized boolean areSignificantDigitsUsed();
-    method public synchronized boolean equals(java.lang.Object);
     method public java.lang.StringBuffer format(double, java.lang.StringBuffer, java.text.FieldPosition);
     method public java.lang.StringBuffer format(long, java.lang.StringBuffer, java.text.FieldPosition);
     method public java.lang.StringBuffer format(java.math.BigInteger, java.lang.StringBuffer, java.text.FieldPosition);
     method public java.lang.StringBuffer format(java.math.BigDecimal, java.lang.StringBuffer, java.text.FieldPosition);
     method public java.lang.StringBuffer format(android.icu.math.BigDecimal, java.lang.StringBuffer, java.text.FieldPosition);
-    method public synchronized android.icu.util.Currency getCurrency();
     method public synchronized android.icu.text.CurrencyPluralInfo getCurrencyPluralInfo();
     method public synchronized android.icu.util.Currency.CurrencyUsage getCurrencyUsage();
     method public synchronized android.icu.text.DecimalFormatSymbols getDecimalFormatSymbols();
@@ -18054,12 +18052,8 @@
     method public synchronized int getGroupingSize();
     method public synchronized java.math.MathContext getMathContext();
     method public synchronized android.icu.math.MathContext getMathContextICU();
-    method public synchronized int getMaximumFractionDigits();
-    method public synchronized int getMaximumIntegerDigits();
     method public synchronized int getMaximumSignificantDigits();
     method public synchronized byte getMinimumExponentDigits();
-    method public synchronized int getMinimumFractionDigits();
-    method public synchronized int getMinimumIntegerDigits();
     method public synchronized int getMinimumSignificantDigits();
     method public synchronized int getMultiplier();
     method public synchronized java.lang.String getNegativePrefix();
@@ -18070,19 +18064,13 @@
     method public synchronized java.lang.String getPositivePrefix();
     method public synchronized java.lang.String getPositiveSuffix();
     method public synchronized java.math.BigDecimal getRoundingIncrement();
-    method public synchronized int getRoundingMode();
     method public synchronized int getSecondaryGroupingSize();
-    method public synchronized int hashCode();
     method public synchronized boolean isDecimalPatternMatchRequired();
     method public synchronized boolean isDecimalSeparatorAlwaysShown();
     method public synchronized boolean isExponentSignAlwaysShown();
-    method public synchronized boolean isGroupingUsed();
     method public synchronized boolean isParseBigDecimal();
-    method public synchronized boolean isParseIntegerOnly();
-    method public synchronized boolean isParseStrict();
     method public synchronized boolean isScientificNotation();
     method public java.lang.Number parse(java.lang.String, java.text.ParsePosition);
-    method public synchronized void setCurrency(android.icu.util.Currency);
     method public synchronized void setCurrencyPluralInfo(android.icu.text.CurrencyPluralInfo);
     method public synchronized void setCurrencyUsage(android.icu.util.Currency.CurrencyUsage);
     method public synchronized void setDecimalFormatSymbols(android.icu.text.DecimalFormatSymbols);
@@ -18091,15 +18079,10 @@
     method public synchronized void setExponentSignAlwaysShown(boolean);
     method public synchronized void setFormatWidth(int);
     method public synchronized void setGroupingSize(int);
-    method public synchronized void setGroupingUsed(boolean);
     method public synchronized void setMathContext(java.math.MathContext);
     method public synchronized void setMathContextICU(android.icu.math.MathContext);
-    method public synchronized void setMaximumFractionDigits(int);
-    method public synchronized void setMaximumIntegerDigits(int);
     method public synchronized void setMaximumSignificantDigits(int);
     method public synchronized void setMinimumExponentDigits(byte);
-    method public synchronized void setMinimumFractionDigits(int);
-    method public synchronized void setMinimumIntegerDigits(int);
     method public synchronized void setMinimumSignificantDigits(int);
     method public synchronized void setMultiplier(int);
     method public synchronized void setNegativePrefix(java.lang.String);
@@ -18107,15 +18090,12 @@
     method public synchronized void setPadCharacter(char);
     method public synchronized void setPadPosition(int);
     method public synchronized void setParseBigDecimal(boolean);
-    method public synchronized void setParseIntegerOnly(boolean);
     method public deprecated void setParseMaxDigits(int);
-    method public synchronized void setParseStrict(boolean);
     method public synchronized void setPositivePrefix(java.lang.String);
     method public synchronized void setPositiveSuffix(java.lang.String);
     method public synchronized void setRoundingIncrement(java.math.BigDecimal);
     method public synchronized void setRoundingIncrement(android.icu.math.BigDecimal);
     method public synchronized void setRoundingIncrement(double);
-    method public synchronized void setRoundingMode(int);
     method public synchronized void setScientificNotation(boolean);
     method public synchronized void setSecondaryGroupingSize(int);
     method public synchronized void setSignificantDigitsUsed(boolean);
@@ -25557,7 +25537,6 @@
 
   public static final class IpSecManager.SecurityParameterIndex implements java.lang.AutoCloseable {
     method public void close();
-    method protected void finalize();
     method public int getSpi();
   }
 
@@ -39614,6 +39593,8 @@
     method public int getLatitude();
     method public int getLongitude();
     method public int getNetworkId();
+    method public java.lang.CharSequence getOperatorAlphaLong();
+    method public java.lang.CharSequence getOperatorAlphaShort();
     method public int getSystemId();
     method public void writeToParcel(android.os.Parcel, int);
     field public static final android.os.Parcelable.Creator<android.telephony.CellIdentityCdma> CREATOR;
@@ -39625,8 +39606,13 @@
     method public int getBsic();
     method public int getCid();
     method public int getLac();
-    method public int getMcc();
-    method public int getMnc();
+    method public deprecated int getMcc();
+    method public java.lang.String getMccStr();
+    method public deprecated int getMnc();
+    method public java.lang.String getMncStr();
+    method public java.lang.String getMobileNetworkOperator();
+    method public java.lang.CharSequence getOperatorAlphaLong();
+    method public java.lang.CharSequence getOperatorAlphaShort();
     method public deprecated int getPsc();
     method public void writeToParcel(android.os.Parcel, int);
     field public static final android.os.Parcelable.Creator<android.telephony.CellIdentityGsm> CREATOR;
@@ -39636,8 +39622,13 @@
     method public int describeContents();
     method public int getCi();
     method public int getEarfcn();
-    method public int getMcc();
-    method public int getMnc();
+    method public deprecated int getMcc();
+    method public java.lang.String getMccStr();
+    method public deprecated int getMnc();
+    method public java.lang.String getMncStr();
+    method public java.lang.String getMobileNetworkOperator();
+    method public java.lang.CharSequence getOperatorAlphaLong();
+    method public java.lang.CharSequence getOperatorAlphaShort();
     method public int getPci();
     method public int getTac();
     method public void writeToParcel(android.os.Parcel, int);
@@ -39648,8 +39639,13 @@
     method public int describeContents();
     method public int getCid();
     method public int getLac();
-    method public int getMcc();
-    method public int getMnc();
+    method public deprecated int getMcc();
+    method public java.lang.String getMccStr();
+    method public deprecated int getMnc();
+    method public java.lang.String getMncStr();
+    method public java.lang.String getMobileNetworkOperator();
+    method public java.lang.CharSequence getOperatorAlphaLong();
+    method public java.lang.CharSequence getOperatorAlphaShort();
     method public int getPsc();
     method public int getUarfcn();
     method public void writeToParcel(android.os.Parcel, int);
diff --git a/api/system-current.txt b/api/system-current.txt
index 03fdf3a..d2f9197 100644
--- a/api/system-current.txt
+++ b/api/system-current.txt
@@ -19548,13 +19548,11 @@
     method public synchronized void applyLocalizedPattern(java.lang.String);
     method public synchronized void applyPattern(java.lang.String);
     method public synchronized boolean areSignificantDigitsUsed();
-    method public synchronized boolean equals(java.lang.Object);
     method public java.lang.StringBuffer format(double, java.lang.StringBuffer, java.text.FieldPosition);
     method public java.lang.StringBuffer format(long, java.lang.StringBuffer, java.text.FieldPosition);
     method public java.lang.StringBuffer format(java.math.BigInteger, java.lang.StringBuffer, java.text.FieldPosition);
     method public java.lang.StringBuffer format(java.math.BigDecimal, java.lang.StringBuffer, java.text.FieldPosition);
     method public java.lang.StringBuffer format(android.icu.math.BigDecimal, java.lang.StringBuffer, java.text.FieldPosition);
-    method public synchronized android.icu.util.Currency getCurrency();
     method public synchronized android.icu.text.CurrencyPluralInfo getCurrencyPluralInfo();
     method public synchronized android.icu.util.Currency.CurrencyUsage getCurrencyUsage();
     method public synchronized android.icu.text.DecimalFormatSymbols getDecimalFormatSymbols();
@@ -19562,12 +19560,8 @@
     method public synchronized int getGroupingSize();
     method public synchronized java.math.MathContext getMathContext();
     method public synchronized android.icu.math.MathContext getMathContextICU();
-    method public synchronized int getMaximumFractionDigits();
-    method public synchronized int getMaximumIntegerDigits();
     method public synchronized int getMaximumSignificantDigits();
     method public synchronized byte getMinimumExponentDigits();
-    method public synchronized int getMinimumFractionDigits();
-    method public synchronized int getMinimumIntegerDigits();
     method public synchronized int getMinimumSignificantDigits();
     method public synchronized int getMultiplier();
     method public synchronized java.lang.String getNegativePrefix();
@@ -19578,19 +19572,13 @@
     method public synchronized java.lang.String getPositivePrefix();
     method public synchronized java.lang.String getPositiveSuffix();
     method public synchronized java.math.BigDecimal getRoundingIncrement();
-    method public synchronized int getRoundingMode();
     method public synchronized int getSecondaryGroupingSize();
-    method public synchronized int hashCode();
     method public synchronized boolean isDecimalPatternMatchRequired();
     method public synchronized boolean isDecimalSeparatorAlwaysShown();
     method public synchronized boolean isExponentSignAlwaysShown();
-    method public synchronized boolean isGroupingUsed();
     method public synchronized boolean isParseBigDecimal();
-    method public synchronized boolean isParseIntegerOnly();
-    method public synchronized boolean isParseStrict();
     method public synchronized boolean isScientificNotation();
     method public java.lang.Number parse(java.lang.String, java.text.ParsePosition);
-    method public synchronized void setCurrency(android.icu.util.Currency);
     method public synchronized void setCurrencyPluralInfo(android.icu.text.CurrencyPluralInfo);
     method public synchronized void setCurrencyUsage(android.icu.util.Currency.CurrencyUsage);
     method public synchronized void setDecimalFormatSymbols(android.icu.text.DecimalFormatSymbols);
@@ -19599,15 +19587,10 @@
     method public synchronized void setExponentSignAlwaysShown(boolean);
     method public synchronized void setFormatWidth(int);
     method public synchronized void setGroupingSize(int);
-    method public synchronized void setGroupingUsed(boolean);
     method public synchronized void setMathContext(java.math.MathContext);
     method public synchronized void setMathContextICU(android.icu.math.MathContext);
-    method public synchronized void setMaximumFractionDigits(int);
-    method public synchronized void setMaximumIntegerDigits(int);
     method public synchronized void setMaximumSignificantDigits(int);
     method public synchronized void setMinimumExponentDigits(byte);
-    method public synchronized void setMinimumFractionDigits(int);
-    method public synchronized void setMinimumIntegerDigits(int);
     method public synchronized void setMinimumSignificantDigits(int);
     method public synchronized void setMultiplier(int);
     method public synchronized void setNegativePrefix(java.lang.String);
@@ -19615,15 +19598,12 @@
     method public synchronized void setPadCharacter(char);
     method public synchronized void setPadPosition(int);
     method public synchronized void setParseBigDecimal(boolean);
-    method public synchronized void setParseIntegerOnly(boolean);
     method public deprecated void setParseMaxDigits(int);
-    method public synchronized void setParseStrict(boolean);
     method public synchronized void setPositivePrefix(java.lang.String);
     method public synchronized void setPositiveSuffix(java.lang.String);
     method public synchronized void setRoundingIncrement(java.math.BigDecimal);
     method public synchronized void setRoundingIncrement(android.icu.math.BigDecimal);
     method public synchronized void setRoundingIncrement(double);
-    method public synchronized void setRoundingMode(int);
     method public synchronized void setScientificNotation(boolean);
     method public synchronized void setSecondaryGroupingSize(int);
     method public synchronized void setSignificantDigitsUsed(boolean);
@@ -27753,7 +27733,6 @@
 
   public static final class IpSecManager.SecurityParameterIndex implements java.lang.AutoCloseable {
     method public void close();
-    method protected void finalize();
     method public int getSpi();
   }
 
@@ -43045,6 +43024,8 @@
     method public int getLatitude();
     method public int getLongitude();
     method public int getNetworkId();
+    method public java.lang.CharSequence getOperatorAlphaLong();
+    method public java.lang.CharSequence getOperatorAlphaShort();
     method public int getSystemId();
     method public void writeToParcel(android.os.Parcel, int);
     field public static final android.os.Parcelable.Creator<android.telephony.CellIdentityCdma> CREATOR;
@@ -43056,8 +43037,13 @@
     method public int getBsic();
     method public int getCid();
     method public int getLac();
-    method public int getMcc();
-    method public int getMnc();
+    method public deprecated int getMcc();
+    method public java.lang.String getMccStr();
+    method public deprecated int getMnc();
+    method public java.lang.String getMncStr();
+    method public java.lang.String getMobileNetworkOperator();
+    method public java.lang.CharSequence getOperatorAlphaLong();
+    method public java.lang.CharSequence getOperatorAlphaShort();
     method public deprecated int getPsc();
     method public void writeToParcel(android.os.Parcel, int);
     field public static final android.os.Parcelable.Creator<android.telephony.CellIdentityGsm> CREATOR;
@@ -43067,8 +43053,13 @@
     method public int describeContents();
     method public int getCi();
     method public int getEarfcn();
-    method public int getMcc();
-    method public int getMnc();
+    method public deprecated int getMcc();
+    method public java.lang.String getMccStr();
+    method public deprecated int getMnc();
+    method public java.lang.String getMncStr();
+    method public java.lang.String getMobileNetworkOperator();
+    method public java.lang.CharSequence getOperatorAlphaLong();
+    method public java.lang.CharSequence getOperatorAlphaShort();
     method public int getPci();
     method public int getTac();
     method public void writeToParcel(android.os.Parcel, int);
@@ -43079,8 +43070,13 @@
     method public int describeContents();
     method public int getCid();
     method public int getLac();
-    method public int getMcc();
-    method public int getMnc();
+    method public deprecated int getMcc();
+    method public java.lang.String getMccStr();
+    method public deprecated int getMnc();
+    method public java.lang.String getMncStr();
+    method public java.lang.String getMobileNetworkOperator();
+    method public java.lang.CharSequence getOperatorAlphaLong();
+    method public java.lang.CharSequence getOperatorAlphaShort();
     method public int getPsc();
     method public int getUarfcn();
     method public void writeToParcel(android.os.Parcel, int);
diff --git a/api/test-current.txt b/api/test-current.txt
index 57c6581..d8a71a5 100644
--- a/api/test-current.txt
+++ b/api/test-current.txt
@@ -18092,13 +18092,11 @@
     method public synchronized void applyLocalizedPattern(java.lang.String);
     method public synchronized void applyPattern(java.lang.String);
     method public synchronized boolean areSignificantDigitsUsed();
-    method public synchronized boolean equals(java.lang.Object);
     method public java.lang.StringBuffer format(double, java.lang.StringBuffer, java.text.FieldPosition);
     method public java.lang.StringBuffer format(long, java.lang.StringBuffer, java.text.FieldPosition);
     method public java.lang.StringBuffer format(java.math.BigInteger, java.lang.StringBuffer, java.text.FieldPosition);
     method public java.lang.StringBuffer format(java.math.BigDecimal, java.lang.StringBuffer, java.text.FieldPosition);
     method public java.lang.StringBuffer format(android.icu.math.BigDecimal, java.lang.StringBuffer, java.text.FieldPosition);
-    method public synchronized android.icu.util.Currency getCurrency();
     method public synchronized android.icu.text.CurrencyPluralInfo getCurrencyPluralInfo();
     method public synchronized android.icu.util.Currency.CurrencyUsage getCurrencyUsage();
     method public synchronized android.icu.text.DecimalFormatSymbols getDecimalFormatSymbols();
@@ -18106,12 +18104,8 @@
     method public synchronized int getGroupingSize();
     method public synchronized java.math.MathContext getMathContext();
     method public synchronized android.icu.math.MathContext getMathContextICU();
-    method public synchronized int getMaximumFractionDigits();
-    method public synchronized int getMaximumIntegerDigits();
     method public synchronized int getMaximumSignificantDigits();
     method public synchronized byte getMinimumExponentDigits();
-    method public synchronized int getMinimumFractionDigits();
-    method public synchronized int getMinimumIntegerDigits();
     method public synchronized int getMinimumSignificantDigits();
     method public synchronized int getMultiplier();
     method public synchronized java.lang.String getNegativePrefix();
@@ -18122,19 +18116,13 @@
     method public synchronized java.lang.String getPositivePrefix();
     method public synchronized java.lang.String getPositiveSuffix();
     method public synchronized java.math.BigDecimal getRoundingIncrement();
-    method public synchronized int getRoundingMode();
     method public synchronized int getSecondaryGroupingSize();
-    method public synchronized int hashCode();
     method public synchronized boolean isDecimalPatternMatchRequired();
     method public synchronized boolean isDecimalSeparatorAlwaysShown();
     method public synchronized boolean isExponentSignAlwaysShown();
-    method public synchronized boolean isGroupingUsed();
     method public synchronized boolean isParseBigDecimal();
-    method public synchronized boolean isParseIntegerOnly();
-    method public synchronized boolean isParseStrict();
     method public synchronized boolean isScientificNotation();
     method public java.lang.Number parse(java.lang.String, java.text.ParsePosition);
-    method public synchronized void setCurrency(android.icu.util.Currency);
     method public synchronized void setCurrencyPluralInfo(android.icu.text.CurrencyPluralInfo);
     method public synchronized void setCurrencyUsage(android.icu.util.Currency.CurrencyUsage);
     method public synchronized void setDecimalFormatSymbols(android.icu.text.DecimalFormatSymbols);
@@ -18143,15 +18131,10 @@
     method public synchronized void setExponentSignAlwaysShown(boolean);
     method public synchronized void setFormatWidth(int);
     method public synchronized void setGroupingSize(int);
-    method public synchronized void setGroupingUsed(boolean);
     method public synchronized void setMathContext(java.math.MathContext);
     method public synchronized void setMathContextICU(android.icu.math.MathContext);
-    method public synchronized void setMaximumFractionDigits(int);
-    method public synchronized void setMaximumIntegerDigits(int);
     method public synchronized void setMaximumSignificantDigits(int);
     method public synchronized void setMinimumExponentDigits(byte);
-    method public synchronized void setMinimumFractionDigits(int);
-    method public synchronized void setMinimumIntegerDigits(int);
     method public synchronized void setMinimumSignificantDigits(int);
     method public synchronized void setMultiplier(int);
     method public synchronized void setNegativePrefix(java.lang.String);
@@ -18159,15 +18142,12 @@
     method public synchronized void setPadCharacter(char);
     method public synchronized void setPadPosition(int);
     method public synchronized void setParseBigDecimal(boolean);
-    method public synchronized void setParseIntegerOnly(boolean);
     method public deprecated void setParseMaxDigits(int);
-    method public synchronized void setParseStrict(boolean);
     method public synchronized void setPositivePrefix(java.lang.String);
     method public synchronized void setPositiveSuffix(java.lang.String);
     method public synchronized void setRoundingIncrement(java.math.BigDecimal);
     method public synchronized void setRoundingIncrement(android.icu.math.BigDecimal);
     method public synchronized void setRoundingIncrement(double);
-    method public synchronized void setRoundingMode(int);
     method public synchronized void setScientificNotation(boolean);
     method public synchronized void setSecondaryGroupingSize(int);
     method public synchronized void setSignificantDigitsUsed(boolean);
@@ -25667,7 +25647,6 @@
 
   public static final class IpSecManager.SecurityParameterIndex implements java.lang.AutoCloseable {
     method public void close();
-    method protected void finalize();
     method public int getSpi();
   }
 
@@ -39838,6 +39817,8 @@
     method public int getLatitude();
     method public int getLongitude();
     method public int getNetworkId();
+    method public java.lang.CharSequence getOperatorAlphaLong();
+    method public java.lang.CharSequence getOperatorAlphaShort();
     method public int getSystemId();
     method public void writeToParcel(android.os.Parcel, int);
     field public static final android.os.Parcelable.Creator<android.telephony.CellIdentityCdma> CREATOR;
@@ -39849,8 +39830,13 @@
     method public int getBsic();
     method public int getCid();
     method public int getLac();
-    method public int getMcc();
-    method public int getMnc();
+    method public deprecated int getMcc();
+    method public java.lang.String getMccStr();
+    method public deprecated int getMnc();
+    method public java.lang.String getMncStr();
+    method public java.lang.String getMobileNetworkOperator();
+    method public java.lang.CharSequence getOperatorAlphaLong();
+    method public java.lang.CharSequence getOperatorAlphaShort();
     method public deprecated int getPsc();
     method public void writeToParcel(android.os.Parcel, int);
     field public static final android.os.Parcelable.Creator<android.telephony.CellIdentityGsm> CREATOR;
@@ -39860,8 +39846,13 @@
     method public int describeContents();
     method public int getCi();
     method public int getEarfcn();
-    method public int getMcc();
-    method public int getMnc();
+    method public deprecated int getMcc();
+    method public java.lang.String getMccStr();
+    method public deprecated int getMnc();
+    method public java.lang.String getMncStr();
+    method public java.lang.String getMobileNetworkOperator();
+    method public java.lang.CharSequence getOperatorAlphaLong();
+    method public java.lang.CharSequence getOperatorAlphaShort();
     method public int getPci();
     method public int getTac();
     method public void writeToParcel(android.os.Parcel, int);
@@ -39872,8 +39863,13 @@
     method public int describeContents();
     method public int getCid();
     method public int getLac();
-    method public int getMcc();
-    method public int getMnc();
+    method public deprecated int getMcc();
+    method public java.lang.String getMccStr();
+    method public deprecated int getMnc();
+    method public java.lang.String getMncStr();
+    method public java.lang.String getMobileNetworkOperator();
+    method public java.lang.CharSequence getOperatorAlphaLong();
+    method public java.lang.CharSequence getOperatorAlphaShort();
     method public int getPsc();
     method public int getUarfcn();
     method public void writeToParcel(android.os.Parcel, int);
@@ -40025,6 +40021,7 @@
     field public static final java.lang.String EXTRA_MBMS_DOWNLOAD_REQUEST = "android.telephony.extra.MBMS_DOWNLOAD_REQUEST";
     field public static final java.lang.String EXTRA_MBMS_DOWNLOAD_RESULT = "android.telephony.extra.MBMS_DOWNLOAD_RESULT";
     field public static final java.lang.String EXTRA_MBMS_FILE_INFO = "android.telephony.extra.MBMS_FILE_INFO";
+    field public static final java.lang.String MBMS_DOWNLOAD_SERVICE_OVERRIDE_METADATA = "mbms-download-service-override";
     field public static final int RESULT_CANCELLED = 2; // 0x2
     field public static final int RESULT_DOWNLOAD_FAILURE = 6; // 0x6
     field public static final int RESULT_EXPIRED = 3; // 0x3
@@ -40046,6 +40043,7 @@
     method public static android.telephony.MbmsStreamingSession create(android.content.Context, android.telephony.mbms.MbmsStreamingSessionCallback, android.os.Handler);
     method public void requestUpdateStreamingServices(java.util.List<java.lang.String>);
     method public android.telephony.mbms.StreamingService startStreaming(android.telephony.mbms.StreamingServiceInfo, android.telephony.mbms.StreamingServiceCallback, android.os.Handler);
+    field public static final java.lang.String MBMS_STREAMING_SERVICE_OVERRIDE_METADATA = "mbms-streaming-service-override";
   }
 
   public class NeighboringCellInfo implements android.os.Parcelable {
@@ -40723,6 +40721,7 @@
   }
 
   public final class FileServiceInfo extends android.telephony.mbms.ServiceInfo implements android.os.Parcelable {
+    ctor public FileServiceInfo(java.util.Map<java.util.Locale, java.lang.String>, java.lang.String, java.util.List<java.util.Locale>, java.lang.String, java.util.Date, java.util.Date, java.util.List<android.telephony.mbms.FileInfo>);
     method public int describeContents();
     method public java.util.List<android.telephony.mbms.FileInfo> getFiles();
     method public void writeToParcel(android.os.Parcel, int);
@@ -40821,6 +40820,7 @@
   }
 
   public final class StreamingServiceInfo extends android.telephony.mbms.ServiceInfo implements android.os.Parcelable {
+    ctor public StreamingServiceInfo(java.util.Map<java.util.Locale, java.lang.String>, java.lang.String, java.util.List<java.util.Locale>, java.lang.String, java.util.Date, java.util.Date);
     method public int describeContents();
     method public void writeToParcel(android.os.Parcel, int);
     field public static final android.os.Parcelable.Creator<android.telephony.mbms.StreamingServiceInfo> CREATOR;
@@ -40828,6 +40828,37 @@
 
 }
 
+package android.telephony.mbms.vendor {
+
+  public class MbmsDownloadServiceBase extends android.os.Binder {
+    ctor public MbmsDownloadServiceBase();
+    method public int cancelDownload(android.telephony.mbms.DownloadRequest) throws android.os.RemoteException;
+    method public void dispose(int) throws android.os.RemoteException;
+    method public int download(android.telephony.mbms.DownloadRequest) throws android.os.RemoteException;
+    method public int getDownloadStatus(android.telephony.mbms.DownloadRequest, android.telephony.mbms.FileInfo) throws android.os.RemoteException;
+    method public int initialize(int, android.telephony.mbms.MbmsDownloadSessionCallback) throws android.os.RemoteException;
+    method public java.util.List<android.telephony.mbms.DownloadRequest> listPendingDownloads(int) throws android.os.RemoteException;
+    method public void onAppCallbackDied(int, int);
+    method public int registerStateCallback(android.telephony.mbms.DownloadRequest, android.telephony.mbms.DownloadStateCallback) throws android.os.RemoteException;
+    method public int requestUpdateFileServices(int, java.util.List<java.lang.String>) throws android.os.RemoteException;
+    method public int resetDownloadKnowledge(android.telephony.mbms.DownloadRequest) throws android.os.RemoteException;
+    method public int setTempFileRootDirectory(int, java.lang.String) throws android.os.RemoteException;
+    method public int unregisterStateCallback(android.telephony.mbms.DownloadRequest, android.telephony.mbms.DownloadStateCallback) throws android.os.RemoteException;
+  }
+
+  public class MbmsStreamingServiceBase extends android.os.Binder {
+    ctor public MbmsStreamingServiceBase();
+    method public void dispose(int) throws android.os.RemoteException;
+    method public android.net.Uri getPlaybackUri(int, java.lang.String) throws android.os.RemoteException;
+    method public int initialize(android.telephony.mbms.MbmsStreamingSessionCallback, int) throws android.os.RemoteException;
+    method public void onAppCallbackDied(int, int);
+    method public int requestUpdateStreamingServices(int, java.util.List<java.lang.String>) throws android.os.RemoteException;
+    method public int startStreaming(int, java.lang.String, android.telephony.mbms.StreamingServiceCallback) throws android.os.RemoteException;
+    method public void stopStreaming(int, java.lang.String) throws android.os.RemoteException;
+  }
+
+}
+
 package android.test {
 
   public abstract deprecated class ActivityInstrumentationTestCase<T extends android.app.Activity> extends android.test.ActivityTestCase {
diff --git a/core/java/Android.bp b/core/java/Android.bp
new file mode 100644
index 0000000..42b0f6b
--- /dev/null
+++ b/core/java/Android.bp
@@ -0,0 +1,4 @@
+filegroup {
+    name: "IKeyAttestationApplicationIdProvider.aidl",
+    srcs: ["android/security/keymaster/IKeyAttestationApplicationIdProvider.aidl"],
+}
diff --git a/core/java/android/app/DexLoadReporter.java b/core/java/android/app/DexLoadReporter.java
index 5f61e07..d15dd6d 100644
--- a/core/java/android/app/DexLoadReporter.java
+++ b/core/java/android/app/DexLoadReporter.java
@@ -19,6 +19,7 @@
 import android.os.FileUtils;
 import android.os.RemoteException;
 import android.os.SystemProperties;
+import android.system.ErrnoException;
 import android.util.Slog;
 
 import com.android.internal.annotations.GuardedBy;
@@ -26,10 +27,11 @@
 import dalvik.system.BaseDexClassLoader;
 import dalvik.system.VMRuntime;
 
+import libcore.io.Libcore;
+
 import java.io.File;
 import java.io.IOException;
 import java.util.ArrayList;
-import java.util.Arrays;
 import java.util.HashSet;
 import java.util.List;
 import java.util.Set;
@@ -114,13 +116,18 @@
         registerSecondaryDexForProfiling(dexPathsForRegistration);
     }
 
-    private void notifyPackageManager(List<BaseDexClassLoader> ignored,
+    private void notifyPackageManager(List<BaseDexClassLoader> classLoadersChain,
             List<String> classPaths) {
+        // Get the class loader names for the binder call.
+        List<String> classLoadersNames = new ArrayList<>(classPaths.size());
+        for (BaseDexClassLoader bdc : classLoadersChain) {
+            classLoadersNames.add(bdc.getClass().getName());
+        }
         String packageName = ActivityThread.currentPackageName();
         try {
             // Notify only the paths of the first class loader for now.
             ActivityThread.getPackageManager().notifyDexLoad(
-                    packageName, Arrays.asList(classPaths.get(0).split(File.pathSeparator)),
+                    packageName, classLoadersNames, classPaths,
                     VMRuntime.getRuntime().vmInstructionSet());
         } catch (RemoteException re) {
             Slog.e(TAG, "Failed to notify PM about dex load for package " + packageName, re);
@@ -148,22 +155,50 @@
             // The dex path is not a secondary dex file. Nothing to do.
             return;
         }
-        File secondaryProfile = getSecondaryProfileFile(dexPath);
+
+        File realDexPath;
         try {
-            // Create the profile if not already there.
-            // Returns true if the file was created, false if the file already exists.
-            // or throws exceptions in case of errors.
+            // Secondary dex profiles are stored in the oat directory, next to the real dex file
+            // and have the same name with 'cur.prof' appended. We use the realpath because that
+            // is what installd is using when processing the dex file.
+            // NOTE: Keep in sync with installd.
+            realDexPath = new File(Libcore.os.realpath(dexPath));
+        } catch (ErrnoException ex) {
+            Slog.e(TAG, "Failed to get the real path of secondary dex " + dexPath
+                    + ":" + ex.getMessage());
+            // Do not continue with registration if we could not retrieve the real path.
+            return;
+        }
+
+        // NOTE: Keep this in sync with installd expectations.
+        File secondaryProfileDir = new File(realDexPath.getParent(), "oat");
+        File secondaryProfile = new File(secondaryProfileDir, realDexPath.getName() + ".cur.prof");
+
+        // Create the profile if not already there.
+        // Returns true if the file was created, false if the file already exists.
+        // or throws exceptions in case of errors.
+        if (!secondaryProfileDir.exists()) {
+            if (!secondaryProfileDir.mkdir()) {
+                Slog.e(TAG, "Could not create the profile directory: " + secondaryProfile);
+                // Do not continue with registration if we could not create the oat dir.
+                return;
+            }
+        }
+
+        try {
             boolean created = secondaryProfile.createNewFile();
             if (DEBUG && created) {
                 Slog.i(TAG, "Created profile for secondary dex: " + secondaryProfile);
             }
         } catch (IOException ex) {
-            Slog.e(TAG, "Failed to create profile for secondary dex " + secondaryProfile +
-                    ":" + ex.getMessage());
-            // Don't move forward with the registration if we failed to create the profile.
+            Slog.e(TAG, "Failed to create profile for secondary dex " + dexPath
+                    + ":" + ex.getMessage());
+            // Do not continue with registration if we could not create the profile files.
             return;
         }
 
+        // If we got here, the dex paths is a secondary dex and we were able to create the profile.
+        // Register the path to the runtime.
         VMRuntime.registerAppInfo(secondaryProfile.getPath(), new String[] { dexPath });
     }
 
@@ -177,11 +212,4 @@
         }
         return false;
     }
-
-    // Secondary dex profiles are stored next to the dex file and have the same
-    // name with '.prof' appended.
-    // NOTE: Keep in sync with installd.
-    private File getSecondaryProfileFile(String dexPath) {
-        return new File(dexPath + ".prof");
-    }
 }
diff --git a/core/java/android/app/timezone/RulesUpdaterContract.java b/core/java/android/app/timezone/RulesUpdaterContract.java
index 9c62f46..1f354af 100644
--- a/core/java/android/app/timezone/RulesUpdaterContract.java
+++ b/core/java/android/app/timezone/RulesUpdaterContract.java
@@ -83,8 +83,7 @@
         Intent intent = createUpdaterIntent(updaterAppPackageName);
         intent.putExtra(EXTRA_CHECK_TOKEN, checkTokenBytes);
         context.sendBroadcastAsUser(
-                intent,
-                UserHandle.of(UserHandle.myUserId()),
+                intent, UserHandle.SYSTEM,
                 RulesUpdaterContract.UPDATE_TIME_ZONE_RULES_PERMISSION);
     }
 }
diff --git a/core/java/android/app/usage/ExternalStorageStats.java b/core/java/android/app/usage/ExternalStorageStats.java
index d7e570f..f00e5c2 100644
--- a/core/java/android/app/usage/ExternalStorageStats.java
+++ b/core/java/android/app/usage/ExternalStorageStats.java
@@ -33,6 +33,7 @@
     /** {@hide} */ public long videoBytes;
     /** {@hide} */ public long imageBytes;
     /** {@hide} */ public long appBytes;
+    /** {@hide} */ public long obbBytes;
 
     /**
      * Return the total bytes used by all files in the shared/external storage
@@ -97,6 +98,11 @@
     }
 
     /** {@hide} */
+    public @BytesLong long getObbBytes() {
+        return obbBytes;
+    }
+
+    /** {@hide} */
     public ExternalStorageStats() {
     }
 
@@ -107,6 +113,7 @@
         this.videoBytes = in.readLong();
         this.imageBytes = in.readLong();
         this.appBytes = in.readLong();
+        this.obbBytes = in.readLong();
     }
 
     @Override
@@ -121,6 +128,7 @@
         dest.writeLong(videoBytes);
         dest.writeLong(imageBytes);
         dest.writeLong(appBytes);
+        dest.writeLong(obbBytes);
     }
 
     public static final Creator<ExternalStorageStats> CREATOR = new Creator<ExternalStorageStats>() {
diff --git a/core/java/android/bluetooth/BluetoothHidDevice.java b/core/java/android/bluetooth/BluetoothHidDevice.java
index 179f36d..e3d763a 100644
--- a/core/java/android/bluetooth/BluetoothHidDevice.java
+++ b/core/java/android/bluetooth/BluetoothHidDevice.java
@@ -31,7 +31,14 @@
 import java.util.List;
 
 /**
- * @hide
+ * Provides the public APIs to control the Bluetooth HID Device
+ * profile.
+ *
+ * BluetoothHidDevice is a proxy object for controlling the Bluetooth HID
+ * Device Service via IPC. Use {@link BluetoothAdapter#getProfileProxy} to get
+ * the BluetoothHidDevice proxy object.
+ *
+ * {@hide}
  */
 public final class BluetoothHidDevice implements BluetoothProfile {
 
@@ -62,7 +69,9 @@
     /**
      * Constants representing device subclass.
      *
-     * @see #registerApp(String, String, String, byte, byte[], BluetoothHidDeviceCallback)
+     * @see #registerApp
+     * (BluetoothHidDeviceAppQosSettings, BluetoothHidDeviceAppQosSettings,
+     * BluetoothHidDeviceAppQosSettings, BluetoothHidDeviceCallback)
      */
     public static final byte SUBCLASS1_NONE = (byte) 0x00;
     public static final byte SUBCLASS1_KEYBOARD = (byte) 0x40;
@@ -80,9 +89,9 @@
     /**
      * Constants representing report types.
      *
-     * @see BluetoothHidDeviceCallback#onGetReport(byte, byte, int)
-     * @see BluetoothHidDeviceCallback#onSetReport(byte, byte, byte[])
-     * @see BluetoothHidDeviceCallback#onIntrData(byte, byte[])
+     * @see BluetoothHidDeviceCallback#onGetReport(BluetoothDevice, byte, byte, int)
+     * @see BluetoothHidDeviceCallback#onSetReport(BluetoothDevice, byte, byte, byte[])
+     * @see BluetoothHidDeviceCallback#onIntrData(BluetoothDevice, byte, byte[])
      */
     public static final byte REPORT_TYPE_INPUT = (byte) 1;
     public static final byte REPORT_TYPE_OUTPUT = (byte) 2;
@@ -91,7 +100,7 @@
     /**
      * Constants representing error response for Set Report.
      *
-     * @see BluetoothHidDeviceCallback#onSetReport(byte, byte, byte[])
+     * @see BluetoothHidDeviceCallback#onSetReport(BluetoothDevice, byte, byte, byte[])
      */
     public static final byte ERROR_RSP_SUCCESS = (byte) 0;
     public static final byte ERROR_RSP_NOT_READY = (byte) 1;
@@ -104,7 +113,7 @@
      * Constants representing protocol mode used set by host. Default is always
      * {@link #PROTOCOL_REPORT_MODE} unless notified otherwise.
      *
-     * @see BluetoothHidDeviceCallback#onSetProtocol(byte)
+     * @see BluetoothHidDeviceCallback#onSetProtocol(BluetoothDevice, byte)
      */
     public static final byte PROTOCOL_BOOT_MODE = (byte) 0;
     public static final byte PROTOCOL_REPORT_MODE = (byte) 1;
@@ -169,18 +178,7 @@
                 public void onBluetoothStateChange(boolean up) {
                     Log.d(TAG, "onBluetoothStateChange: up=" + up);
                     synchronized (mConnection) {
-                        if (!up) {
-                            Log.d(TAG, "Unbinding service...");
-                            if (mService != null) {
-                                mService = null;
-                                try {
-                                    mContext.unbindService(mConnection);
-                                } catch (IllegalArgumentException e) {
-                                    Log.e(TAG, "onBluetoothStateChange: could not unbind service:",
-                                            e);
-                                }
-                            }
-                        } else {
+                        if (up) {
                             try {
                                 if (mService == null) {
                                     Log.d(TAG, "Binding HID Device service...");
@@ -189,14 +187,15 @@
                             } catch (IllegalStateException e) {
                                 Log.e(TAG,
                                         "onBluetoothStateChange: could not bind to HID Dev "
-                                                + "service: ",
-                                        e);
+                                                + "service: ", e);
                             } catch (SecurityException e) {
                                 Log.e(TAG,
                                         "onBluetoothStateChange: could not bind to HID Dev "
-                                                + "service: ",
-                                        e);
+                                                + "service: ", e);
                             }
+                        } else {
+                            Log.d(TAG, "Unbinding service...");
+                            doUnbind();
                         }
                     }
                 }
@@ -252,6 +251,18 @@
         return true;
     }
 
+    void doUnbind() {
+        Log.d(TAG, "Unbinding HidDevService");
+        if (mService != null) {
+            mService = null;
+            try {
+                mContext.unbindService(mConnection);
+            } catch (IllegalArgumentException e) {
+                Log.e(TAG, "Unable to unbind HidDevService", e);
+            }
+        }
+    }
+
     void close() {
         Log.v(TAG, "close()");
 
@@ -265,16 +276,8 @@
         }
 
         synchronized (mConnection) {
-            if (mService != null) {
-                mService = null;
-                try {
-                    mContext.unbindService(mConnection);
-                } catch (IllegalArgumentException e) {
-                    Log.e(TAG, "close: could not unbind HID Dev service: ", e);
-                }
-            }
+            doUnbind();
         }
-
         mServiceListener = null;
     }
 
@@ -388,7 +391,9 @@
     /**
      * Unregisters application. Active connection will be disconnected and no
      * new connections will be allowed until registered again using
-     * {@link #registerApp(String, String, String, byte, byte[], BluetoothHidDeviceCallback)}
+     * {@link #registerApp
+     * (BluetoothHidDeviceAppQosSettings, BluetoothHidDeviceAppQosSettings,
+     * BluetoothHidDeviceAppQosSettings, BluetoothHidDeviceCallback)}
      *
      * @param config {@link BluetoothHidDeviceAppConfiguration} object as obtained from {@link
      * BluetoothHidDeviceCallback#onAppStatusChanged(BluetoothDevice,
diff --git a/core/java/android/bluetooth/BluetoothHidDeviceAppConfiguration.java b/core/java/android/bluetooth/BluetoothHidDeviceAppConfiguration.java
index 2731935..d1efa2d 100644
--- a/core/java/android/bluetooth/BluetoothHidDeviceAppConfiguration.java
+++ b/core/java/android/bluetooth/BluetoothHidDeviceAppConfiguration.java
@@ -21,7 +21,16 @@
 
 import java.util.Random;
 
-/** @hide */
+/**
+ * Represents the app configuration for a Bluetooth HID Device application.
+ *
+ * The app needs a BluetoothHidDeviceAppConfiguration token to unregister
+ * the Bluetooth HID Device service.
+ *
+ * {@see BluetoothHidDevice}
+ *
+ * {@hide}
+ */
 public final class BluetoothHidDeviceAppConfiguration implements Parcelable {
     private final long mHash;
 
diff --git a/core/java/android/bluetooth/BluetoothHidDeviceAppQosSettings.java b/core/java/android/bluetooth/BluetoothHidDeviceAppQosSettings.java
index 1f80ed7..ccc3ef4 100644
--- a/core/java/android/bluetooth/BluetoothHidDeviceAppQosSettings.java
+++ b/core/java/android/bluetooth/BluetoothHidDeviceAppQosSettings.java
@@ -19,7 +19,17 @@
 import android.os.Parcel;
 import android.os.Parcelable;
 
-/** @hide */
+/**
+ * Represents the Quality of Service (QoS) settings for a Bluetooth HID Device
+ * application.
+ *
+ * The BluetoothHidDevice framework will update the L2CAP QoS settings for the
+ * app during registration.
+ *
+ * {@see BluetoothHidDevice}
+ *
+ * {@hide}
+ */
 public final class BluetoothHidDeviceAppQosSettings implements Parcelable {
 
     public final int serviceType;
@@ -36,8 +46,7 @@
     public static final int MAX = (int) 0xffffffff;
 
     public BluetoothHidDeviceAppQosSettings(int serviceType, int tokenRate, int tokenBucketSize,
-            int peakBandwidth,
-            int latency, int delayVariation) {
+            int peakBandwidth, int latency, int delayVariation) {
         this.serviceType = serviceType;
         this.tokenRate = tokenRate;
         this.tokenBucketSize = tokenBucketSize;
@@ -66,10 +75,13 @@
                 @Override
                 public BluetoothHidDeviceAppQosSettings createFromParcel(Parcel in) {
 
-                    return new BluetoothHidDeviceAppQosSettings(in.readInt(), in.readInt(),
+                    return new BluetoothHidDeviceAppQosSettings(
                             in.readInt(),
                             in.readInt(),
-                            in.readInt(), in.readInt());
+                            in.readInt(),
+                            in.readInt(),
+                            in.readInt(),
+                            in.readInt());
                 }
 
                 @Override
@@ -90,7 +102,7 @@
 
     /** @return an int array representation of this instance */
     public int[] toArray() {
-        return new int[]{
+        return new int[] {
                 serviceType, tokenRate, tokenBucketSize, peakBandwidth, latency, delayVariation
         };
     }
diff --git a/core/java/android/bluetooth/BluetoothHidDeviceAppSdpSettings.java b/core/java/android/bluetooth/BluetoothHidDeviceAppSdpSettings.java
index d21d506..f01c493 100644
--- a/core/java/android/bluetooth/BluetoothHidDeviceAppSdpSettings.java
+++ b/core/java/android/bluetooth/BluetoothHidDeviceAppSdpSettings.java
@@ -19,7 +19,18 @@
 import android.os.Parcel;
 import android.os.Parcelable;
 
-/** @hide */
+/**
+ * Represents the Service Discovery Protocol (SDP) settings for a Bluetooth
+ * HID Device application.
+ *
+ * The BluetoothHidDevice framework adds the SDP record during app
+ * registration, so that the Android device can be discovered as a Bluetooth
+ * HID Device.
+ *
+ * {@see BluetoothHidDevice}
+ *
+ * {@hide}
+ */
 public final class BluetoothHidDeviceAppSdpSettings implements Parcelable {
 
     public final String name;
@@ -57,8 +68,12 @@
                 @Override
                 public BluetoothHidDeviceAppSdpSettings createFromParcel(Parcel in) {
 
-                    return new BluetoothHidDeviceAppSdpSettings(in.readString(), in.readString(),
-                            in.readString(), in.readByte(), in.createByteArray());
+                    return new BluetoothHidDeviceAppSdpSettings(
+                            in.readString(),
+                            in.readString(),
+                            in.readString(),
+                            in.readByte(),
+                            in.createByteArray());
                 }
 
                 @Override
diff --git a/core/java/android/bluetooth/BluetoothHidDeviceCallback.java b/core/java/android/bluetooth/BluetoothHidDeviceCallback.java
index 3d407a6..5ccda0d 100644
--- a/core/java/android/bluetooth/BluetoothHidDeviceCallback.java
+++ b/core/java/android/bluetooth/BluetoothHidDeviceCallback.java
@@ -18,16 +18,24 @@
 
 import android.util.Log;
 
-/** @hide */
+/**
+ * The template class that applications use to call callback functions on
+ * events from the HID host. Callback functions are wrapped in this class and
+ * registered to the Android system during app registration.
+ *
+ * {@see BluetoothHidDevice}
+ *
+ * {@hide}
+ */
 public abstract class BluetoothHidDeviceCallback {
 
-    private static final String TAG = BluetoothHidDeviceCallback.class.getSimpleName();
+    private static final String TAG = "BluetoothHidDevCallback";
 
     /**
      * Callback called when application registration state changes. Usually it's
      * called due to either
-     * {@link BluetoothHidDevice#registerApp(String, String, String, byte, byte[],
-     * BluetoothHidDeviceCallback)}
+     * {@link BluetoothHidDevice#registerApp
+     * (String, String, String, byte, byte[], BluetoothHidDeviceCallback)}
      * or
      * {@link BluetoothHidDevice#unregisterApp(BluetoothHidDeviceAppConfiguration)}
      * , but can be also unsolicited in case e.g. Bluetooth was turned off in
@@ -79,7 +87,7 @@
     /**
      * Callback called when SET_REPORT is received from remote host. In case
      * received data are invalid, application shall respond with
-     * {@link BluetoothHidDevice#reportError(BluetoothDevice)}.
+     * {@link BluetoothHidDevice#reportError(BluetoothDevice, byte)}.
      *
      * @param type Report Type.
      * @param id Report Id.
diff --git a/core/java/android/content/pm/IPackageManager.aidl b/core/java/android/content/pm/IPackageManager.aidl
index 4b44a17..c9afd6b 100644
--- a/core/java/android/content/pm/IPackageManager.aidl
+++ b/core/java/android/content/pm/IPackageManager.aidl
@@ -469,11 +469,19 @@
      * Notify the package manager that a list of dex files have been loaded.
      *
      * @param loadingPackageName the name of the package who performs the load
-     * @param dexPats the list of the dex files paths that have been loaded
+     * @param classLoadersNames the names of the class loaders present in the loading chain. The
+     *    list encodes the class loader chain in the natural order. The first class loader has
+     *    the second one as its parent and so on. The dex files present in the class path of the
+     *    first class loader will be recorded in the usage file.
+     * @param classPaths the class paths corresponding to the class loaders names from
+     *     {@param classLoadersNames}. The the first element corresponds to the first class loader
+     *     and so on. A classpath is represented as a list of dex files separated by
+     *     {@code File.pathSeparator}.
+     *     The dex files found in the first class path will be recorded in the usage file.
      * @param loaderIsa the ISA of the loader process
      */
-    oneway void notifyDexLoad(String loadingPackageName, in List<String> dexPaths,
-            String loaderIsa);
+    oneway void notifyDexLoad(String loadingPackageName, in List<String> classLoadersNames,
+            in List<String> classPaths, String loaderIsa);
 
     /**
      * Register an application dex module with the package manager.
@@ -508,21 +516,13 @@
              in boolean isSharedModule, IDexModuleRegisterCallback callback);
 
     /**
-     * Ask the package manager to perform a dex-opt for the given reason. The package
-     * manager will map the reason to a compiler filter according to the current system
-     * configuration.
-     */
-    boolean performDexOpt(String packageName, boolean checkProfiles,
-            int compileReason, boolean force, boolean bootComplete);
-
-    /**
      * Ask the package manager to perform a dex-opt with the given compiler filter.
      *
      * Note: exposed only for the shell command to allow moving packages explicitly to a
      *       definite state.
      */
     boolean performDexOptMode(String packageName, boolean checkProfiles,
-            String targetCompilerFilter, boolean force, boolean bootComplete);
+            String targetCompilerFilter, boolean force, boolean bootComplete, String splitName);
 
     /**
      * Ask the package manager to perform a dex-opt with the given compiler filter on the
diff --git a/core/java/android/net/Network.java b/core/java/android/net/Network.java
index 3c868c3..903b602 100644
--- a/core/java/android/net/Network.java
+++ b/core/java/android/net/Network.java
@@ -16,14 +16,14 @@
 
 package android.net;
 
-import android.os.Parcelable;
 import android.os.Parcel;
+import android.os.Parcelable;
 import android.system.ErrnoException;
 import android.system.Os;
 import android.system.OsConstants;
 
-import libcore.net.http.Dns;
-import libcore.net.http.HttpURLConnectionFactory;
+import com.android.okhttp.internalandroidapi.Dns;
+import com.android.okhttp.internalandroidapi.HttpURLConnectionFactory;
 
 import java.io.FileDescriptor;
 import java.io.IOException;
@@ -34,11 +34,12 @@
 import java.net.Socket;
 import java.net.SocketAddress;
 import java.net.SocketException;
-import java.net.UnknownHostException;
 import java.net.URL;
 import java.net.URLConnection;
+import java.net.UnknownHostException;
 import java.util.Arrays;
 import java.util.concurrent.TimeUnit;
+
 import javax.net.SocketFactory;
 
 /**
diff --git a/core/java/android/net/NetworkCapabilities.java b/core/java/android/net/NetworkCapabilities.java
index 4bb8844..db12dd9 100644
--- a/core/java/android/net/NetworkCapabilities.java
+++ b/core/java/android/net/NetworkCapabilities.java
@@ -16,6 +16,7 @@
 
 package android.net;
 
+import android.annotation.IntDef;
 import android.os.Parcel;
 import android.os.Parcelable;
 
@@ -23,6 +24,8 @@
 import com.android.internal.util.BitUtils;
 import com.android.internal.util.Preconditions;
 
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
 import java.util.Objects;
 import java.util.StringJoiner;
 
@@ -77,6 +80,31 @@
      */
     private long mNetworkCapabilities;
 
+    /** @hide */
+    @Retention(RetentionPolicy.SOURCE)
+    @IntDef(prefix = { "NET_CAPABILITY_" }, value = {
+            NET_CAPABILITY_MMS,
+            NET_CAPABILITY_SUPL,
+            NET_CAPABILITY_DUN,
+            NET_CAPABILITY_FOTA,
+            NET_CAPABILITY_IMS,
+            NET_CAPABILITY_CBS,
+            NET_CAPABILITY_WIFI_P2P,
+            NET_CAPABILITY_IA,
+            NET_CAPABILITY_RCS,
+            NET_CAPABILITY_XCAP,
+            NET_CAPABILITY_EIMS,
+            NET_CAPABILITY_NOT_METERED,
+            NET_CAPABILITY_INTERNET,
+            NET_CAPABILITY_NOT_RESTRICTED,
+            NET_CAPABILITY_TRUSTED,
+            NET_CAPABILITY_NOT_VPN,
+            NET_CAPABILITY_VALIDATED,
+            NET_CAPABILITY_CAPTIVE_PORTAL,
+            NET_CAPABILITY_FOREGROUND,
+    })
+    public @interface NetCapability { }
+
     /**
      * Indicates this is a network that has the ability to reach the
      * carrier's MMSC for sending and receiving MMS messages.
@@ -260,11 +288,11 @@
      * Multiple capabilities may be applied sequentially.  Note that when searching
      * for a network to satisfy a request, all capabilities requested must be satisfied.
      *
-     * @param capability the {@code NetworkCapabilities.NET_CAPABILITY_*} to be added.
+     * @param capability the capability to be added.
      * @return This NetworkCapabilities instance, to facilitate chaining.
      * @hide
      */
-    public NetworkCapabilities addCapability(int capability) {
+    public NetworkCapabilities addCapability(@NetCapability int capability) {
         if (capability < MIN_NET_CAPABILITY || capability > MAX_NET_CAPABILITY) {
             throw new IllegalArgumentException("NetworkCapability out of range");
         }
@@ -275,11 +303,11 @@
     /**
      * Removes (if found) the given capability from this {@code NetworkCapability} instance.
      *
-     * @param capability the {@code NetworkCapabilities.NET_CAPABILTIY_*} to be removed.
+     * @param capability the capability to be removed.
      * @return This NetworkCapabilities instance, to facilitate chaining.
      * @hide
      */
-    public NetworkCapabilities removeCapability(int capability) {
+    public NetworkCapabilities removeCapability(@NetCapability int capability) {
         if (capability < MIN_NET_CAPABILITY || capability > MAX_NET_CAPABILITY) {
             throw new IllegalArgumentException("NetworkCapability out of range");
         }
@@ -290,21 +318,20 @@
     /**
      * Gets all the capabilities set on this {@code NetworkCapability} instance.
      *
-     * @return an array of {@code NetworkCapabilities.NET_CAPABILITY_*} values
-     *         for this instance.
+     * @return an array of capability values for this instance.
      * @hide
      */
-    public int[] getCapabilities() {
+    public @NetCapability int[] getCapabilities() {
         return BitUtils.unpackBits(mNetworkCapabilities);
     }
 
     /**
      * Tests for the presence of a capabilitity on this instance.
      *
-     * @param capability the {@code NetworkCapabilities.NET_CAPABILITY_*} to be tested for.
+     * @param capability the capabilities to be tested for.
      * @return {@code true} if set on this instance.
      */
-    public boolean hasCapability(int capability) {
+    public boolean hasCapability(@NetCapability int capability) {
         if (capability < MIN_NET_CAPABILITY || capability > MAX_NET_CAPABILITY) {
             return false;
         }
@@ -385,6 +412,19 @@
      */
     private long mTransportTypes;
 
+    /** @hide */
+    @Retention(RetentionPolicy.SOURCE)
+    @IntDef(prefix = { "TRANSPORT_" }, value = {
+            TRANSPORT_CELLULAR,
+            TRANSPORT_WIFI,
+            TRANSPORT_BLUETOOTH,
+            TRANSPORT_ETHERNET,
+            TRANSPORT_VPN,
+            TRANSPORT_WIFI_AWARE,
+            TRANSPORT_LOWPAN,
+    })
+    public @interface Transport { }
+
     /**
      * Indicates this network uses a Cellular transport.
      */
@@ -426,7 +466,7 @@
     public static final int MAX_TRANSPORT = TRANSPORT_LOWPAN;
 
     /** @hide */
-    public static boolean isValidTransport(int transportType) {
+    public static boolean isValidTransport(@Transport int transportType) {
         return (MIN_TRANSPORT <= transportType) && (transportType <= MAX_TRANSPORT);
     }
 
@@ -449,11 +489,11 @@
      * to be selected.  This is logically different than
      * {@code NetworkCapabilities.NET_CAPABILITY_*} listed above.
      *
-     * @param transportType the {@code NetworkCapabilities.TRANSPORT_*} to be added.
+     * @param transportType the transport type to be added.
      * @return This NetworkCapabilities instance, to facilitate chaining.
      * @hide
      */
-    public NetworkCapabilities addTransportType(int transportType) {
+    public NetworkCapabilities addTransportType(@Transport int transportType) {
         checkValidTransportType(transportType);
         mTransportTypes |= 1 << transportType;
         setNetworkSpecifier(mNetworkSpecifier); // used for exception checking
@@ -463,11 +503,11 @@
     /**
      * Removes (if found) the given transport from this {@code NetworkCapability} instance.
      *
-     * @param transportType the {@code NetworkCapabilities.TRANSPORT_*} to be removed.
+     * @param transportType the transport type to be removed.
      * @return This NetworkCapabilities instance, to facilitate chaining.
      * @hide
      */
-    public NetworkCapabilities removeTransportType(int transportType) {
+    public NetworkCapabilities removeTransportType(@Transport int transportType) {
         checkValidTransportType(transportType);
         mTransportTypes &= ~(1 << transportType);
         setNetworkSpecifier(mNetworkSpecifier); // used for exception checking
@@ -477,21 +517,20 @@
     /**
      * Gets all the transports set on this {@code NetworkCapability} instance.
      *
-     * @return an array of {@code NetworkCapabilities.TRANSPORT_*} values
-     *         for this instance.
+     * @return an array of transport type values for this instance.
      * @hide
      */
-    public int[] getTransportTypes() {
+    public @Transport int[] getTransportTypes() {
         return BitUtils.unpackBits(mTransportTypes);
     }
 
     /**
      * Tests for the presence of a transport on this instance.
      *
-     * @param transportType the {@code NetworkCapabilities.TRANSPORT_*} to be tested for.
+     * @param transportType the transport type to be tested for.
      * @return {@code true} if set on this instance.
      */
-    public boolean hasTransport(int transportType) {
+    public boolean hasTransport(@Transport int transportType) {
         return isValidTransport(transportType) && ((mTransportTypes & (1 << transportType)) != 0);
     }
 
@@ -896,7 +935,7 @@
     /**
      * @hide
      */
-    public static String capabilityNamesOf(int[] capabilities) {
+    public static String capabilityNamesOf(@NetCapability int[] capabilities) {
         StringJoiner joiner = new StringJoiner("|");
         if (capabilities != null) {
             for (int c : capabilities) {
@@ -909,7 +948,7 @@
     /**
      * @hide
      */
-    public static String capabilityNameOf(int capability) {
+    public static String capabilityNameOf(@NetCapability int capability) {
         switch (capability) {
             case NET_CAPABILITY_MMS:            return "MMS";
             case NET_CAPABILITY_SUPL:           return "SUPL";
@@ -937,7 +976,7 @@
     /**
      * @hide
      */
-    public static String transportNamesOf(int[] types) {
+    public static String transportNamesOf(@Transport int[] types) {
         StringJoiner joiner = new StringJoiner("|");
         if (types != null) {
             for (int t : types) {
@@ -950,14 +989,14 @@
     /**
      * @hide
      */
-    public static String transportNameOf(int transport) {
+    public static String transportNameOf(@Transport int transport) {
         if (!isValidTransport(transport)) {
             return "UNKNOWN";
         }
         return TRANSPORT_NAMES[transport];
     }
 
-    private static void checkValidTransportType(int transport) {
+    private static void checkValidTransportType(@Transport int transport) {
         Preconditions.checkArgument(
                 isValidTransport(transport), "Invalid TransportType " + transport);
     }
diff --git a/core/java/android/net/NetworkRequest.java b/core/java/android/net/NetworkRequest.java
index 95a8bb4..25b1705 100644
--- a/core/java/android/net/NetworkRequest.java
+++ b/core/java/android/net/NetworkRequest.java
@@ -155,14 +155,13 @@
          * Add the given capability requirement to this builder.  These represent
          * the requested network's required capabilities.  Note that when searching
          * for a network to satisfy a request, all capabilities requested must be
-         * satisfied.  See {@link NetworkCapabilities} for {@code NET_CAPABILITY_*}
-         * definitions.
+         * satisfied.
          *
-         * @param capability The {@code NetworkCapabilities.NET_CAPABILITY_*} to add.
+         * @param capability The capability to add.
          * @return The builder to facilitate chaining
          *         {@code builder.addCapability(...).addCapability();}.
          */
-        public Builder addCapability(int capability) {
+        public Builder addCapability(@NetworkCapabilities.NetCapability int capability) {
             mNetworkCapabilities.addCapability(capability);
             return this;
         }
@@ -170,10 +169,10 @@
         /**
          * Removes (if found) the given capability from this builder instance.
          *
-         * @param capability The {@code NetworkCapabilities.NET_CAPABILITY_*} to remove.
+         * @param capability The capability to remove.
          * @return The builder to facilitate chaining.
          */
-        public Builder removeCapability(int capability) {
+        public Builder removeCapability(@NetworkCapabilities.NetCapability int capability) {
             mNetworkCapabilities.removeCapability(capability);
             return this;
         }
@@ -208,13 +207,12 @@
          * Adds the given transport requirement to this builder.  These represent
          * the set of allowed transports for the request.  Only networks using one
          * of these transports will satisfy the request.  If no particular transports
-         * are required, none should be specified here.  See {@link NetworkCapabilities}
-         * for {@code TRANSPORT_*} definitions.
+         * are required, none should be specified here.
          *
-         * @param transportType The {@code NetworkCapabilities.TRANSPORT_*} to add.
+         * @param transportType The transport type to add.
          * @return The builder to facilitate chaining.
          */
-        public Builder addTransportType(int transportType) {
+        public Builder addTransportType(@NetworkCapabilities.Transport int transportType) {
             mNetworkCapabilities.addTransportType(transportType);
             return this;
         }
@@ -222,10 +220,10 @@
         /**
          * Removes (if found) the given transport from this builder instance.
          *
-         * @param transportType The {@code NetworkCapabilities.TRANSPORT_*} to remove.
+         * @param transportType The transport type to remove.
          * @return The builder to facilitate chaining.
          */
-        public Builder removeTransportType(int transportType) {
+        public Builder removeTransportType(@NetworkCapabilities.Transport int transportType) {
             mNetworkCapabilities.removeTransportType(transportType);
             return this;
         }
diff --git a/core/java/android/net/OWNERS b/core/java/android/net/OWNERS
index 0f1e259..d1ce60e 100644
--- a/core/java/android/net/OWNERS
+++ b/core/java/android/net/OWNERS
@@ -1,6 +1,6 @@
 ek@google.com
 hugobenichi@google.com
-jsharkey@google.com
+jsharkey@android.com
 lorenzo@google.com
 satk@google.com
 silberst@google.com
diff --git a/core/java/android/net/metrics/DefaultNetworkEvent.java b/core/java/android/net/metrics/DefaultNetworkEvent.java
index 28cf42f..eb61c153 100644
--- a/core/java/android/net/metrics/DefaultNetworkEvent.java
+++ b/core/java/android/net/metrics/DefaultNetworkEvent.java
@@ -16,73 +16,43 @@
 
 package android.net.metrics;
 
+import static android.net.ConnectivityManager.NETID_UNSET;
+
 import android.net.NetworkCapabilities;
-import android.os.Parcel;
-import android.os.Parcelable;
 
 /**
  * An event recorded by ConnectivityService when there is a change in the default network.
  * {@hide}
  */
-public final class DefaultNetworkEvent implements Parcelable {
+public class DefaultNetworkEvent {
+
     // The ID of the network that has become the new default or NETID_UNSET if none.
-    public final int netId;
+    public int netId = NETID_UNSET;
     // The list of transport types of the new default network, for example TRANSPORT_WIFI, as
     // defined in NetworkCapabilities.java.
-    public final int[] transportTypes;
+    public int[] transportTypes = new int[0];
     // The ID of the network that was the default before or NETID_UNSET if none.
-    public final int prevNetId;
+    public int prevNetId = NETID_UNSET;
     // Whether the previous network had IPv4/IPv6 connectivity.
-    public final boolean prevIPv4;
-    public final boolean prevIPv6;
-
-    public DefaultNetworkEvent(int netId, int[] transportTypes,
-                int prevNetId, boolean prevIPv4, boolean prevIPv6) {
-        this.netId = netId;
-        this.transportTypes = transportTypes;
-        this.prevNetId = prevNetId;
-        this.prevIPv4 = prevIPv4;
-        this.prevIPv6 = prevIPv6;
-    }
-
-    private DefaultNetworkEvent(Parcel in) {
-        this.netId = in.readInt();
-        this.transportTypes = in.createIntArray();
-        this.prevNetId = in.readInt();
-        this.prevIPv4 = (in.readByte() > 0);
-        this.prevIPv6 = (in.readByte() > 0);
-    }
-
-    @Override
-    public void writeToParcel(Parcel out, int flags) {
-        out.writeInt(netId);
-        out.writeIntArray(transportTypes);
-        out.writeInt(prevNetId);
-        out.writeByte(prevIPv4 ? (byte) 1 : (byte) 0);
-        out.writeByte(prevIPv6 ? (byte) 1 : (byte) 0);
-    }
-
-    @Override
-    public int describeContents() {
-        return 0;
-    }
+    public boolean prevIPv4;
+    public boolean prevIPv6;
 
     @Override
     public String toString() {
-      String prevNetwork = String.valueOf(prevNetId);
-      String newNetwork = String.valueOf(netId);
-      if (prevNetId != 0) {
-          prevNetwork += ":" + ipSupport();
-      }
-      if (netId != 0) {
-          newNetwork += ":" + NetworkCapabilities.transportNamesOf(transportTypes);
-      }
-      return String.format("DefaultNetworkEvent(%s -> %s)", prevNetwork, newNetwork);
+        String prevNetwork = String.valueOf(prevNetId);
+        String newNetwork = String.valueOf(netId);
+        if (prevNetId != 0) {
+            prevNetwork += ":" + ipSupport();
+        }
+        if (netId != 0) {
+            newNetwork += ":" + NetworkCapabilities.transportNamesOf(transportTypes);
+        }
+        return String.format("DefaultNetworkEvent(%s -> %s)", prevNetwork, newNetwork);
     }
 
     private String ipSupport() {
         if (prevIPv4 && prevIPv6) {
-            return "DUAL";
+            return "IPv4v6";
         }
         if (prevIPv6) {
             return "IPv6";
@@ -92,15 +62,4 @@
         }
         return "NONE";
     }
-
-    public static final Parcelable.Creator<DefaultNetworkEvent> CREATOR
-        = new Parcelable.Creator<DefaultNetworkEvent>() {
-        public DefaultNetworkEvent createFromParcel(Parcel in) {
-            return new DefaultNetworkEvent(in);
-        }
-
-        public DefaultNetworkEvent[] newArray(int size) {
-            return new DefaultNetworkEvent[size];
-        }
-    };
 }
diff --git a/core/java/android/os/Binder.java b/core/java/android/os/Binder.java
index a83c7b3..3c1d83c 100644
--- a/core/java/android/os/Binder.java
+++ b/core/java/android/os/Binder.java
@@ -16,6 +16,8 @@
 
 package android.os;
 
+import android.annotation.NonNull;
+import android.annotation.Nullable;
 import android.util.ExceptionUtils;
 import android.util.Log;
 import android.util.Slog;
@@ -25,12 +27,14 @@
 import com.android.internal.util.FunctionalUtils.ThrowingSupplier;
 
 import libcore.io.IoUtils;
+import libcore.util.NativeAllocationRegistry;
 
 import java.io.FileDescriptor;
 import java.io.FileOutputStream;
 import java.io.PrintWriter;
 import java.lang.ref.WeakReference;
 import java.lang.reflect.Modifier;
+import java.util.ArrayList;
 
 /**
  * Base class for a remotable object, the core part of a lightweight
@@ -88,6 +92,20 @@
      */
     private static volatile TransactionTracker sTransactionTracker = null;
 
+    /**
+     * Guestimate of native memory associated with a Binder.
+     */
+    private static final int NATIVE_ALLOCATION_SIZE = 500;
+
+    private static native long getNativeFinalizer();
+
+    // Use a Holder to allow static initialization of Binder in the boot image, and
+    // possibly to avoid some initialization ordering issues.
+    private static class NoImagePreloadHolder {
+        public static final NativeAllocationRegistry sRegistry = new NativeAllocationRegistry(
+                Binder.class.getClassLoader(), getNativeFinalizer(), NATIVE_ALLOCATION_SIZE);
+    }
+
     // Transaction tracking code.
 
     /**
@@ -186,8 +204,11 @@
         }
     }
 
-    /* mObject is used by native code, do not remove or rename */
-    private long mObject;
+    /**
+     * Raw native pointer to JavaBBinderHolder object. Owned by this Java object. Not null.
+     */
+    private final long mObject;
+
     private IInterface mOwner;
     private String mDescriptor;
 
@@ -217,7 +238,7 @@
      * with their own uid.  If the current thread is not currently executing an
      * incoming transaction, then its own UserHandle is returned.
      */
-    public static final UserHandle getCallingUserHandle() {
+    public static final @NonNull UserHandle getCallingUserHandle() {
         return UserHandle.of(UserHandle.getUserId(getCallingUid()));
     }
 
@@ -260,7 +281,7 @@
      *
      * @hide
      */
-    public static final void withCleanCallingIdentity(ThrowingRunnable action) {
+    public static final void withCleanCallingIdentity(@NonNull ThrowingRunnable action) {
         long callingIdentity = clearCallingIdentity();
         Throwable throwableToPropagate = null;
         try {
@@ -284,7 +305,7 @@
      *
      * @hide
      */
-    public static final <T> T withCleanCallingIdentity(ThrowingSupplier<T> action) {
+    public static final <T> T withCleanCallingIdentity(@NonNull ThrowingSupplier<T> action) {
         long callingIdentity = clearCallingIdentity();
         Throwable throwableToPropagate = null;
         try {
@@ -358,7 +379,8 @@
      * Default constructor initializes the object.
      */
     public Binder() {
-        init();
+        mObject = getNativeBBinderHolder();
+        NoImagePreloadHolder.sRegistry.registerNativeAllocation(this, mObject);
 
         if (FIND_POTENTIAL_LEAKS) {
             final Class<? extends Binder> klass = getClass();
@@ -376,7 +398,7 @@
      * to return the given owner IInterface when the corresponding
      * descriptor is requested.
      */
-    public void attachInterface(IInterface owner, String descriptor) {
+    public void attachInterface(@Nullable IInterface owner, @Nullable String descriptor) {
         mOwner = owner;
         mDescriptor = descriptor;
     }
@@ -384,7 +406,7 @@
     /**
      * Default implementation returns an empty interface name.
      */
-    public String getInterfaceDescriptor() {
+    public @Nullable String getInterfaceDescriptor() {
         return mDescriptor;
     }
 
@@ -411,7 +433,7 @@
      * associated IInterface if it matches the requested
      * descriptor.
      */
-    public IInterface queryLocalInterface(String descriptor) {
+    public @Nullable IInterface queryLocalInterface(@NonNull String descriptor) {
         if (mDescriptor.equals(descriptor)) {
             return mOwner;
         }
@@ -437,8 +459,20 @@
      * to override this to do the appropriate unmarshalling of transactions.
      *
      * <p>If you want to call this, call transact().
+     *
+     * @param code The action to perform.  This should
+     * be a number between {@link #FIRST_CALL_TRANSACTION} and
+     * {@link #LAST_CALL_TRANSACTION}.
+     * @param data Marshalled data being received from the caller.
+     * @param reply If the caller is expecting a result back, it should be marshalled
+     * in to here.
+     * @param flags Additional operation flags.  Either 0 for a normal
+     * RPC, or {@link #FLAG_ONEWAY} for a one-way RPC.
+     *
+     * @return Return true on a successful call; returning false is generally used to
+     * indicate that you did not understand the transaction code.
      */
-    protected boolean onTransact(int code, Parcel data, Parcel reply,
+    protected boolean onTransact(int code, @NonNull Parcel data, @Nullable Parcel reply,
             int flags) throws RemoteException {
         if (code == INTERFACE_TRANSACTION) {
             reply.writeString(getInterfaceDescriptor());
@@ -494,7 +528,7 @@
      * Implemented to call the more convenient version
      * {@link #dump(FileDescriptor, PrintWriter, String[])}.
      */
-    public void dump(FileDescriptor fd, String[] args) {
+    public void dump(@NonNull FileDescriptor fd, @Nullable String[] args) {
         FileOutputStream fout = new FileOutputStream(fd);
         PrintWriter pw = new FastPrintWriter(fout);
         try {
@@ -530,7 +564,7 @@
      * Like {@link #dump(FileDescriptor, String[])}, but ensures the target
      * executes asynchronously.
      */
-    public void dumpAsync(final FileDescriptor fd, final String[] args) {
+    public void dumpAsync(@NonNull final FileDescriptor fd, @Nullable final String[] args) {
         final FileOutputStream fout = new FileOutputStream(fd);
         final PrintWriter pw = new FastPrintWriter(fout);
         Thread thr = new Thread("Binder.dumpAsync") {
@@ -553,7 +587,8 @@
      * closed for you after you return.
      * @param args additional arguments to the dump request.
      */
-    protected void dump(FileDescriptor fd, PrintWriter fout, String[] args) {
+    protected void dump(@NonNull FileDescriptor fd, @NonNull PrintWriter fout,
+            @Nullable String[] args) {
     }
 
     /**
@@ -566,9 +601,10 @@
      * @throws RemoteException
      * @hide
      */
-    public void shellCommand(FileDescriptor in, FileDescriptor out, FileDescriptor err,
-            String[] args, ShellCallback callback,
-            ResultReceiver resultReceiver) throws RemoteException {
+    public void shellCommand(@Nullable FileDescriptor in, @Nullable FileDescriptor out,
+            @Nullable FileDescriptor err,
+            @NonNull String[] args, @Nullable ShellCallback callback,
+            @NonNull ResultReceiver resultReceiver) throws RemoteException {
         onShellCommand(in, out, err, args, callback, resultReceiver);
     }
 
@@ -580,8 +616,10 @@
      * Consider using {@link ShellCommand} to help in the implementation.</p>
      * @hide
      */
-    public void onShellCommand(FileDescriptor in, FileDescriptor out, FileDescriptor err,
-            String[] args, ShellCallback callback, ResultReceiver resultReceiver) throws RemoteException {
+    public void onShellCommand(@Nullable FileDescriptor in, @Nullable FileDescriptor out,
+            @Nullable FileDescriptor err,
+            @NonNull String[] args, @Nullable ShellCallback callback,
+            @NonNull ResultReceiver resultReceiver) throws RemoteException {
         FileOutputStream fout = new FileOutputStream(err != null ? err : out);
         PrintWriter pw = new FastPrintWriter(fout);
         pw.println("No shell command implementation.");
@@ -593,7 +631,7 @@
      * Default implementation rewinds the parcels and calls onTransact.  On
      * the remote side, transact calls into the binder to do the IPC.
      */
-    public final boolean transact(int code, Parcel data, Parcel reply,
+    public final boolean transact(int code, @NonNull Parcel data, @Nullable Parcel reply,
             int flags) throws RemoteException {
         if (false) Log.v("Binder", "Transact: " + code + " to " + this);
 
@@ -610,24 +648,16 @@
     /**
      * Local implementation is a no-op.
      */
-    public void linkToDeath(DeathRecipient recipient, int flags) {
+    public void linkToDeath(@NonNull DeathRecipient recipient, int flags) {
     }
 
     /**
      * Local implementation is a no-op.
      */
-    public boolean unlinkToDeath(DeathRecipient recipient, int flags) {
+    public boolean unlinkToDeath(@NonNull DeathRecipient recipient, int flags) {
         return true;
     }
 
-    protected void finalize() throws Throwable {
-        try {
-            destroyBinder();
-        } finally {
-            super.finalize();
-        }
-    }
-
     static void checkParcel(IBinder obj, int code, Parcel parcel, String msg) {
         if (CHECK_PARCEL_SIZE && parcel.dataSize() >= 800*1024) {
             // Trying to send > 800k, this is way too much
@@ -651,8 +681,8 @@
         }
     }
 
-    private native final void init();
-    private native final void destroyBinder();
+    private static native long getNativeBBinderHolder();
+    private static native long getFinalizer();
 
     // Entry point from android_util_Binder.cpp's onTransact
     private boolean execTransact(int code, long dataObj, long replyObj,
@@ -720,11 +750,207 @@
  */
 final class BinderProxy implements IBinder {
     // See android_util_Binder.cpp for the native half of this.
-    // TODO: Consider using NativeAllocationRegistry instead of finalization.
 
     // Assume the process-wide default value when created
     volatile boolean mWarnOnBlocking = Binder.sWarnOnBlocking;
 
+    /*
+     * Map from longs to BinderProxy, retaining only a WeakReference to the BinderProxies.
+     * We roll our own only because we need to lazily remove WeakReferences during accesses
+     * to avoid accumulating junk WeakReference objects. WeakHashMap isn't easily usable
+     * because we want weak values, not keys.
+     * Our hash table is never resized, but the number of entries is unlimited;
+     * performance degrades as occupancy increases significantly past MAIN_INDEX_SIZE.
+     * Not thread-safe. Client ensures there's a single access at a time.
+     */
+    private static final class ProxyMap {
+        private static final int LOG_MAIN_INDEX_SIZE = 8;
+        private static final int MAIN_INDEX_SIZE = 1 <<  LOG_MAIN_INDEX_SIZE;
+        private static final int MAIN_INDEX_MASK = MAIN_INDEX_SIZE - 1;
+
+        /**
+         * We next warn when we exceed this bucket size.
+         */
+        private int mWarnBucketSize = 20;
+
+        /**
+         * Increment mWarnBucketSize by WARN_INCREMENT each time we warn.
+         */
+        private static final int WARN_INCREMENT = 10;
+
+        /**
+         * Hash function tailored to native pointers.
+         * Returns a value < MAIN_INDEX_SIZE.
+         */
+        private static int hash(long arg) {
+            return ((int) ((arg >> 2) ^ (arg >> (2 + LOG_MAIN_INDEX_SIZE)))) & MAIN_INDEX_MASK;
+        }
+
+        /**
+         * Return the total number of pairs in the map.
+         */
+        int size() {
+            int size = 0;
+            for (ArrayList<WeakReference<BinderProxy>> a : mMainIndexValues) {
+                if (a != null) {
+                    size += a.size();
+                }
+            }
+            return size;
+        }
+
+        /**
+         * Remove ith entry from the hash bucket indicated by hash.
+         */
+        private void remove(int hash, int index) {
+            Long[] keyArray = mMainIndexKeys[hash];
+            ArrayList<WeakReference<BinderProxy>> valueArray = mMainIndexValues[hash];
+            int size = valueArray.size();  // KeyArray may have extra elements.
+            // Move last entry into empty slot, and truncate at end.
+            if (index != size - 1) {
+                keyArray[index] = keyArray[size - 1];
+                valueArray.set(index, valueArray.get(size - 1));
+            }
+            valueArray.remove(size - 1);
+            // Just leave key array entry; it's unused. We only trust the valueArray size.
+        }
+
+        /**
+         * Look up the supplied key. If we have a non-cleared entry for it, return it.
+         */
+        BinderProxy get(long key) {
+            int myHash = hash(key);
+            Long[] keyArray = mMainIndexKeys[myHash];
+            if (keyArray == null) {
+                return null;
+            }
+            ArrayList<WeakReference<BinderProxy>> valueArray = mMainIndexValues[myHash];
+            int bucketSize = valueArray.size();
+            for (int i = 0; i < bucketSize; ++i) {
+                long foundKey = keyArray[i];
+                if (key == foundKey) {
+                    WeakReference<BinderProxy> wr = valueArray.get(i);
+                    BinderProxy bp = wr.get();
+                    if (bp != null) {
+                        return bp;
+                    } else {
+                        remove(myHash, i);
+                        return null;
+                    }
+                }
+            }
+            return null;
+        }
+
+        private int mRandom;  // A counter used to generate a "random" index. World's 2nd worst RNG.
+
+        /**
+         * Add the key-value pair to the map.
+         * Requires that the indicated key is not already in the map.
+         */
+        void set(long key, @NonNull BinderProxy value) {
+            int myHash = hash(key);
+            ArrayList<WeakReference<BinderProxy>> valueArray = mMainIndexValues[myHash];
+            if (valueArray == null) {
+                valueArray = mMainIndexValues[myHash] = new ArrayList<>();
+                mMainIndexKeys[myHash] = new Long[1];
+            }
+            int size = valueArray.size();
+            WeakReference<BinderProxy> newWr = new WeakReference<>(value);
+            // First look for a cleared reference.
+            // This ensures that ArrayList size is bounded by the maximum occupancy of
+            // that bucket.
+            for (int i = 0; i < size; ++i) {
+                if (valueArray.get(i).get() == null) {
+                    valueArray.set(i, newWr);
+                    Long[] keyArray = mMainIndexKeys[myHash];
+                    keyArray[i] = key;
+                    if (i < size - 1) {
+                        // "Randomly" check one of the remaining entries in [i+1, size), so that
+                        // needlessly long buckets are eventually pruned.
+                        int rnd = Math.floorMod(++mRandom, size - (i + 1));
+                        if (valueArray.get(i + 1 + rnd).get() == null) {
+                            remove(myHash, i + 1 + rnd);
+                        }
+                    }
+                    return;
+                }
+            }
+            valueArray.add(size, newWr);
+            Long[] keyArray = mMainIndexKeys[myHash];
+            if (keyArray.length == size) {
+                // size >= 1, since we initially allocated one element
+                Long[] newArray = new Long[size + size / 2 + 2];
+                System.arraycopy(keyArray, 0, newArray, 0, size);
+                newArray[size] = key;
+                mMainIndexKeys[myHash] = newArray;
+            } else {
+                keyArray[size] = key;
+            }
+            if (size >= mWarnBucketSize) {
+                Log.v(Binder.TAG, "BinderProxy map growth! bucket size = " + size
+                        + " total = " + size());
+                mWarnBucketSize += WARN_INCREMENT;
+            }
+        }
+
+        // Corresponding ArrayLists in the following two arrays always have the same size.
+        // They contain no empty entries. However WeakReferences in the values ArrayLists
+        // may have been cleared.
+
+        // mMainIndexKeys[i][j] corresponds to mMainIndexValues[i].get(j) .
+        // The values ArrayList has the proper size(), the corresponding keys array
+        // is always at least the same size, but may be larger.
+        // If either a particular keys array, or the corresponding values ArrayList
+        // are null, then they both are.
+        private final Long[][] mMainIndexKeys = new Long[MAIN_INDEX_SIZE][];
+        private final ArrayList<WeakReference<BinderProxy>>[] mMainIndexValues =
+                new ArrayList[MAIN_INDEX_SIZE];
+    }
+
+    private static ProxyMap sProxyMap = new ProxyMap();
+
+    /**
+     * Return a BinderProxy for IBinder.
+     * This method is thread-hostile!  The (native) caller serializes getInstance() calls using
+     * gProxyLock.
+     * If we previously returned a BinderProxy bp for the same iBinder, and bp is still
+     * in use, then we return the same bp.
+     *
+     * @param nativeData C++ pointer to (possibly still empty) BinderProxyNativeData.
+     * Takes ownership of nativeData iff <result>.mNativeData == nativeData.  Caller will usually
+     * delete nativeData if that's not the case.
+     * @param iBinder C++ pointer to IBinder. Does not take ownership of referenced object.
+     */
+    private static BinderProxy getInstance(long nativeData, long iBinder) {
+        BinderProxy result = sProxyMap.get(iBinder);
+        if (result == null) {
+            result = new BinderProxy(nativeData);
+            sProxyMap.set(iBinder, result);
+        }
+        return result;
+    }
+
+    private BinderProxy(long nativeData) {
+        mNativeData = nativeData;
+        NoImagePreloadHolder.sRegistry.registerNativeAllocation(this, mNativeData);
+    }
+
+    /**
+     * Guestimate of native memory associated with a BinderProxy.
+     * This includes the underlying IBinder, associated DeathRecipientList, and KeyedVector
+     * that points back to us. We guess high since it includes a GlobalRef, which
+     * may be in short supply.
+     */
+    private static final int NATIVE_ALLOCATION_SIZE = 1000;
+
+    // Use a Holder to allow static initialization of BinderProxy in the boot image, and
+    // to avoid some initialization ordering issues.
+    private static class NoImagePreloadHolder {
+        public static final NativeAllocationRegistry sRegistry = new NativeAllocationRegistry(
+                BinderProxy.class.getClassLoader(), getNativeFinalizer(), NATIVE_ALLOCATION_SIZE);
+    }
+
     public native boolean pingBinder();
     public native boolean isBinderAlive();
 
@@ -760,6 +986,7 @@
         }
     }
 
+    private static native long getNativeFinalizer();
     public native String getInterfaceDescriptor() throws RemoteException;
     public native boolean transactNative(int code, Parcel data, Parcel reply,
             int flags) throws RemoteException;
@@ -814,21 +1041,6 @@
         }
     }
 
-    BinderProxy() {
-        mSelf = new WeakReference(this);
-    }
-
-    @Override
-    protected void finalize() throws Throwable {
-        try {
-            destroy();
-        } finally {
-            super.finalize();
-        }
-    }
-
-    private native final void destroy();
-
     private static final void sendDeathNotice(DeathRecipient recipient) {
         if (false) Log.v("JavaBinder", "sendDeathNotice to " + recipient);
         try {
@@ -840,19 +1052,9 @@
         }
     }
 
-    // This WeakReference to "this" is used only by native code to "attach" to the
-    // native IBinder object.
-    // Using WeakGlobalRefs instead currently appears unsafe, in that they can yield a
-    // non-null value after the BinderProxy is enqueued for finalization.
-    // Used only once immediately after construction.
-    // TODO: Consider making the extra native-to-java call to compute this on the fly.
-    final private WeakReference mSelf;
-
-    // Native pointer to the wrapped native IBinder object. Counted as strong reference.
-    private long mObject;
-
-    // Native pointer to native DeathRecipientList. Counted as strong reference.
-    // Basically owned by the JavaProxy object. Reference counted only because DeathRecipients
-    // hold a weak reference that can be temporarily promoted.
-    private long mOrgue;
+    /**
+     * C++ pointer to BinderProxyNativeData. That consists of strong pointers to the
+     * native IBinder object, and a DeathRecipientList.
+     */
+    private final long mNativeData;
 }
diff --git a/core/java/android/os/Debug.java b/core/java/android/os/Debug.java
index 75fea52..2efde23 100644
--- a/core/java/android/os/Debug.java
+++ b/core/java/android/os/Debug.java
@@ -23,7 +23,6 @@
 import com.android.internal.util.FastPrintWriter;
 import com.android.internal.util.TypedProperties;
 
-import dalvik.bytecode.OpcodeInfo;
 import dalvik.system.VMDebug;
 
 import org.apache.harmony.dalvik.ddmc.Chunk;
@@ -48,8 +47,6 @@
 import java.util.Map;
 
 
-
-
 /**
  * Provides various debugging methods for Android applications, including
  * tracing and allocation counts.
@@ -1948,13 +1945,7 @@
      */
     @Deprecated
     public static class InstructionCount {
-        private static final int NUM_INSTR =
-            OpcodeInfo.MAXIMUM_PACKED_VALUE + 1;
-
-        private int[] mCounts;
-
         public InstructionCount() {
-            mCounts = new int[NUM_INSTR];
         }
 
         /**
@@ -1964,13 +1955,7 @@
          * @return true if counting was started
          */
         public boolean resetAndStart() {
-            try {
-                VMDebug.startInstructionCounting();
-                VMDebug.resetInstructionCount();
-            } catch (UnsupportedOperationException uoe) {
-                return false;
-            }
-            return true;
+            return false;
         }
 
         /**
@@ -1978,13 +1963,7 @@
          * counting process.
          */
         public boolean collect() {
-            try {
-                VMDebug.stopInstructionCounting();
-                VMDebug.getInstructionCount(mCounts);
-            } catch (UnsupportedOperationException uoe) {
-                return false;
-            }
-            return true;
+            return false;
         }
 
         /**
@@ -1992,13 +1971,7 @@
          * all threads).
          */
         public int globalTotal() {
-            int count = 0;
-
-            for (int i = 0; i < NUM_INSTR; i++) {
-                count += mCounts[i];
-            }
-
-            return count;
+            return 0;
         }
 
         /**
@@ -2006,15 +1979,7 @@
          * executed globally.
          */
         public int globalMethodInvocations() {
-            int count = 0;
-
-            for (int i = 0; i < NUM_INSTR; i++) {
-                if (OpcodeInfo.isInvoke(i)) {
-                    count += mCounts[i];
-                }
-            }
-
-            return count;
+            return 0;
         }
     }
 
diff --git a/core/java/android/os/HwBinder.java b/core/java/android/os/HwBinder.java
index 270e63f..5e2a081 100644
--- a/core/java/android/os/HwBinder.java
+++ b/core/java/android/os/HwBinder.java
@@ -16,10 +16,10 @@
 
 package android.os;
 
-import java.util.ArrayList;
-import java.util.NoSuchElementException;
 import libcore.util.NativeAllocationRegistry;
 
+import java.util.NoSuchElementException;
+
 /** @hide */
 public abstract class HwBinder implements IHwBinder {
     private static final String TAG = "HwBinder";
@@ -46,9 +46,16 @@
     public native final void registerService(String serviceName)
         throws RemoteException;
 
-    public static native final IHwBinder getService(
+    public static final IHwBinder getService(
             String iface,
             String serviceName)
+        throws RemoteException, NoSuchElementException {
+        return getService(iface, serviceName, false /* retry */);
+    }
+    public static native final IHwBinder getService(
+            String iface,
+            String serviceName,
+            boolean retry)
         throws RemoteException, NoSuchElementException;
 
     public static native final void configureRpcThreadpool(
diff --git a/core/java/android/os/HwBlob.java b/core/java/android/os/HwBlob.java
index 88226f0..5e9b9ae3 100644
--- a/core/java/android/os/HwBlob.java
+++ b/core/java/android/os/HwBlob.java
@@ -43,6 +43,18 @@
     public native final double getDouble(long offset);
     public native final String getString(long offset);
 
+    /**
+      The copyTo... methods copy the blob's data, starting from the given
+      byte offset, into the array. A total of "size" _elements_ are copied.
+     */
+    public native final void copyToBoolArray(long offset, boolean[] array, int size);
+    public native final void copyToInt8Array(long offset, byte[] array, int size);
+    public native final void copyToInt16Array(long offset, short[] array, int size);
+    public native final void copyToInt32Array(long offset, int[] array, int size);
+    public native final void copyToInt64Array(long offset, long[] array, int size);
+    public native final void copyToFloatArray(long offset, float[] array, int size);
+    public native final void copyToDoubleArray(long offset, double[] array, int size);
+
     public native final void putBool(long offset, boolean x);
     public native final void putInt8(long offset, byte x);
     public native final void putInt16(long offset, short x);
@@ -52,6 +64,14 @@
     public native final void putDouble(long offset, double x);
     public native final void putString(long offset, String x);
 
+    public native final void putBoolArray(long offset, boolean[] x);
+    public native final void putInt8Array(long offset, byte[] x);
+    public native final void putInt16Array(long offset, short[] x);
+    public native final void putInt32Array(long offset, int[] x);
+    public native final void putInt64Array(long offset, long[] x);
+    public native final void putFloatArray(long offset, float[] x);
+    public native final void putDoubleArray(long offset, double[] x);
+
     public native final void putBlob(long offset, HwBlob blob);
 
     public native final long handle();
diff --git a/core/java/android/os/IBinder.java b/core/java/android/os/IBinder.java
index f762a05..20d8276 100644
--- a/core/java/android/os/IBinder.java
+++ b/core/java/android/os/IBinder.java
@@ -16,6 +16,9 @@
 
 package android.os;
 
+import android.annotation.NonNull;
+import android.annotation.Nullable;
+
 import java.io.FileDescriptor;
 
 /**
@@ -166,7 +169,7 @@
     /**
      * Get the canonical name of the interface supported by this binder.
      */
-    public String getInterfaceDescriptor() throws RemoteException;
+    public @Nullable String getInterfaceDescriptor() throws RemoteException;
 
     /**
      * Check to see if the object still exists.
@@ -192,7 +195,7 @@
      * to instantiate a proxy class to marshall calls through
      * the transact() method.
      */
-    public IInterface queryLocalInterface(String descriptor);
+    public @Nullable IInterface queryLocalInterface(@NonNull String descriptor);
 
     /**
      * Print the object's state into the given stream.
@@ -200,7 +203,7 @@
      * @param fd The raw file descriptor that the dump is being sent to.
      * @param args additional arguments to the dump request.
      */
-    public void dump(FileDescriptor fd, String[] args) throws RemoteException;
+    public void dump(@NonNull FileDescriptor fd, @Nullable String[] args) throws RemoteException;
 
     /**
      * Like {@link #dump(FileDescriptor, String[])} but always executes
@@ -210,7 +213,8 @@
      * @param fd The raw file descriptor that the dump is being sent to.
      * @param args additional arguments to the dump request.
      */
-    public void dumpAsync(FileDescriptor fd, String[] args) throws RemoteException;
+    public void dumpAsync(@NonNull FileDescriptor fd, @Nullable String[] args)
+            throws RemoteException;
 
     /**
      * Execute a shell command on this object.  This may be performed asynchrously from the caller;
@@ -224,9 +228,10 @@
      * @param resultReceiver Called when the command has finished executing, with the result code.
      * @hide
      */
-    public void shellCommand(FileDescriptor in, FileDescriptor out, FileDescriptor err,
-            String[] args, ShellCallback shellCallback,
-            ResultReceiver resultReceiver) throws RemoteException;
+    public void shellCommand(@Nullable FileDescriptor in, @Nullable FileDescriptor out,
+            @Nullable FileDescriptor err,
+            @NonNull String[] args, @Nullable ShellCallback shellCallback,
+            @NonNull ResultReceiver resultReceiver) throws RemoteException;
 
     /**
      * Perform a generic operation with the object.
@@ -241,8 +246,12 @@
      * null if you are not interested in the return value.
      * @param flags Additional operation flags.  Either 0 for a normal
      * RPC, or {@link #FLAG_ONEWAY} for a one-way RPC.
+     *
+     * @return Returns the result from {@link Binder#onTransact}.  A successful call
+     * generally returns true; false generally means the transaction code was not
+     * understood.
      */
-    public boolean transact(int code, Parcel data, Parcel reply, int flags)
+    public boolean transact(int code, @NonNull Parcel data, @Nullable Parcel reply, int flags)
         throws RemoteException;
 
     /**
@@ -271,7 +280,7 @@
      * 
      * @see #unlinkToDeath
      */
-    public void linkToDeath(DeathRecipient recipient, int flags)
+    public void linkToDeath(@NonNull DeathRecipient recipient, int flags)
             throws RemoteException;
 
     /**
@@ -292,5 +301,5 @@
      * exception will <em>not</em> be thrown, and you will receive a false
      * return value instead.
      */
-    public boolean unlinkToDeath(DeathRecipient recipient, int flags);
+    public boolean unlinkToDeath(@NonNull DeathRecipient recipient, int flags);
 }
diff --git a/core/java/com/android/internal/app/IMediaContainerService.aidl b/core/java/com/android/internal/app/IMediaContainerService.aidl
index 81ea191..36e4c1c6 100644
--- a/core/java/com/android/internal/app/IMediaContainerService.aidl
+++ b/core/java/com/android/internal/app/IMediaContainerService.aidl
@@ -27,9 +27,6 @@
 
     PackageInfoLite getMinimalPackageInfo(String packagePath, int flags, String abiOverride);
     ObbInfo getObbInfo(String filename);
-    long calculateDirectorySize(String directory);
-    /** Return file system stats: [0] is total bytes, [1] is available bytes */
-    long[] getFileSystemStats(String path);
     void clearDirectory(String directory);
     long calculateInstalledSize(String packagePath, boolean isForwardLocked, String abiOverride);
 }
diff --git a/core/java/com/android/internal/net/OWNERS b/core/java/com/android/internal/net/OWNERS
index 7cb32ff..e2064a8 100644
--- a/core/java/com/android/internal/net/OWNERS
+++ b/core/java/com/android/internal/net/OWNERS
@@ -2,5 +2,5 @@
 
 ek@google.com
 hugobenichi@google.com
-jsharkey@google.com
+jsharkey@android.com
 lorenzo@google.com
diff --git a/core/java/com/android/internal/os/ZygoteInit.java b/core/java/com/android/internal/os/ZygoteInit.java
index 6d8b811..3cda820 100644
--- a/core/java/com/android/internal/os/ZygoteInit.java
+++ b/core/java/com/android/internal/os/ZygoteInit.java
@@ -546,13 +546,14 @@
         for (String classPathElement : classPathElements) {
             // System server is fully AOTed and never profiled
             // for profile guided compilation.
-            // TODO: Make this configurable between INTERPRET_ONLY, SPEED, SPACE and EVERYTHING?
+            String systemServerFilter = SystemProperties.get(
+                    "dalvik.vm.systemservercompilerfilter", "speed");
 
             int dexoptNeeded;
             try {
                 dexoptNeeded = DexFile.getDexOptNeeded(
-                    classPathElement, instructionSet, "speed",
-                    false /* newProfile */, false /* downgrade */);
+                    classPathElement, instructionSet, systemServerFilter,
+                    null /* classLoaderContext */, false /* newProfile */, false /* downgrade */);
             } catch (FileNotFoundException ignored) {
                 // Do not add to the classpath.
                 Log.w(TAG, "Missing classpath element for system server: " + classPathElement);
@@ -570,13 +571,13 @@
                 final String packageName = "*";
                 final String outputPath = null;
                 final int dexFlags = 0;
-                final String compilerFilter = "speed";
+                final String compilerFilter = systemServerFilter;
                 final String uuid = StorageManager.UUID_PRIVATE_INTERNAL;
                 final String seInfo = null;
                 try {
                     installd.dexopt(classPathElement, Process.SYSTEM_UID, packageName,
                             instructionSet, dexoptNeeded, outputPath, dexFlags, compilerFilter,
-                            uuid, sharedLibraries, seInfo);
+                            uuid, sharedLibraries, seInfo, false /* downgrade */);
                 } catch (RemoteException | ServiceSpecificException e) {
                     // Ignore (but log), we need this on the classpath for fallback mode.
                     Log.w(TAG, "Failed compiling classpath element for system server: "
diff --git a/core/jni/android_os_HwBinder.cpp b/core/jni/android_os_HwBinder.cpp
index fe14d48..08d9527 100644
--- a/core/jni/android_os_HwBinder.cpp
+++ b/core/jni/android_os_HwBinder.cpp
@@ -35,6 +35,7 @@
 #include <hidl/HidlTransportSupport.h>
 #include <hwbinder/ProcessState.h>
 #include <nativehelper/ScopedLocalRef.h>
+#include <nativehelper/ScopedUtfChars.h>
 #include <vintf/parse_string.h>
 #include <utils/misc.h>
 
@@ -261,14 +262,9 @@
         JNIEnv *env,
         jobject thiz,
         jstring serviceNameObj) {
-    if (serviceNameObj == NULL) {
-        jniThrowException(env, "java/lang/NullPointerException", NULL);
-        return;
-    }
-
-    const char *serviceName = env->GetStringUTFChars(serviceNameObj, NULL);
-    if (serviceName == NULL) {
-        return;  // XXX exception already pending?
+    ScopedUtfChars str(env, serviceNameObj);
+    if (str.c_str() == nullptr) {
+        return;  // NPE will be pending.
     }
 
     sp<hardware::IBinder> binder = JHwBinder::GetNativeBinder(env, thiz);
@@ -284,15 +280,12 @@
         return;
     }
 
-    Return<bool> ret = manager->add(serviceName, base);
-
-    env->ReleaseStringUTFChars(serviceNameObj, serviceName);
-    serviceName = NULL;
+    Return<bool> ret = manager->add(str.c_str(), base);
 
     bool ok = ret.isOk() && ret;
 
     if (ok) {
-        LOG(INFO) << "Starting thread pool.";
+        LOG(INFO) << "HwBinder: Starting thread pool for " << str.c_str();
         ::android::hardware::ProcessState::self()->startThreadPool();
     }
 
@@ -303,36 +296,31 @@
         JNIEnv *env,
         jclass /* clazzObj */,
         jstring ifaceNameObj,
-        jstring serviceNameObj) {
+        jstring serviceNameObj,
+        jboolean retry) {
 
     using ::android::hidl::base::V1_0::IBase;
     using ::android::hardware::details::getRawServiceInternal;
 
-    if (ifaceNameObj == NULL) {
-        jniThrowException(env, "java/lang/NullPointerException", NULL);
-        return NULL;
-    }
-    if (serviceNameObj == NULL) {
-        jniThrowException(env, "java/lang/NullPointerException", NULL);
-        return NULL;
+    std::string ifaceName;
+    {
+        ScopedUtfChars str(env, ifaceNameObj);
+        if (str.c_str() == nullptr) {
+            return nullptr;  // NPE will be pending.
+        }
+        ifaceName = str.c_str();
     }
 
-    const char *ifaceNameCStr = env->GetStringUTFChars(ifaceNameObj, NULL);
-    if (ifaceNameCStr == NULL) {
-        return NULL; // XXX exception already pending?
+    std::string serviceName;
+    {
+        ScopedUtfChars str(env, serviceNameObj);
+        if (str.c_str() == nullptr) {
+            return nullptr;  // NPE will be pending.
+        }
+        serviceName = str.c_str();
     }
-    std::string ifaceName(ifaceNameCStr);
-    env->ReleaseStringUTFChars(ifaceNameObj, ifaceNameCStr);
 
-    const char *serviceNameCStr = env->GetStringUTFChars(serviceNameObj, NULL);
-    if (serviceNameCStr == NULL) {
-        return NULL; // XXX exception already pending?
-    }
-    std::string serviceName(serviceNameCStr);
-    env->ReleaseStringUTFChars(serviceNameObj, serviceNameCStr);
-
-    // TODO(b/67981006): true /* retry */
-    sp<IBase> ret = getRawServiceInternal(ifaceName, serviceName, false /* retry */, false /* getStub */); 
+    sp<IBase> ret = getRawServiceInternal(ifaceName, serviceName, retry /* retry */, false /* getStub */);
     sp<hardware::IBinder> service = hardware::toBinder<hidl::base::V1_0::IBase>(ret);
 
     if (service == NULL) {
@@ -340,13 +328,14 @@
         return NULL;
     }
 
-    LOG(INFO) << "Starting thread pool.";
+    LOG(INFO) << "HwBinder: Starting thread pool for " << serviceName << "::" << ifaceName;
     ::android::hardware::ProcessState::self()->startThreadPool();
 
     return JHwRemoteBinder::NewObject(env, service);
 }
 
-void JHwBinder_native_configureRpcThreadpool(jlong maxThreads, jboolean callerWillJoin) {
+void JHwBinder_native_configureRpcThreadpool(JNIEnv *, jclass,
+        jlong maxThreads, jboolean callerWillJoin) {
     CHECK(maxThreads > 0);
     ProcessState::self()->setThreadPoolConfiguration(maxThreads, callerWillJoin /*callerJoinsPool*/);
 }
@@ -355,7 +344,7 @@
     IPCThreadState::self()->joinThreadPool();
 }
 
-static void JHwBinder_report_sysprop_change(JNIEnv /**env*/, jobject /*clazz*/)
+static void JHwBinder_report_sysprop_change(JNIEnv * /*env*/, jclass /*clazz*/)
 {
     report_sysprop_change();
 }
@@ -371,7 +360,7 @@
     { "registerService", "(Ljava/lang/String;)V",
         (void *)JHwBinder_native_registerService },
 
-    { "getService", "(Ljava/lang/String;Ljava/lang/String;)L" PACKAGE_PATH "/IHwBinder;",
+    { "getService", "(Ljava/lang/String;Ljava/lang/String;Z)L" PACKAGE_PATH "/IHwBinder;",
         (void *)JHwBinder_native_getService },
 
     { "configureRpcThreadpool", "(JZ)V",
diff --git a/core/jni/android_os_HwBlob.cpp b/core/jni/android_os_HwBlob.cpp
index 40d49b7..737ec47 100644
--- a/core/jni/android_os_HwBlob.cpp
+++ b/core/jni/android_os_HwBlob.cpp
@@ -60,12 +60,12 @@
         JNIEnv *env, jobject thiz, const sp<JHwBlob> &context) {
     sp<JHwBlob> old = (JHwBlob *)env->GetLongField(thiz, gFields.contextID);
 
-    if (context != NULL) {
-        context->incStrong(NULL /* id */);
+    if (context != nullptr) {
+        context->incStrong(nullptr /* id */);
     }
 
-    if (old != NULL) {
-        old->decStrong(NULL /* id */);
+    if (old != nullptr) {
+        old->decStrong(nullptr /* id */);
     }
 
     env->SetLongField(thiz, gFields.contextID, (long)context.get());
@@ -150,6 +150,10 @@
     return mBuffer;
 }
 
+void *JHwBlob::data() {
+    return mBuffer;
+}
+
 size_t JHwBlob::size() const {
     return mSize;
 }
@@ -242,8 +246,8 @@
 static void releaseNativeContext(void *nativeContext) {
     sp<JHwBlob> parcel = (JHwBlob *)nativeContext;
 
-    if (parcel != NULL) {
-        parcel->decStrong(NULL /* id */);
+    if (parcel != nullptr) {
+        parcel->decStrong(nullptr /* id */);
     }
 }
 
@@ -313,6 +317,82 @@
     return env->NewStringUTF(s->c_str());
 }
 
+#define DEFINE_BLOB_ARRAY_COPIER(Suffix,Type,NewType)                          \
+static void JHwBlob_native_copyTo ## Suffix ## Array(                          \
+        JNIEnv *env,                                                           \
+        jobject thiz,                                                          \
+        jlong offset,                                                          \
+        Type ## Array array,                                                   \
+        jint size) {                                                           \
+    if (array == nullptr) {                                                    \
+        jniThrowException(env, "java/lang/NullPointerException", nullptr);     \
+        return;                                                                \
+    }                                                                          \
+                                                                               \
+    if (env->GetArrayLength(array) < size) {                                   \
+        signalExceptionForError(env, BAD_VALUE);                               \
+        return;                                                                \
+    }                                                                          \
+                                                                               \
+    sp<JHwBlob> blob = JHwBlob::GetNativeContext(env, thiz);                   \
+                                                                               \
+    if ((offset + size * sizeof(Type)) > blob->size()) {                       \
+        signalExceptionForError(env, -ERANGE);                                 \
+        return;                                                                \
+    }                                                                          \
+                                                                               \
+    env->Set ## NewType ## ArrayRegion(                                        \
+            array,                                                             \
+            0 /* start */,                                                     \
+            size,                                                              \
+            reinterpret_cast<const Type *>(                                    \
+                static_cast<const uint8_t *>(blob->data()) + offset));         \
+}
+
+static void JHwBlob_native_copyToBoolArray(
+        JNIEnv *env,
+        jobject thiz,
+        jlong offset,
+        jbooleanArray array,
+        jint size) {
+    if (array == nullptr) {
+        jniThrowException(env, "java/lang/NullPointerException", nullptr);
+        return;
+    }
+
+    if (env->GetArrayLength(array) < size) {
+        signalExceptionForError(env, BAD_VALUE);
+        return;
+    }
+
+    sp<JHwBlob> blob = JHwBlob::GetNativeContext(env, thiz);
+
+    if ((offset + size * sizeof(bool)) > blob->size()) {
+        signalExceptionForError(env, -ERANGE);
+        return;
+    }
+
+    const bool *src =
+        reinterpret_cast<const bool *>(
+                static_cast<const uint8_t *>(blob->data()) + offset);
+
+    jboolean *dst = env->GetBooleanArrayElements(array, nullptr /* isCopy */);
+
+    for (jint i = 0; i < size; ++i) {
+        dst[i] = src[i];
+    }
+
+    env->ReleaseBooleanArrayElements(array, dst, 0 /* mode */);
+    dst = nullptr;
+}
+
+DEFINE_BLOB_ARRAY_COPIER(Int8,jbyte,Byte)
+DEFINE_BLOB_ARRAY_COPIER(Int16,jshort,Short)
+DEFINE_BLOB_ARRAY_COPIER(Int32,jint,Int)
+DEFINE_BLOB_ARRAY_COPIER(Int64,jlong,Long)
+DEFINE_BLOB_ARRAY_COPIER(Float,jfloat,Float)
+DEFINE_BLOB_ARRAY_COPIER(Double,jdouble,Double)
+
 #define DEFINE_BLOB_PUTTER(Suffix,Type)                                        \
 static void JHwBlob_native_put ## Suffix(                                      \
         JNIEnv *env, jobject thiz, jlong offset, Type x) {                     \
@@ -375,6 +455,72 @@
     blob->putBlob(offset + hidl_string::kOffsetOfBuffer, subBlob);
 }
 
+#define DEFINE_BLOB_ARRAY_PUTTER(Suffix,Type,NewType)                          \
+static void JHwBlob_native_put ## Suffix ## Array(                             \
+        JNIEnv *env, jobject thiz, jlong offset, Type ## Array array) {        \
+                                                                               \
+    if (array == nullptr) {                                                    \
+        jniThrowException(env, "java/lang/NullPointerException", nullptr);     \
+        return;                                                                \
+    }                                                                          \
+                                                                               \
+    sp<JHwBlob> blob = JHwBlob::GetNativeContext(env, thiz);                   \
+                                                                               \
+    jsize len = env->GetArrayLength(array);                                    \
+                                                                               \
+    Type *src =                                                                \
+        env->Get ## NewType ## ArrayElements(array, nullptr /* isCopy */);     \
+                                                                               \
+    status_t err = blob->write(offset, src, len * sizeof(Type));               \
+                                                                               \
+    env->Release ## NewType ## ArrayElements(array, src, 0 /* mode */);        \
+    src = nullptr;                                                             \
+                                                                               \
+    if (err != OK) {                                                           \
+        signalExceptionForError(env, err);                                     \
+    }                                                                          \
+}
+
+DEFINE_BLOB_ARRAY_PUTTER(Int8,jbyte,Byte)
+DEFINE_BLOB_ARRAY_PUTTER(Int16,jshort,Short)
+DEFINE_BLOB_ARRAY_PUTTER(Int32,jint,Int)
+DEFINE_BLOB_ARRAY_PUTTER(Int64,jlong,Long)
+DEFINE_BLOB_ARRAY_PUTTER(Float,jfloat,Float)
+DEFINE_BLOB_ARRAY_PUTTER(Double,jdouble,Double)
+
+static void JHwBlob_native_putBoolArray(
+        JNIEnv *env, jobject thiz, jlong offset, jbooleanArray array) {
+
+    if (array == nullptr) {
+        jniThrowException(env, "java/lang/NullPointerException", nullptr);
+        return;
+    }
+
+    sp<JHwBlob> blob = JHwBlob::GetNativeContext(env, thiz);
+
+    jsize len = env->GetArrayLength(array);
+
+    if ((offset + len * sizeof(bool)) > blob->size()) {
+        signalExceptionForError(env, -ERANGE);
+        return;
+    }
+
+    const jboolean *src =
+        env->GetBooleanArrayElements(array, nullptr /* isCopy */);
+
+    bool *dst = reinterpret_cast<bool *>(
+            static_cast<uint8_t *>(blob->data()) + offset);
+
+    for (jsize i = 0; i < len; ++i) {
+        dst[i] = src[i];
+    }
+
+    env->ReleaseBooleanArrayElements(
+            array, const_cast<jboolean *>(src), 0 /* mode */);
+
+    src = nullptr;
+}
+
 static void JHwBlob_native_putBlob(
         JNIEnv *env, jobject thiz, jlong offset, jobject blobObj) {
     if (blobObj == nullptr) {
@@ -413,6 +559,14 @@
     { "getDouble", "(J)D", (void *)JHwBlob_native_getDouble },
     { "getString", "(J)Ljava/lang/String;", (void *)JHwBlob_native_getString },
 
+    { "copyToBoolArray", "(J[ZI)V", (void *)JHwBlob_native_copyToBoolArray },
+    { "copyToInt8Array", "(J[BI)V", (void *)JHwBlob_native_copyToInt8Array },
+    { "copyToInt16Array", "(J[SI)V", (void *)JHwBlob_native_copyToInt16Array },
+    { "copyToInt32Array", "(J[II)V", (void *)JHwBlob_native_copyToInt32Array },
+    { "copyToInt64Array", "(J[JI)V", (void *)JHwBlob_native_copyToInt64Array },
+    { "copyToFloatArray", "(J[FI)V", (void *)JHwBlob_native_copyToFloatArray },
+    { "copyToDoubleArray", "(J[DI)V", (void *)JHwBlob_native_copyToDoubleArray },
+
     { "putBool", "(JZ)V", (void *)JHwBlob_native_putBool },
     { "putInt8", "(JB)V", (void *)JHwBlob_native_putInt8 },
     { "putInt16", "(JS)V", (void *)JHwBlob_native_putInt16 },
@@ -422,6 +576,14 @@
     { "putDouble", "(JD)V", (void *)JHwBlob_native_putDouble },
     { "putString", "(JLjava/lang/String;)V", (void *)JHwBlob_native_putString },
 
+    { "putBoolArray", "(J[Z)V", (void *)JHwBlob_native_putBoolArray },
+    { "putInt8Array", "(J[B)V", (void *)JHwBlob_native_putInt8Array },
+    { "putInt16Array", "(J[S)V", (void *)JHwBlob_native_putInt16Array },
+    { "putInt32Array", "(J[I)V", (void *)JHwBlob_native_putInt32Array },
+    { "putInt64Array", "(J[J)V", (void *)JHwBlob_native_putInt64Array },
+    { "putFloatArray", "(J[F)V", (void *)JHwBlob_native_putFloatArray },
+    { "putDoubleArray", "(J[D)V", (void *)JHwBlob_native_putDoubleArray },
+
     { "putBlob", "(JL" PACKAGE_PATH "/HwBlob;)V",
         (void *)JHwBlob_native_putBlob },
 
diff --git a/core/jni/android_os_HwBlob.h b/core/jni/android_os_HwBlob.h
index 39393cb..6b1db63 100644
--- a/core/jni/android_os_HwBlob.h
+++ b/core/jni/android_os_HwBlob.h
@@ -50,6 +50,8 @@
             size_t offset, const android::hardware::hidl_string **s) const;
 
     const void *data() const;
+    void *data();
+
     size_t size() const;
 
     status_t putBlob(size_t offset, const sp<JHwBlob> &blob);
diff --git a/core/jni/android_util_Binder.cpp b/core/jni/android_util_Binder.cpp
index 768f53f..9f8d288 100644
--- a/core/jni/android_util_Binder.cpp
+++ b/core/jni/android_util_Binder.cpp
@@ -20,8 +20,7 @@
 #include "android_os_Parcel.h"
 #include "android_util_Binder.h"
 
-#include <nativehelper/JNIHelp.h>
-
+#include <atomic>
 #include <fcntl.h>
 #include <inttypes.h>
 #include <stdio.h>
@@ -44,8 +43,9 @@
 #include <utils/SystemClock.h>
 #include <utils/threads.h>
 
-#include <nativehelper/ScopedUtfChars.h>
+#include <nativehelper/JNIHelp.h>
 #include <nativehelper/ScopedLocalRef.h>
+#include <nativehelper/ScopedUtfChars.h>
 
 #include "core_jni_helpers.h"
 
@@ -97,14 +97,11 @@
 {
     // Class state.
     jclass mClass;
-    jmethodID mConstructor;
+    jmethodID mGetInstance;
     jmethodID mSendDeathNotice;
 
     // Object state.
-    jfieldID mObject;
-    jfieldID mSelf;
-    jfieldID mOrgue;
-
+    jfieldID mNativeData;  // Field holds native pointer to BinderProxyNativeData.
 } gBinderProxyOffsets;
 
 static struct class_offsets_t
@@ -133,24 +130,57 @@
     jmethodID mCallback;
 } gStrictModeCallbackOffsets;
 
-// ****************************************************************************
-// ****************************************************************************
-// ****************************************************************************
-
-static volatile int32_t gNumRefsCreated = 0;
-static volatile int32_t gNumProxyRefs = 0;
-static volatile int32_t gNumLocalRefs = 0;
-static volatile int32_t gNumDeathRefs = 0;
-
-static void incRefsCreated(JNIEnv* env)
+static struct thread_dispatch_offsets_t
 {
-    int old = android_atomic_inc(&gNumRefsCreated);
-    if (old == 200) {
-        android_atomic_and(0, &gNumRefsCreated);
-        env->CallStaticVoidMethod(gBinderInternalOffsets.mClass,
-                gBinderInternalOffsets.mForceGc);
+    // Class state.
+    jclass mClass;
+    jmethodID mDispatchUncaughtException;
+    jmethodID mCurrentThread;
+} gThreadDispatchOffsets;
+
+// ****************************************************************************
+// ****************************************************************************
+// ****************************************************************************
+
+static constexpr int32_t PROXY_WARN_INTERVAL = 5000;
+static constexpr uint32_t GC_INTERVAL = 1000;
+
+// Protected by gProxyLock. We warn if this gets too large.
+static int32_t gNumProxies = 0;
+static int32_t gProxiesWarned = 0;
+
+// Number of GlobalRefs held by JavaBBinders.
+static std::atomic<uint32_t> gNumLocalRefsCreated(0);
+static std::atomic<uint32_t> gNumLocalRefsDeleted(0);
+// Number of GlobalRefs held by JavaDeathRecipients.
+static std::atomic<uint32_t> gNumDeathRefsCreated(0);
+static std::atomic<uint32_t> gNumDeathRefsDeleted(0);
+
+// We collected after creating this many refs.
+static std::atomic<uint32_t> gCollectedAtRefs(0);
+
+// Garbage collect if we've allocated at least GC_INTERVAL refs since the last time.
+// TODO: Consider removing this completely. We should no longer be generating GlobalRefs
+// that are reclaimed as a result of GC action.
+static void gcIfManyNewRefs(JNIEnv* env)
+{
+    uint32_t totalRefs = gNumLocalRefsCreated.load(std::memory_order_relaxed)
+            + gNumDeathRefsCreated.load(std::memory_order_relaxed);
+    uint32_t collectedAtRefs = gCollectedAtRefs.load(memory_order_relaxed);
+    // A bound on the number of threads that can have incremented gNum...RefsCreated before the
+    // following check is executed. Effectively a bound on #threads. Almost any value will do.
+    static constexpr uint32_t MAX_RACING = 100000;
+
+    if (totalRefs - (collectedAtRefs + GC_INTERVAL) /* modular arithmetic! */ < MAX_RACING) {
+        // Recently passed next GC interval.
+        if (gCollectedAtRefs.compare_exchange_strong(collectedAtRefs,
+                collectedAtRefs + GC_INTERVAL, std::memory_order_relaxed)) {
+            ALOGV("Binder forcing GC at %u created refs", totalRefs);
+            env->CallStaticVoidMethod(gBinderInternalOffsets.mClass,
+                    gBinderInternalOffsets.mForceGc);
+        }  // otherwise somebody else beat us to it.
     } else {
-        ALOGV("Now have %d binder ops", old);
+        ALOGV("Now have %d binder ops", totalRefs - collectedAtRefs);
     }
 }
 
@@ -166,69 +196,93 @@
     return vm->GetEnv((void **)&env, JNI_VERSION_1_4) >= 0 ? env : NULL;
 }
 
+// Report a java.lang.Error (or subclass). This will terminate the runtime by
+// calling FatalError with a message derived from the given error.
+static void report_java_lang_error_fatal_error(JNIEnv* env, jthrowable error,
+        const char* msg)
+{
+    // Report an error: reraise the exception and ask the runtime to abort.
+
+    // Try to get the exception string. Sometimes logcat isn't available,
+    // so try to add it to the abort message.
+    std::string exc_msg = "(Unknown exception message)";
+    {
+        ScopedLocalRef<jclass> exc_class(env, env->GetObjectClass(error));
+        jmethodID method_id = env->GetMethodID(exc_class.get(), "toString",
+                "()Ljava/lang/String;");
+        ScopedLocalRef<jstring> jstr(
+                env,
+                reinterpret_cast<jstring>(
+                        env->CallObjectMethod(error, method_id)));
+        env->ExceptionClear();  // Just for good measure.
+        if (jstr.get() != nullptr) {
+            ScopedUtfChars jstr_utf(env, jstr.get());
+            if (jstr_utf.c_str() != nullptr) {
+                exc_msg = jstr_utf.c_str();
+            } else {
+                env->ExceptionClear();
+            }
+        }
+    }
+
+    env->Throw(error);
+    ALOGE("java.lang.Error thrown during binder transaction (stack trace follows) : ");
+    env->ExceptionDescribe();
+
+    std::string error_msg = base::StringPrintf(
+            "java.lang.Error thrown during binder transaction: %s",
+            exc_msg.c_str());
+    env->FatalError(error_msg.c_str());
+}
+
+// Report a java.lang.Error (or subclass). This will terminate the runtime, either by
+// the uncaught exception handler, or explicitly by calling
+// report_java_lang_error_fatal_error.
+static void report_java_lang_error(JNIEnv* env, jthrowable error, const char* msg)
+{
+    // Try to run the uncaught exception machinery.
+    jobject thread = env->CallStaticObjectMethod(gThreadDispatchOffsets.mClass,
+            gThreadDispatchOffsets.mCurrentThread);
+    if (thread != nullptr) {
+        env->CallVoidMethod(thread, gThreadDispatchOffsets.mDispatchUncaughtException,
+                error);
+        // Should not return here, unless more errors occured.
+    }
+    // Some error occurred that meant that either dispatchUncaughtException could not be
+    // called or that it had an error itself (as this should be unreachable under normal
+    // conditions). As the binder code cannot handle Errors, attempt to log the error and
+    // abort.
+    env->ExceptionClear();
+    report_java_lang_error_fatal_error(env, error, msg);
+}
+
 static void report_exception(JNIEnv* env, jthrowable excep, const char* msg)
 {
     env->ExceptionClear();
 
-    jstring tagstr = env->NewStringUTF(LOG_TAG);
-    jstring msgstr = NULL;
-    if (tagstr != NULL) {
-        msgstr = env->NewStringUTF(msg);
+    ScopedLocalRef<jstring> tagstr(env, env->NewStringUTF(LOG_TAG));
+    ScopedLocalRef<jstring> msgstr(env);
+    if (tagstr != nullptr) {
+        msgstr.reset(env->NewStringUTF(msg));
     }
 
-    if ((tagstr == NULL) || (msgstr == NULL)) {
+    if ((tagstr != nullptr) && (msgstr != nullptr)) {
+        env->CallStaticIntMethod(gLogOffsets.mClass, gLogOffsets.mLogE,
+                tagstr.get(), msgstr.get(), excep);
+        if (env->ExceptionCheck()) {
+            // Attempting to log the failure has failed.
+            ALOGW("Failed trying to log exception, msg='%s'\n", msg);
+            env->ExceptionClear();
+        }
+    } else {
         env->ExceptionClear();      /* assume exception (OOM?) was thrown */
         ALOGE("Unable to call Log.e()\n");
         ALOGE("%s", msg);
-        goto bail;
-    }
-
-    env->CallStaticIntMethod(
-        gLogOffsets.mClass, gLogOffsets.mLogE, tagstr, msgstr, excep);
-    if (env->ExceptionCheck()) {
-        /* attempting to log the failure has failed */
-        ALOGW("Failed trying to log exception, msg='%s'\n", msg);
-        env->ExceptionClear();
     }
 
     if (env->IsInstanceOf(excep, gErrorOffsets.mClass)) {
-        /*
-         * It's an Error: Reraise the exception and ask the runtime to abort.
-         */
-
-        // Try to get the exception string. Sometimes logcat isn't available,
-        // so try to add it to the abort message.
-        std::string exc_msg = "(Unknown exception message)";
-        {
-            ScopedLocalRef<jclass> exc_class(env, env->GetObjectClass(excep));
-            jmethodID method_id = env->GetMethodID(exc_class.get(),
-                                                   "toString",
-                                                   "()Ljava/lang/String;");
-            ScopedLocalRef<jstring> jstr(
-                    env,
-                    reinterpret_cast<jstring>(
-                            env->CallObjectMethod(excep, method_id)));
-            env->ExceptionClear();  // Just for good measure.
-            if (jstr.get() != nullptr) {
-                ScopedUtfChars jstr_utf(env, jstr.get());
-                exc_msg = jstr_utf.c_str();
-            }
-        }
-
-        env->Throw(excep);
-        ALOGE("java.lang.Error thrown during binder transaction (stack trace follows) : ");
-        env->ExceptionDescribe();
-
-        std::string error_msg = base::StringPrintf(
-                "java.lang.Error thrown during binder transaction: %s",
-                exc_msg.c_str());
-        env->FatalError(error_msg.c_str());
+        report_java_lang_error(env, excep, msg);
     }
-
-bail:
-    /* discard local refs created for us by VM */
-    env->DeleteLocalRef(tagstr);
-    env->DeleteLocalRef(msgstr);
 }
 
 class JavaBBinderHolder;
@@ -236,12 +290,12 @@
 class JavaBBinder : public BBinder
 {
 public:
-    JavaBBinder(JNIEnv* env, jobject object)
+    JavaBBinder(JNIEnv* env, jobject /* Java Binder */ object)
         : mVM(jnienv_to_javavm(env)), mObject(env->NewGlobalRef(object))
     {
         ALOGV("Creating JavaBBinder %p\n", this);
-        android_atomic_inc(&gNumLocalRefs);
-        incRefsCreated(env);
+        gNumLocalRefsCreated.fetch_add(1, std::memory_order_relaxed);
+        gcIfManyNewRefs(env);
     }
 
     bool    checkSubclass(const void* subclassID) const
@@ -258,7 +312,7 @@
     virtual ~JavaBBinder()
     {
         ALOGV("Destroying JavaBBinder %p\n", this);
-        android_atomic_dec(&gNumLocalRefs);
+        gNumLocalRefsDeleted.fetch_add(1, memory_order_relaxed);
         JNIEnv* env = javavm_to_jnienv(mVM);
         env->DeleteGlobalRef(mObject);
     }
@@ -280,14 +334,11 @@
             code, reinterpret_cast<jlong>(&data), reinterpret_cast<jlong>(reply), flags);
 
         if (env->ExceptionCheck()) {
-            jthrowable excep = env->ExceptionOccurred();
-            report_exception(env, excep,
+            ScopedLocalRef<jthrowable> excep(env, env->ExceptionOccurred());
+            report_exception(env, excep.get(),
                 "*** Uncaught remote exception!  "
                 "(Exceptions are not yet supported across processes.)");
             res = JNI_FALSE;
-
-            /* clean up JNI local ref -- we don't return to Java code */
-            env->DeleteLocalRef(excep);
         }
 
         // Check if the strict mode state changed while processing the
@@ -299,11 +350,9 @@
         }
 
         if (env->ExceptionCheck()) {
-            jthrowable excep = env->ExceptionOccurred();
-            report_exception(env, excep,
+            ScopedLocalRef<jthrowable> excep(env, env->ExceptionOccurred());
+            report_exception(env, excep.get(),
                 "*** Uncaught exception in onBinderStrictModePolicyChange");
-            /* clean up JNI local ref -- we don't return to Java code */
-            env->DeleteLocalRef(excep);
         }
 
         // Need to always call through the native implementation of
@@ -325,12 +374,12 @@
 
 private:
     JavaVM* const   mVM;
-    jobject const   mObject;
+    jobject const   mObject;  // GlobalRef to Java Binder
 };
 
 // ----------------------------------------------------------------------------
 
-class JavaBBinderHolder : public RefBase
+class JavaBBinderHolder
 {
 public:
     sp<JavaBBinder> get(JNIEnv* env, jobject obj)
@@ -395,8 +444,8 @@
         LOGDEATH("Adding JDR %p to DRL %p", this, list.get());
         list->add(this);
 
-        android_atomic_inc(&gNumDeathRefs);
-        incRefsCreated(env);
+        gNumDeathRefsCreated.fetch_add(1, std::memory_order_relaxed);
+        gcIfManyNewRefs(env);
     }
 
     void binderDied(const wp<IBinder>& who)
@@ -446,9 +495,8 @@
         if (mObject != NULL) {
             result = env->IsSameObject(obj, mObject);
         } else {
-            jobject me = env->NewLocalRef(mObjectWeak);
-            result = env->IsSameObject(obj, me);
-            env->DeleteLocalRef(me);
+            ScopedLocalRef<jobject> me(env, env->NewLocalRef(mObjectWeak));
+            result = env->IsSameObject(obj, me.get());
         }
         return result;
     }
@@ -477,7 +525,7 @@
     virtual ~JavaDeathRecipient()
     {
         //ALOGI("Removing death ref: recipient=%p\n", mObject);
-        android_atomic_dec(&gNumDeathRefs);
+        gNumDeathRefsDeleted.fetch_add(1, std::memory_order_relaxed);
         JNIEnv* env = javavm_to_jnienv(mVM);
         if (mObject != NULL) {
             env->DeleteGlobalRef(mObject);
@@ -489,7 +537,7 @@
 private:
     JavaVM* const mVM;
     jobject mObject;  // Initial strong ref to Java-side DeathRecipient. Cleared on binderDied().
-    jweak mObjectWeak; // weak ref to the same Java-side DeathRecipient after binderDied().
+    jweak mObjectWeak; // Weak ref to the same Java-side DeathRecipient after binderDied().
     wp<DeathRecipientList> mList;
 };
 
@@ -554,21 +602,40 @@
 
 namespace android {
 
-static void proxy_cleanup(const void* id, void* obj, void* cleanupCookie)
-{
-    android_atomic_dec(&gNumProxyRefs);
-    JNIEnv* env = javavm_to_jnienv((JavaVM*)cleanupCookie);
-    env->DeleteGlobalRef((jobject)obj);
+// We aggregate native pointer fields for BinderProxy in a single object to allow
+// management with a single NativeAllocationRegistry, and to reduce the number of JNI
+// Java field accesses. This costs us some extra indirections here.
+struct BinderProxyNativeData {
+    // Both fields are constant and not null once javaObjectForIBinder returns this as
+    // part of a BinderProxy.
+
+    // The native IBinder proxied by this BinderProxy.
+    sp<IBinder> mObject;
+
+    // Death recipients for mObject. Reference counted only because DeathRecipients
+    // hold a weak reference that can be temporarily promoted.
+    sp<DeathRecipientList> mOrgue;  // Death recipients for mObject.
+};
+
+BinderProxyNativeData* getBPNativeData(JNIEnv* env, jobject obj) {
+    return (BinderProxyNativeData *) env->GetLongField(obj, gBinderProxyOffsets.mNativeData);
 }
 
 static Mutex gProxyLock;
 
+// We may cache a single BinderProxyNativeData node to avoid repeat allocation.
+// All fields are null. Protected by gProxyLock.
+static BinderProxyNativeData *gNativeDataCache;
+
+// If the argument is a JavaBBinder, return the Java object that was used to create it.
+// Otherwise return a BinderProxy for the IBinder. If a previous call was passed the
+// same IBinder, and the original BinderProxy is still alive, return the same BinderProxy.
 jobject javaObjectForIBinder(JNIEnv* env, const sp<IBinder>& val)
 {
     if (val == NULL) return NULL;
 
     if (val->checkSubclass(&gBinderOffsets)) {
-        // One of our own!
+        // It's a JavaBBinder created by ibinderForJavaObject. Already has Java object.
         jobject object = static_cast<JavaBBinder*>(val.get())->object();
         LOGDEATH("objectForBinder %p: it's our own %p!\n", val.get(), object);
         return object;
@@ -578,42 +645,31 @@
     // looking/creation/destruction of Java proxies for native Binder proxies.
     AutoMutex _l(gProxyLock);
 
-    // Someone else's...  do we know about it?
-    jobject object = (jobject)val->findObject(&gBinderProxyOffsets);
-    if (object != NULL) {
-        jobject res = jniGetReferent(env, object);
-        if (res != NULL) {
-            ALOGV("objectForBinder %p: found existing %p!\n", val.get(), res);
-            return res;
-        }
-        LOGDEATH("Proxy object %p of IBinder %p no longer in working set!!!", object, val.get());
-        android_atomic_dec(&gNumProxyRefs);
-        val->detachObject(&gBinderProxyOffsets);
-        env->DeleteGlobalRef(object);
+    BinderProxyNativeData* nativeData = gNativeDataCache;
+    if (nativeData == nullptr) {
+        nativeData = new BinderProxyNativeData();
     }
-
-    object = env->NewObject(gBinderProxyOffsets.mClass, gBinderProxyOffsets.mConstructor);
-    if (object != NULL) {
-        LOGDEATH("objectForBinder %p: created new proxy %p !\n", val.get(), object);
-        // The proxy holds a reference to the native object.
-        env->SetLongField(object, gBinderProxyOffsets.mObject, (jlong)val.get());
-        val->incStrong((void*)javaObjectForIBinder);
-
-        // The native object needs to hold a weak reference back to the
-        // proxy, so we can retrieve the same proxy if it is still active.
-        jobject refObject = env->NewGlobalRef(
-                env->GetObjectField(object, gBinderProxyOffsets.mSelf));
-        val->attachObject(&gBinderProxyOffsets, refObject,
-                jnienv_to_javavm(env), proxy_cleanup);
-
-        // Also remember the death recipients registered on this proxy
-        sp<DeathRecipientList> drl = new DeathRecipientList;
-        drl->incStrong((void*)javaObjectForIBinder);
-        env->SetLongField(object, gBinderProxyOffsets.mOrgue, reinterpret_cast<jlong>(drl.get()));
-
-        // Note that a new object reference has been created.
-        android_atomic_inc(&gNumProxyRefs);
-        incRefsCreated(env);
+    // gNativeDataCache is now logically empty.
+    jobject object = env->CallStaticObjectMethod(gBinderProxyOffsets.mClass,
+            gBinderProxyOffsets.mGetInstance, (jlong) nativeData, (jlong) val.get());
+    if (env->ExceptionCheck()) {
+        gNativeDataCache = nativeData;
+        return NULL;
+    }
+    BinderProxyNativeData* actualNativeData = getBPNativeData(env, object);
+    if (actualNativeData == nativeData) {
+        // New BinderProxy; we still have exclusive access.
+        nativeData->mOrgue = new DeathRecipientList;
+        nativeData->mObject = val;
+        gNativeDataCache = nullptr;
+        ++gNumProxies;
+        if (++gNumProxies >= gProxiesWarned + PROXY_WARN_INTERVAL) {
+            ALOGW("Unexpectedly many live BinderProxies: %d\n", gNumProxies);
+            gProxiesWarned = gNumProxies;
+        }
+    } else {
+        // nativeData wasn't used. Reuse it the next time.
+        gNativeDataCache = nativeData;
     }
 
     return object;
@@ -623,15 +679,16 @@
 {
     if (obj == NULL) return NULL;
 
+    // Instance of Binder?
     if (env->IsInstanceOf(obj, gBinderOffsets.mClass)) {
         JavaBBinderHolder* jbh = (JavaBBinderHolder*)
             env->GetLongField(obj, gBinderOffsets.mObject);
-        return jbh != NULL ? jbh->get(env, obj) : NULL;
+        return jbh->get(env, obj);
     }
 
+    // Instance of BinderProxy?
     if (env->IsInstanceOf(obj, gBinderProxyOffsets.mClass)) {
-        return (IBinder*)
-            env->GetLongField(obj, gBinderProxyOffsets.mObject);
+        return getBPNativeData(env, obj)->mObject;
     }
 
     ALOGW("ibinderForJavaObject: %p is not a Binder object", obj);
@@ -824,35 +881,21 @@
     IPCThreadState::self()->flushCommands();
 }
 
-static void android_os_Binder_init(JNIEnv* env, jobject obj)
+static jlong android_os_Binder_getNativeBBinderHolder(JNIEnv* env, jobject clazz)
 {
     JavaBBinderHolder* jbh = new JavaBBinderHolder();
-    if (jbh == NULL) {
-        jniThrowException(env, "java/lang/OutOfMemoryError", NULL);
-        return;
-    }
-    ALOGV("Java Binder %p: acquiring first ref on holder %p", obj, jbh);
-    jbh->incStrong((void*)android_os_Binder_init);
-    env->SetLongField(obj, gBinderOffsets.mObject, (jlong)jbh);
+    return (jlong) jbh;
 }
 
-static void android_os_Binder_destroyBinder(JNIEnv* env, jobject obj)
+static void Binder_destroy(void* rawJbh)
 {
-    JavaBBinderHolder* jbh = (JavaBBinderHolder*)
-        env->GetLongField(obj, gBinderOffsets.mObject);
-    if (jbh != NULL) {
-        env->SetLongField(obj, gBinderOffsets.mObject, 0);
-        ALOGV("Java Binder %p: removing ref on holder %p", obj, jbh);
-        jbh->decStrong((void*)android_os_Binder_init);
-    } else {
-        // Encountering an uninitialized binder is harmless.  All it means is that
-        // the Binder was only partially initialized when its finalizer ran and called
-        // destroyBinder().  The Binder could be partially initialized for several reasons.
-        // For example, a Binder subclass constructor might have thrown an exception before
-        // it could delegate to its superclass's constructor.  Consequently init() would
-        // not have been called and the holder pointer would remain NULL.
-        ALOGV("Java Binder %p: ignoring uninitialized binder", obj);
-    }
+    JavaBBinderHolder* jbh = (JavaBBinderHolder*) rawJbh;
+    ALOGV("Java Binder: deleting holder %p", jbh);
+    delete jbh;
+}
+
+JNIEXPORT jlong JNICALL android_os_Binder_getNativeFinalizer(JNIEnv*, jclass) {
+    return (jlong) Binder_destroy;
 }
 
 static void android_os_Binder_blockUntilThreadAvailable(JNIEnv* env, jobject clazz)
@@ -871,8 +914,8 @@
     { "setThreadStrictModePolicy", "(I)V", (void*)android_os_Binder_setThreadStrictModePolicy },
     { "getThreadStrictModePolicy", "()I", (void*)android_os_Binder_getThreadStrictModePolicy },
     { "flushPendingCommands", "()V", (void*)android_os_Binder_flushPendingCommands },
-    { "init", "()V", (void*)android_os_Binder_init },
-    { "destroyBinder", "()V", (void*)android_os_Binder_destroyBinder },
+    { "getNativeBBinderHolder", "()J", (void*)android_os_Binder_getNativeBBinderHolder },
+    { "getNativeFinalizer", "()J", (void*)android_os_Binder_getNativeFinalizer },
     { "blockUntilThreadAvailable", "()V", (void*)android_os_Binder_blockUntilThreadAvailable }
 };
 
@@ -899,17 +942,18 @@
 
 jint android_os_Debug_getLocalObjectCount(JNIEnv* env, jobject clazz)
 {
-    return gNumLocalRefs;
+    return gNumLocalRefsCreated - gNumLocalRefsDeleted;
 }
 
 jint android_os_Debug_getProxyObjectCount(JNIEnv* env, jobject clazz)
 {
-    return gNumProxyRefs;
+    AutoMutex _l(gProxyLock);
+    return gNumProxies;
 }
 
 jint android_os_Debug_getDeathObjectCount(JNIEnv* env, jobject clazz)
 {
-    return gNumDeathRefs;
+    return gNumDeathRefsCreated - gNumDeathRefsDeleted;
 }
 
 }
@@ -944,8 +988,8 @@
 
 static void android_os_BinderInternal_handleGc(JNIEnv* env, jobject clazz)
 {
-    ALOGV("Gc has executed, clearing binder ops");
-    android_atomic_and(0, &gNumRefsCreated);
+    ALOGV("Gc has executed, updating Refs count at GC");
+    gCollectedAtRefs = gNumLocalRefsCreated + gNumDeathRefsCreated;
 }
 
 // ----------------------------------------------------------------------------
@@ -979,8 +1023,7 @@
 
 static jboolean android_os_BinderProxy_pingBinder(JNIEnv* env, jobject obj)
 {
-    IBinder* target = (IBinder*)
-        env->GetLongField(obj, gBinderProxyOffsets.mObject);
+    IBinder* target = getBPNativeData(env, obj)->mObject.get();
     if (target == NULL) {
         return JNI_FALSE;
     }
@@ -990,7 +1033,7 @@
 
 static jstring android_os_BinderProxy_getInterfaceDescriptor(JNIEnv* env, jobject obj)
 {
-    IBinder* target = (IBinder*) env->GetLongField(obj, gBinderProxyOffsets.mObject);
+    IBinder* target = getBPNativeData(env, obj)->mObject.get();
     if (target != NULL) {
         const String16& desc = target->getInterfaceDescriptor();
         return env->NewString(reinterpret_cast<const jchar*>(desc.string()),
@@ -1003,8 +1046,7 @@
 
 static jboolean android_os_BinderProxy_isBinderAlive(JNIEnv* env, jobject obj)
 {
-    IBinder* target = (IBinder*)
-        env->GetLongField(obj, gBinderProxyOffsets.mObject);
+    IBinder* target = getBPNativeData(env, obj)->mObject.get();
     if (target == NULL) {
         return JNI_FALSE;
     }
@@ -1126,8 +1168,7 @@
         return JNI_FALSE;
     }
 
-    IBinder* target = (IBinder*)
-        env->GetLongField(obj, gBinderProxyOffsets.mObject);
+    IBinder* target = getBPNativeData(env, obj)->mObject.get();
     if (target == NULL) {
         jniThrowException(env, "java/lang/IllegalStateException", "Binder has been finalized!");
         return JNI_FALSE;
@@ -1177,18 +1218,13 @@
         return;
     }
 
-    IBinder* target = (IBinder*)
-        env->GetLongField(obj, gBinderProxyOffsets.mObject);
-    if (target == NULL) {
-        ALOGW("Binder has been finalized when calling linkToDeath() with recip=%p)\n", recipient);
-        assert(false);
-    }
+    BinderProxyNativeData *nd = getBPNativeData(env, obj);
+    IBinder* target = nd->mObject.get();
 
     LOGDEATH("linkToDeath: binder=%p recipient=%p\n", target, recipient);
 
     if (!target->localBinder()) {
-        DeathRecipientList* list = (DeathRecipientList*)
-                env->GetLongField(obj, gBinderProxyOffsets.mOrgue);
+        DeathRecipientList* list = nd->mOrgue.get();
         sp<JavaDeathRecipient> jdr = new JavaDeathRecipient(env, recipient, list);
         status_t err = target->linkToDeath(jdr, NULL, flags);
         if (err != NO_ERROR) {
@@ -1209,8 +1245,8 @@
         return res;
     }
 
-    IBinder* target = (IBinder*)
-        env->GetLongField(obj, gBinderProxyOffsets.mObject);
+    BinderProxyNativeData* nd = getBPNativeData(env, obj);
+    IBinder* target = nd->mObject.get();
     if (target == NULL) {
         ALOGW("Binder has been finalized when calling linkToDeath() with recip=%p)\n", recipient);
         return JNI_FALSE;
@@ -1222,8 +1258,7 @@
         status_t err = NAME_NOT_FOUND;
 
         // If we find the matching recipient, proceed to unlink using that
-        DeathRecipientList* list = (DeathRecipientList*)
-                env->GetLongField(obj, gBinderProxyOffsets.mOrgue);
+        DeathRecipientList* list = nd->mOrgue.get();
         sp<JavaDeathRecipient> origJDR = list->find(recipient);
         LOGDEATH("   unlink found list %p and JDR %p", list, origJDR.get());
         if (origJDR != NULL) {
@@ -1249,25 +1284,21 @@
     return res;
 }
 
-static void android_os_BinderProxy_destroy(JNIEnv* env, jobject obj)
+static void BinderProxy_destroy(void* rawNativeData)
 {
     // Don't race with construction/initialization
     AutoMutex _l(gProxyLock);
 
-    IBinder* b = (IBinder*)
-            env->GetLongField(obj, gBinderProxyOffsets.mObject);
-    DeathRecipientList* drl = (DeathRecipientList*)
-            env->GetLongField(obj, gBinderProxyOffsets.mOrgue);
-
-    LOGDEATH("Destroying BinderProxy %p: binder=%p drl=%p\n", obj, b, drl);
-    if (b != nullptr) {
-        env->SetLongField(obj, gBinderProxyOffsets.mObject, 0);
-        env->SetLongField(obj, gBinderProxyOffsets.mOrgue, 0);
-        drl->decStrong((void*)javaObjectForIBinder);
-        b->decStrong((void*)javaObjectForIBinder);
-    }
-
+    BinderProxyNativeData * nativeData = (BinderProxyNativeData *) rawNativeData;
+    LOGDEATH("Destroying BinderProxy: binder=%p drl=%p\n",
+            nativeData->mObject.get(), nativeData->mOrgue.get());
+    delete nativeData;
     IPCThreadState::self()->flushCommands();
+    --gNumProxies;
+}
+
+JNIEXPORT jlong JNICALL android_os_BinderProxy_getNativeFinalizer(JNIEnv*, jclass) {
+    return (jlong) BinderProxy_destroy;
 }
 
 // ----------------------------------------------------------------------------
@@ -1280,7 +1311,7 @@
     {"transactNative",      "(ILandroid/os/Parcel;Landroid/os/Parcel;I)Z", (void*)android_os_BinderProxy_transact},
     {"linkToDeath",         "(Landroid/os/IBinder$DeathRecipient;I)V", (void*)android_os_BinderProxy_linkToDeath},
     {"unlinkToDeath",       "(Landroid/os/IBinder$DeathRecipient;I)Z", (void*)android_os_BinderProxy_unlinkToDeath},
-    {"destroy",             "()V", (void*)android_os_BinderProxy_destroy},
+    {"getNativeFinalizer",  "()J", (void*)android_os_BinderProxy_getNativeFinalizer},
 };
 
 const char* const kBinderProxyPathName = "android/os/BinderProxy";
@@ -1292,14 +1323,11 @@
 
     clazz = FindClassOrDie(env, kBinderProxyPathName);
     gBinderProxyOffsets.mClass = MakeGlobalRefOrDie(env, clazz);
-    gBinderProxyOffsets.mConstructor = GetMethodIDOrDie(env, clazz, "<init>", "()V");
+    gBinderProxyOffsets.mGetInstance = GetStaticMethodIDOrDie(env, clazz, "getInstance",
+            "(JJ)Landroid/os/BinderProxy;");
     gBinderProxyOffsets.mSendDeathNotice = GetStaticMethodIDOrDie(env, clazz, "sendDeathNotice",
             "(Landroid/os/IBinder$DeathRecipient;)V");
-
-    gBinderProxyOffsets.mObject = GetFieldIDOrDie(env, clazz, "mObject", "J");
-    gBinderProxyOffsets.mSelf = GetFieldIDOrDie(env, clazz, "mSelf",
-                                                "Ljava/lang/ref/WeakReference;");
-    gBinderProxyOffsets.mOrgue = GetFieldIDOrDie(env, clazz, "mOrgue", "J");
+    gBinderProxyOffsets.mNativeData = GetFieldIDOrDie(env, clazz, "mNativeData", "J");
 
     clazz = FindClassOrDie(env, "java/lang/Class");
     gClassOffsets.mGetName = GetMethodIDOrDie(env, clazz, "getName", "()Ljava/lang/String;");
@@ -1337,5 +1365,12 @@
     gStrictModeCallbackOffsets.mCallback = GetStaticMethodIDOrDie(env, clazz,
             "onBinderStrictModePolicyChange", "(I)V");
 
+    clazz = FindClassOrDie(env, "java/lang/Thread");
+    gThreadDispatchOffsets.mClass = MakeGlobalRefOrDie(env, clazz);
+    gThreadDispatchOffsets.mDispatchUncaughtException = GetMethodIDOrDie(env, clazz,
+            "dispatchUncaughtException", "(Ljava/lang/Throwable;)V");
+    gThreadDispatchOffsets.mCurrentThread = GetStaticMethodIDOrDie(env, clazz, "currentThread",
+            "()Ljava/lang/Thread;");
+
     return 0;
 }
diff --git a/data/etc/OWNERS b/data/etc/OWNERS
new file mode 100644
index 0000000..f7a3e1a
--- /dev/null
+++ b/data/etc/OWNERS
@@ -0,0 +1,7 @@
+per-file privapp-permissions-platform.xml = bpoiesz@google.com
+per-file privapp-permissions-platform.xml = fkupolov@google.com
+per-file privapp-permissions-platform.xml = hackbod@android.com
+per-file privapp-permissions-platform.xml = jsharkey@android.com
+per-file privapp-permissions-platform.xml = svetoslavganov@google.com
+per-file privapp-permissions-platform.xml = toddke@google.com
+per-file privapp-permissions-platform.xml = yamasani@google.com
diff --git a/packages/DefaultContainerService/src/com/android/defcontainer/DefaultContainerService.java b/packages/DefaultContainerService/src/com/android/defcontainer/DefaultContainerService.java
index 9347877..3800e6f 100644
--- a/packages/DefaultContainerService/src/com/android/defcontainer/DefaultContainerService.java
+++ b/packages/DefaultContainerService/src/com/android/defcontainer/DefaultContainerService.java
@@ -213,27 +213,6 @@
         }
 
         @Override
-        public long calculateDirectorySize(String path) throws RemoteException {
-            Process.setThreadPriority(Process.THREAD_PRIORITY_BACKGROUND);
-
-            final File dir = Environment.maybeTranslateEmulatedPathToInternal(new File(path));
-            if (dir.exists() && dir.isDirectory()) {
-                final String targetPath = dir.getAbsolutePath();
-                return MeasurementUtils.measureDirectory(targetPath);
-            } else {
-                return 0L;
-            }
-        }
-
-        @Override
-        public long[] getFileSystemStats(String path) {
-            Process.setThreadPriority(Process.THREAD_PRIORITY_BACKGROUND);
-
-            final File file = new File(path);
-            return new long[] { file.getTotalSpace(), file.getUsableSpace() };
-        }
-
-        @Override
         public void clearDirectory(String path) throws RemoteException {
             Process.setThreadPriority(Process.THREAD_PRIORITY_BACKGROUND);
 
diff --git a/packages/SettingsLib/src/com/android/settingslib/bluetooth/PanProfile.java b/packages/SettingsLib/src/com/android/settingslib/bluetooth/PanProfile.java
index 7bda231..3299cb2 100755
--- a/packages/SettingsLib/src/com/android/settingslib/bluetooth/PanProfile.java
+++ b/packages/SettingsLib/src/com/android/settingslib/bluetooth/PanProfile.java
@@ -32,7 +32,7 @@
 /**
  * PanProfile handles Bluetooth PAN profile (NAP and PANU).
  */
-public final class PanProfile implements LocalBluetoothProfile {
+public class PanProfile implements LocalBluetoothProfile {
     private static final String TAG = "PanProfile";
     private static boolean V = true;
 
diff --git a/packages/SettingsLib/tests/robotests/src/com/android/settingslib/bluetooth/CachedBluetoothDeviceTest.java b/packages/SettingsLib/tests/robotests/src/com/android/settingslib/bluetooth/CachedBluetoothDeviceTest.java
index e2ebbeb..9ac08f9 100644
--- a/packages/SettingsLib/tests/robotests/src/com/android/settingslib/bluetooth/CachedBluetoothDeviceTest.java
+++ b/packages/SettingsLib/tests/robotests/src/com/android/settingslib/bluetooth/CachedBluetoothDeviceTest.java
@@ -51,7 +51,7 @@
     @Mock
     private A2dpProfile mA2dpProfile;
     @Mock
-    private HidProfile mHidProfile;
+    private PanProfile mPanProfile;
     @Mock
     private BluetoothDevice mDevice;
     private CachedBluetoothDevice mCachedDevice;
@@ -65,7 +65,7 @@
         when(mAdapter.getBluetoothState()).thenReturn(BluetoothAdapter.STATE_ON);
         when(mHfpProfile.isProfileReady()).thenReturn(true);
         when(mA2dpProfile.isProfileReady()).thenReturn(true);
-        when(mHidProfile.isProfileReady()).thenReturn(true);
+        when(mPanProfile.isProfileReady()).thenReturn(true);
         mCachedDevice = spy(
                 new CachedBluetoothDevice(mContext, mAdapter, mProfileManager, mDevice));
         doAnswer((invocation) -> mBatteryLevel).when(mCachedDevice).getBatteryLevel();
@@ -83,37 +83,37 @@
     @Test
     public void testGetConnectionSummary_testSingleProfileConnectDisconnect() {
         // Test without battery level
-        // Set HID profile to be connected and test connection state summary
-        mCachedDevice.onProfileStateChanged(mHidProfile, BluetoothProfile.STATE_CONNECTED);
+        // Set PAN profile to be connected and test connection state summary
+        mCachedDevice.onProfileStateChanged(mPanProfile, BluetoothProfile.STATE_CONNECTED);
         assertThat(mCachedDevice.getConnectionSummary()).isEqualTo(mContext.getString(
                 R.string.bluetooth_connected));
 
-        // Set HID profile to be disconnected and test connection state summary
-        mCachedDevice.onProfileStateChanged(mHidProfile, BluetoothProfile.STATE_DISCONNECTED);
+        // Set PAN profile to be disconnected and test connection state summary
+        mCachedDevice.onProfileStateChanged(mPanProfile, BluetoothProfile.STATE_DISCONNECTED);
         assertThat(mCachedDevice.getConnectionSummary()).isNull();
 
         // Test with battery level
         mBatteryLevel = 10;
-        // Set HID profile to be connected and test connection state summary
-        mCachedDevice.onProfileStateChanged(mHidProfile, BluetoothProfile.STATE_CONNECTED);
+        // Set PAN profile to be connected and test connection state summary
+        mCachedDevice.onProfileStateChanged(mPanProfile, BluetoothProfile.STATE_CONNECTED);
         assertThat(mCachedDevice.getConnectionSummary()).isEqualTo(mContext.getString(
                 R.string.bluetooth_connected_battery_level,
                 com.android.settingslib.Utils.formatPercentage(mBatteryLevel)));
 
-        // Set HID profile to be disconnected and test connection state summary
-        mCachedDevice.onProfileStateChanged(mHidProfile, BluetoothProfile.STATE_DISCONNECTED);
+        // Set PAN profile to be disconnected and test connection state summary
+        mCachedDevice.onProfileStateChanged(mPanProfile, BluetoothProfile.STATE_DISCONNECTED);
         assertThat(mCachedDevice.getConnectionSummary()).isNull();
 
         // Test with BluetoothDevice.BATTERY_LEVEL_UNKNOWN battery level
         mBatteryLevel = BluetoothDevice.BATTERY_LEVEL_UNKNOWN;
 
-        // Set HID profile to be connected and test connection state summary
-        mCachedDevice.onProfileStateChanged(mHidProfile, BluetoothProfile.STATE_CONNECTED);
+        // Set PAN profile to be connected and test connection state summary
+        mCachedDevice.onProfileStateChanged(mPanProfile, BluetoothProfile.STATE_CONNECTED);
         assertThat(mCachedDevice.getConnectionSummary()).isEqualTo(mContext.getString(
                 R.string.bluetooth_connected));
 
-        // Set HID profile to be disconnected and test connection state summary
-        mCachedDevice.onProfileStateChanged(mHidProfile, BluetoothProfile.STATE_DISCONNECTED);
+        // Set PAN profile to be disconnected and test connection state summary
+        mCachedDevice.onProfileStateChanged(mPanProfile, BluetoothProfile.STATE_DISCONNECTED);
         assertThat(mCachedDevice.getConnectionSummary()).isNull();
     }
 
@@ -121,10 +121,10 @@
     public void testGetConnectionSummary_testMultipleProfileConnectDisconnect() {
         mBatteryLevel = 10;
 
-        // Set HFP, A2DP and HID profile to be connected and test connection state summary
+        // Set HFP, A2DP and PAN profile to be connected and test connection state summary
         mCachedDevice.onProfileStateChanged(mHfpProfile, BluetoothProfile.STATE_CONNECTED);
         mCachedDevice.onProfileStateChanged(mA2dpProfile, BluetoothProfile.STATE_CONNECTED);
-        mCachedDevice.onProfileStateChanged(mHidProfile, BluetoothProfile.STATE_CONNECTED);
+        mCachedDevice.onProfileStateChanged(mPanProfile, BluetoothProfile.STATE_CONNECTED);
         assertThat(mCachedDevice.getConnectionSummary()).isEqualTo(mContext.getString(
                 R.string.bluetooth_connected_battery_level,
                 com.android.settingslib.Utils.formatPercentage(mBatteryLevel)));
@@ -149,7 +149,7 @@
                 com.android.settingslib.Utils.formatPercentage(mBatteryLevel)));
 
         // Disconnect all profiles and test connection state summary
-        mCachedDevice.onProfileStateChanged(mHidProfile, BluetoothProfile.STATE_DISCONNECTED);
+        mCachedDevice.onProfileStateChanged(mPanProfile, BluetoothProfile.STATE_DISCONNECTED);
         assertThat(mCachedDevice.getConnectionSummary()).isNull();
     }
 }
diff --git a/packages/SystemUI/res/layout/qs_tile_label.xml b/packages/SystemUI/res/layout/qs_tile_label.xml
index 35a9477..b138df0 100644
--- a/packages/SystemUI/res/layout/qs_tile_label.xml
+++ b/packages/SystemUI/res/layout/qs_tile_label.xml
@@ -63,7 +63,8 @@
             android:layout_width="18dp"
             android:layout_height="match_parent"
             android:src="@drawable/qs_dual_tile_caret"
-            android:tint="?android:attr/textColorPrimary" />
+            android:tint="?android:attr/textColorPrimary"
+            android:visibility="gone" />
     </LinearLayout>
 
     <TextView
diff --git a/proto/Android.bp b/proto/Android.bp
new file mode 100644
index 0000000..95f453c
--- /dev/null
+++ b/proto/Android.bp
@@ -0,0 +1,17 @@
+java_library_static {
+    name: "framework-protos",
+    host_supported: true,
+    proto: {
+        type: "nano",
+    },
+    srcs: ["src/**/*.proto"],
+    no_framework_libs: true,
+    target: {
+        android: {
+            jarjar_rules: "jarjar-rules.txt",
+        },
+        host: {
+            static_libs: ["libprotobuf-java-nano"],
+        },
+    },
+}
diff --git a/proto/Android.mk b/proto/Android.mk
deleted file mode 100644
index 1c03d16..0000000
--- a/proto/Android.mk
+++ /dev/null
@@ -1,33 +0,0 @@
-LOCAL_PATH:= $(call my-dir)
-
-include $(CLEAR_VARS)
-
-LOCAL_MODULE := framework-protos
-
-LOCAL_PROTOC_OPTIMIZE_TYPE := nano
-LOCAL_SRC_FILES:= $(call all-proto-files-under, src)
-LOCAL_JARJAR_RULES := $(LOCAL_PATH)/jarjar-rules.txt
-
-LOCAL_NO_STANDARD_LIBRARIES := true
-LOCAL_JAVA_LIBRARIES := core-oj core-libart
-
-LOCAL_ADDITIONAL_DEPENDENCIES := $(LOCAL_PATH)/Android.mk $(LOCAL_PATH)/jarjar-rules.txt
-
-include $(BUILD_STATIC_JAVA_LIBRARY)
-
-# Host-side version of framework-protos
-# ============================================================
-include $(CLEAR_VARS)
-
-LOCAL_MODULE := host-framework-protos
-LOCAL_MODULE_TAGS := optional
-
-LOCAL_PROTOC_OPTIMIZE_TYPE := nano
-LOCAL_SRC_FILES:= $(call all-proto-files-under, src)
-
-LOCAL_NO_STANDARD_LIBRARIES := true
-LOCAL_STATIC_JAVA_LIBRARIES := host-libprotobuf-java-nano
-
-LOCAL_ADDITIONAL_DEPENDENCIES := $(LOCAL_PATH)/Android.mk $(LOCAL_PATH)/jarjar-rules.txt
-
-include $(BUILD_HOST_JAVA_LIBRARY)
\ No newline at end of file
diff --git a/services/core/java/com/android/server/ConnectivityService.java b/services/core/java/com/android/server/ConnectivityService.java
index 5c11100..25c96d1 100644
--- a/services/core/java/com/android/server/ConnectivityService.java
+++ b/services/core/java/com/android/server/ConnectivityService.java
@@ -71,7 +71,6 @@
 import android.net.RouteInfo;
 import android.net.UidRange;
 import android.net.Uri;
-import android.net.metrics.DefaultNetworkEvent;
 import android.net.metrics.IpConnectivityLog;
 import android.net.metrics.NetworkEvent;
 import android.net.util.MultinetworkPolicyTracker;
@@ -129,6 +128,7 @@
 import com.android.server.LocalServices;
 import com.android.server.am.BatteryStatsService;
 import com.android.server.connectivity.DataConnectionStats;
+import com.android.server.connectivity.IpConnectivityMetrics;
 import com.android.server.connectivity.KeepaliveTracker;
 import com.android.server.connectivity.LingerMonitor;
 import com.android.server.connectivity.MockableSystemProperties;
@@ -2283,7 +2283,7 @@
                 // Let rematchAllNetworksAndRequests() below record a new default network event
                 // if there is a fallback. Taken together, the two form a X -> 0, 0 -> Y sequence
                 // whose timestamps tell how long it takes to recover a default network.
-                logDefaultNetworkEvent(null, nai);
+                metricsLogger().defaultNetworkMetrics().logDefaultNetworkEvent(null, nai);
             }
             notifyIfacesChangedForNetworkStats();
             // TODO - we shouldn't send CALLBACK_LOST to requests that can be satisfied
@@ -5012,7 +5012,8 @@
             // Notify system services that this network is up.
             makeDefault(newNetwork);
             // Log 0 -> X and Y -> X default network transitions, where X is the new default.
-            logDefaultNetworkEvent(newNetwork, oldDefaultNetwork);
+            metricsLogger().defaultNetworkMetrics().logDefaultNetworkEvent(
+                    newNetwork, oldDefaultNetwork);
             // Have a new default network, release the transition wakelock in
             scheduleReleaseNetworkTransitionWakelock();
         }
@@ -5571,25 +5572,10 @@
         return ServiceManager.checkService(name) != null;
     }
 
-    private void logDefaultNetworkEvent(NetworkAgentInfo newNai, NetworkAgentInfo prevNai) {
-        int newNetid = NETID_UNSET;
-        int prevNetid = NETID_UNSET;
-        int[] transports = new int[0];
-        boolean hadIPv4 = false;
-        boolean hadIPv6 = false;
-
-        if (newNai != null) {
-            newNetid = newNai.network.netId;
-            transports = newNai.networkCapabilities.getTransportTypes();
-        }
-        if (prevNai != null) {
-            prevNetid = prevNai.network.netId;
-            final LinkProperties lp = prevNai.linkProperties;
-            hadIPv4 = lp.hasIPv4Address() && lp.hasIPv4DefaultRoute();
-            hadIPv6 = lp.hasGlobalIPv6Address() && lp.hasIPv6DefaultRoute();
-        }
-
-        mMetricsLog.log(new DefaultNetworkEvent(newNetid, transports, prevNetid, hadIPv4, hadIPv6));
+    @VisibleForTesting
+    protected IpConnectivityMetrics.Logger metricsLogger() {
+        return checkNotNull(LocalServices.getService(IpConnectivityMetrics.Logger.class),
+                "no IpConnectivityMetrics service");
     }
 
     private void logNetworkEvent(NetworkAgentInfo nai, int evtype) {
diff --git a/services/core/java/com/android/server/InputMethodManagerService.java b/services/core/java/com/android/server/InputMethodManagerService.java
index 192fa3a..6339c9e 100644
--- a/services/core/java/com/android/server/InputMethodManagerService.java
+++ b/services/core/java/com/android/server/InputMethodManagerService.java
@@ -1447,7 +1447,9 @@
                 broadcastFilter.addAction(Intent.ACTION_LOCALE_CHANGED);
                 mContext.registerReceiver(new ImmsBroadcastReceiver(), broadcastFilter);
 
-                buildInputMethodListLocked(true /* resetDefaultEnabledIme */);
+                final String defaultImiId = mSettings.getSelectedInputMethod();
+                final boolean imeSelectedOnBoot = !TextUtils.isEmpty(defaultImiId);
+                buildInputMethodListLocked(!imeSelectedOnBoot /* resetDefaultEnabledIme */);
                 resetDefaultImeLocked(mContext);
                 updateFromSettingsLocked(true);
                 InputMethodUtils.setNonSelectedSystemImesDisabledUntilUsed(mIPackageManager,
diff --git a/services/core/java/com/android/server/IpSecService.java b/services/core/java/com/android/server/IpSecService.java
index a139ac4..1154fbe 100644
--- a/services/core/java/com/android/server/IpSecService.java
+++ b/services/core/java/com/android/server/IpSecService.java
@@ -944,13 +944,13 @@
                                 (c.getNetwork() != null) ? c.getNetwork().getNetworkHandle() : 0,
                                 spi,
                                 (auth != null) ? auth.getName() : "",
-                                (auth != null) ? auth.getKey() : null,
+                                (auth != null) ? auth.getKey() : new byte[] {},
                                 (auth != null) ? auth.getTruncationLengthBits() : 0,
                                 (crypt != null) ? crypt.getName() : "",
-                                (crypt != null) ? crypt.getKey() : null,
+                                (crypt != null) ? crypt.getKey() : new byte[] {},
                                 (crypt != null) ? crypt.getTruncationLengthBits() : 0,
                                 (authCrypt != null) ? authCrypt.getName() : "",
-                                (authCrypt != null) ? authCrypt.getKey() : null,
+                                (authCrypt != null) ? authCrypt.getKey() : new byte[] {},
                                 (authCrypt != null) ? authCrypt.getTruncationLengthBits() : 0,
                                 encapType,
                                 encapLocalPort,
diff --git a/services/core/java/com/android/server/accounts/AccountManagerService.java b/services/core/java/com/android/server/accounts/AccountManagerService.java
index f82eb1f..86ce12e 100644
--- a/services/core/java/com/android/server/accounts/AccountManagerService.java
+++ b/services/core/java/com/android/server/accounts/AccountManagerService.java
@@ -5068,8 +5068,16 @@
                 logStatement.bindLong(4, callingUid);
                 logStatement.bindString(5, tableName);
                 logStatement.bindLong(6, userDebugDbInsertionPoint);
-                logStatement.execute();
-                logStatement.clearBindings();
+                try {
+                    logStatement.execute();
+                } catch (IllegalStateException e) {
+                    // Guard against crash, DB can already be closed
+                    // since this statement is executed on a handler thread
+                    Slog.w(TAG, "Failed to insert a log record. accountId=" + accountId
+                            + " action=" + action + " tableName=" + tableName + " Error: " + e);
+                } finally {
+                    logStatement.clearBindings();
+                }
             }
         }
 
diff --git a/services/core/java/com/android/server/connectivity/DefaultNetworkMetrics.java b/services/core/java/com/android/server/connectivity/DefaultNetworkMetrics.java
new file mode 100644
index 0000000..8981db1
--- /dev/null
+++ b/services/core/java/com/android/server/connectivity/DefaultNetworkMetrics.java
@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.connectivity;
+
+import android.net.LinkProperties;
+import android.net.metrics.DefaultNetworkEvent;
+import android.net.metrics.IpConnectivityLog;
+
+import com.android.internal.annotations.GuardedBy;
+import com.android.server.connectivity.metrics.nano.IpConnectivityLogClass.IpConnectivityEvent;
+
+import java.io.PrintWriter;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Tracks events related to the default network for the purpose of default network metrics.
+ * {@hide}
+ */
+public class DefaultNetworkMetrics {
+
+    private static final int ROLLING_LOG_SIZE = 64;
+
+    // Event buffer used for metrics upload. The buffer is cleared when events are collected.
+    @GuardedBy("this")
+    private final List<DefaultNetworkEvent> mEvents = new ArrayList<>();
+
+    public synchronized void listEvents(PrintWriter pw) {
+        long localTimeMs = System.currentTimeMillis();
+        for (DefaultNetworkEvent ev : mEvents) {
+            pw.println(ev);
+        }
+    }
+
+    public synchronized void listEventsAsProto(PrintWriter pw) {
+        for (DefaultNetworkEvent ev : mEvents) {
+            pw.print(IpConnectivityEventBuilder.toProto(ev));
+        }
+    }
+
+    public synchronized void flushEvents(List<IpConnectivityEvent> out) {
+        for (DefaultNetworkEvent ev : mEvents) {
+            out.add(IpConnectivityEventBuilder.toProto(ev));
+        }
+        mEvents.clear();
+    }
+
+    public synchronized void logDefaultNetworkEvent(
+            NetworkAgentInfo newNai, NetworkAgentInfo prevNai) {
+        DefaultNetworkEvent ev = new DefaultNetworkEvent();
+        if (newNai != null) {
+            ev.netId = newNai.network().netId;
+            ev.transportTypes = newNai.networkCapabilities.getTransportTypes();
+        }
+        if (prevNai != null) {
+            ev.prevNetId = prevNai.network().netId;
+            final LinkProperties lp = prevNai.linkProperties;
+            ev.prevIPv4 = lp.hasIPv4Address() && lp.hasIPv4DefaultRoute();
+            ev.prevIPv6 = lp.hasGlobalIPv6Address() && lp.hasIPv6DefaultRoute();
+        }
+
+        mEvents.add(ev);
+    }
+}
diff --git a/services/core/java/com/android/server/connectivity/IpConnectivityEventBuilder.java b/services/core/java/com/android/server/connectivity/IpConnectivityEventBuilder.java
index 67e7216..3d71ecb 100644
--- a/services/core/java/com/android/server/connectivity/IpConnectivityEventBuilder.java
+++ b/services/core/java/com/android/server/connectivity/IpConnectivityEventBuilder.java
@@ -132,6 +132,18 @@
         return out;
     }
 
+    public static IpConnectivityEvent toProto(DefaultNetworkEvent in) {
+        IpConnectivityLogClass.DefaultNetworkEvent ev =
+                new IpConnectivityLogClass.DefaultNetworkEvent();
+        ev.networkId = netIdOf(in.netId);
+        ev.previousNetworkId = netIdOf(in.prevNetId);
+        ev.transportTypes = in.transportTypes;
+        ev.previousNetworkIpSupport = ipSupportOf(in);
+        final IpConnectivityEvent out = buildEvent(in.netId, 0, null);
+        out.setDefaultNetworkEvent(ev);
+        return out;
+    }
+
     private static IpConnectivityEvent buildEvent(int netId, long transports, String ifname) {
         final IpConnectivityEvent ev = new IpConnectivityEvent();
         ev.networkId = netId;
@@ -164,11 +176,6 @@
             return true;
         }
 
-        if (in instanceof DefaultNetworkEvent) {
-            setDefaultNetworkEvent(out, (DefaultNetworkEvent) in);
-            return true;
-        }
-
         if (in instanceof NetworkEvent) {
             setNetworkEvent(out, (NetworkEvent) in);
             return true;
@@ -225,16 +232,6 @@
         out.setIpReachabilityEvent(ipReachabilityEvent);
     }
 
-    private static void setDefaultNetworkEvent(IpConnectivityEvent out, DefaultNetworkEvent in) {
-        IpConnectivityLogClass.DefaultNetworkEvent defaultNetworkEvent =
-                new IpConnectivityLogClass.DefaultNetworkEvent();
-        defaultNetworkEvent.networkId = netIdOf(in.netId);
-        defaultNetworkEvent.previousNetworkId = netIdOf(in.prevNetId);
-        defaultNetworkEvent.transportTypes = in.transportTypes;
-        defaultNetworkEvent.previousNetworkIpSupport = ipSupportOf(in);
-        out.setDefaultNetworkEvent(defaultNetworkEvent);
-    }
-
     private static void setNetworkEvent(IpConnectivityEvent out, NetworkEvent in) {
         IpConnectivityLogClass.NetworkEvent networkEvent =
                 new IpConnectivityLogClass.NetworkEvent();
diff --git a/services/core/java/com/android/server/connectivity/IpConnectivityMetrics.java b/services/core/java/com/android/server/connectivity/IpConnectivityMetrics.java
index f2445fa..24217e6 100644
--- a/services/core/java/com/android/server/connectivity/IpConnectivityMetrics.java
+++ b/services/core/java/com/android/server/connectivity/IpConnectivityMetrics.java
@@ -32,12 +32,15 @@
 import android.util.ArrayMap;
 import android.util.Base64;
 import android.util.Log;
+
 import com.android.internal.annotations.GuardedBy;
 import com.android.internal.annotations.VisibleForTesting;
 import com.android.internal.util.RingBuffer;
 import com.android.internal.util.TokenBucket;
+import com.android.server.LocalServices;
 import com.android.server.SystemService;
 import com.android.server.connectivity.metrics.nano.IpConnectivityLogClass.IpConnectivityEvent;
+
 import java.io.FileDescriptor;
 import java.io.IOException;
 import java.io.PrintWriter;
@@ -112,6 +115,9 @@
 
     private final ToIntFunction<Context> mCapacityGetter;
 
+    @VisibleForTesting
+    final DefaultNetworkMetrics mDefaultNetworkMetrics = new DefaultNetworkMetrics();
+
     public IpConnectivityMetrics(Context ctx, ToIntFunction<Context> capacityGetter) {
         super(ctx);
         mCapacityGetter = capacityGetter;
@@ -135,6 +141,8 @@
 
             publishBinderService(SERVICE_NAME, impl);
             publishBinderService(mNetdListener.SERVICE_NAME, mNetdListener);
+
+            LocalServices.addService(Logger.class, new LoggerImpl());
         }
     }
 
@@ -188,6 +196,8 @@
 
         final List<IpConnectivityEvent> protoEvents = IpConnectivityEventBuilder.toProto(events);
 
+        mDefaultNetworkMetrics.flushEvents(protoEvents);
+
         if (mNetdListener != null) {
             mNetdListener.flushStatistics(protoEvents);
         }
@@ -228,6 +238,7 @@
             if (mNetdListener != null) {
                 mNetdListener.listAsProtos(pw);
             }
+            mDefaultNetworkMetrics.listEventsAsProto(pw);
             return;
         }
 
@@ -237,6 +248,7 @@
         if (mNetdListener != null) {
             mNetdListener.list(pw);
         }
+        mDefaultNetworkMetrics.listEvents(pw);
     }
 
     /**
@@ -254,6 +266,7 @@
         if (mNetdListener != null) {
             mNetdListener.list(pw);
         }
+        mDefaultNetworkMetrics.listEvents(pw);
     }
 
     private void cmdStats(FileDescriptor fd, PrintWriter pw, String[] args) {
@@ -366,4 +379,15 @@
         map.put(ApfProgramEvent.class, new TokenBucket((int)DateUtils.MINUTE_IN_MILLIS, 50));
         return map;
     }
+
+    /** Direct non-Binder interface for event producer clients within the system servers. */
+    public interface Logger {
+        DefaultNetworkMetrics defaultNetworkMetrics();
+    }
+
+    private class LoggerImpl implements Logger {
+        public DefaultNetworkMetrics defaultNetworkMetrics() {
+            return mDefaultNetworkMetrics;
+        }
+    }
 }
diff --git a/services/core/java/com/android/server/connectivity/Tethering.java b/services/core/java/com/android/server/connectivity/Tethering.java
index 0993f42..d1bab89 100644
--- a/services/core/java/com/android/server/connectivity/Tethering.java
+++ b/services/core/java/com/android/server/connectivity/Tethering.java
@@ -28,6 +28,7 @@
 import static android.net.wifi.WifiManager.IFACE_IP_MODE_TETHERED;
 import static android.net.wifi.WifiManager.IFACE_IP_MODE_UNSPECIFIED;
 import static android.net.wifi.WifiManager.WIFI_AP_STATE_DISABLED;
+import static android.telephony.CarrierConfigManager.ACTION_CARRIER_CONFIG_CHANGED;
 import static com.android.server.ConnectivityService.SHORT_ARG;
 
 import android.app.Notification;
@@ -60,6 +61,7 @@
 import android.net.RouteInfo;
 import android.net.util.PrefixUtils;
 import android.net.util.SharedLog;
+import android.net.util.VersionedBroadcastListener;
 import android.net.wifi.WifiManager;
 import android.os.Binder;
 import android.os.Bundle;
@@ -68,6 +70,7 @@
 import android.os.Looper;
 import android.os.Message;
 import android.os.Parcel;
+import android.os.PersistableBundle;
 import android.os.RemoteException;
 import android.os.ResultReceiver;
 import android.os.UserHandle;
@@ -180,6 +183,8 @@
     // TODO: Figure out how to merge this and other downstream-tracking objects
     // into a single coherent structure.
     private final HashSet<TetherInterfaceStateMachine> mForwardedDownstreams;
+    private final VersionedBroadcastListener mCarrierConfigChange;
+    // TODO: Delete SimChangeListener; it's obsolete.
     private final SimChangeListener mSimChange;
 
     private volatile TetheringConfiguration mConfig;
@@ -220,11 +225,26 @@
         mUpstreamNetworkMonitor = new UpstreamNetworkMonitor(
                 mContext, mTetherMasterSM, mLog, TetherMasterSM.EVENT_UPSTREAM_CALLBACK);
         mForwardedDownstreams = new HashSet<>();
+
+        IntentFilter filter = new IntentFilter();
+        filter.addAction(ACTION_CARRIER_CONFIG_CHANGED);
+        mCarrierConfigChange = new VersionedBroadcastListener(
+                "CarrierConfigChangeListener", mContext, smHandler, filter,
+                (Intent ignored) -> {
+                    mLog.log("OBSERVED carrier config change");
+                    reevaluateSimCardProvisioning();
+                });
+        // TODO: Remove SimChangeListener altogether. For now, we retain it
+        // for logging purposes in case we need to debug something that might
+        // be related to changing signals from ACTION_SIM_STATE_CHANGED to
+        // ACTION_CARRIER_CONFIG_CHANGED.
         mSimChange = new SimChangeListener(
-                mContext, smHandler, () -> reevaluateSimCardProvisioning());
+                mContext, smHandler, () -> {
+                    mLog.log("OBSERVED SIM card change");
+                });
 
         mStateReceiver = new StateReceiver();
-        IntentFilter filter = new IntentFilter();
+        filter = new IntentFilter();
         filter.addAction(UsbManager.ACTION_USB_STATE);
         filter.addAction(ConnectivityManager.CONNECTIVITY_ACTION);
         filter.addAction(WifiManager.WIFI_AP_STATE_CHANGED_ACTION);
@@ -353,18 +373,30 @@
             return false;
         }
 
+        if (carrierConfigAffirmsEntitlementCheckNotRequired()) {
+            return false;
+        }
+        return (provisionApp.length == 2);
+    }
+
+    // The logic here is aimed solely at confirming that a CarrierConfig exists
+    // and affirms that entitlement checks are not required.
+    //
+    // TODO: find a better way to express this, or alter the checking process
+    // entirely so that this is more intuitive.
+    private boolean carrierConfigAffirmsEntitlementCheckNotRequired() {
         // Check carrier config for entitlement checks
         final CarrierConfigManager configManager = (CarrierConfigManager) mContext
              .getSystemService(Context.CARRIER_CONFIG_SERVICE);
-        if (configManager != null && configManager.getConfig() != null) {
-            // we do have a CarrierConfigManager and it has a config.
-            boolean isEntitlementCheckRequired = configManager.getConfig().getBoolean(
-                    CarrierConfigManager.KEY_REQUIRE_ENTITLEMENT_CHECKS_BOOL);
-            if (!isEntitlementCheckRequired) {
-                return false;
-            }
-        }
-        return (provisionApp.length == 2);
+        if (configManager == null) return false;
+
+        final PersistableBundle carrierConfig = configManager.getConfig();
+        if (carrierConfig == null) return false;
+
+        // A CarrierConfigManager was found and it has a config.
+        final boolean isEntitlementCheckRequired = carrierConfig.getBoolean(
+                CarrierConfigManager.KEY_REQUIRE_ENTITLEMENT_CHECKS_BOOL);
+        return !isEntitlementCheckRequired;
     }
 
     // Used by the SIM card change observation code.
@@ -794,6 +826,7 @@
             } else if (action.equals(WifiManager.WIFI_AP_STATE_CHANGED_ACTION)) {
                 handleWifiApAction(intent);
             } else if (action.equals(Intent.ACTION_CONFIGURATION_CHANGED)) {
+                mLog.log("OBSERVED configuration changed");
                 updateConfiguration();
             }
         }
@@ -1136,6 +1169,7 @@
 
     private void reevaluateSimCardProvisioning() {
         if (!hasMobileHotspotProvisionApp()) return;
+        if (carrierConfigAffirmsEntitlementCheckNotRequired()) return;
 
         ArrayList<Integer> tethered = new ArrayList<>();
         synchronized (mPublicSync) {
@@ -1503,6 +1537,7 @@
                     return;
                 }
 
+                mCarrierConfigChange.startListening();
                 mSimChange.startListening();
                 mUpstreamNetworkMonitor.start();
 
@@ -1520,6 +1555,7 @@
                 mOffload.stop();
                 mUpstreamNetworkMonitor.stop();
                 mSimChange.stopListening();
+                mCarrierConfigChange.stopListening();
                 notifyDownstreamsOfNewUpstreamIface(null);
                 handleNewUpstreamNetworkState(null);
             }
diff --git a/services/core/java/com/android/server/connectivity/tethering/SimChangeListener.java b/services/core/java/com/android/server/connectivity/tethering/SimChangeListener.java
index 3e60f9f..33c9355 100644
--- a/services/core/java/com/android/server/connectivity/tethering/SimChangeListener.java
+++ b/services/core/java/com/android/server/connectivity/tethering/SimChangeListener.java
@@ -23,12 +23,15 @@
 import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
+import android.net.util.VersionedBroadcastListener;
+import android.net.util.VersionedBroadcastListener.IntentCallback;
 import android.os.Handler;
 import android.util.Log;
 
 import com.android.internal.telephony.TelephonyIntents;
 
 import java.util.concurrent.atomic.AtomicInteger;
+import java.util.function.Consumer;
 
 
 /**
@@ -37,88 +40,40 @@
  *
  * @hide
  */
-public class SimChangeListener {
+public class SimChangeListener extends VersionedBroadcastListener {
     private static final String TAG = SimChangeListener.class.getSimpleName();
     private static final boolean DBG = false;
 
-    private final Context mContext;
-    private final Handler mTarget;
-    private final AtomicInteger mSimBcastGenerationNumber;
-    private final Runnable mCallback;
-    private BroadcastReceiver mBroadcastReceiver;
-
     public SimChangeListener(Context ctx, Handler handler, Runnable onSimCardLoadedCallback) {
-        mContext = ctx;
-        mTarget = handler;
-        mCallback = onSimCardLoadedCallback;
-        mSimBcastGenerationNumber = new AtomicInteger(0);
+        super(TAG, ctx, handler, makeIntentFilter(), makeCallback(onSimCardLoadedCallback));
     }
 
-    public int generationNumber() {
-        return mSimBcastGenerationNumber.get();
-    }
-
-    public void startListening() {
-        if (DBG) Log.d(TAG, "startListening for SIM changes");
-
-        if (mBroadcastReceiver != null) return;
-
-        mBroadcastReceiver = new SimChangeBroadcastReceiver(
-                mSimBcastGenerationNumber.incrementAndGet());
+    private static IntentFilter makeIntentFilter() {
         final IntentFilter filter = new IntentFilter();
         filter.addAction(TelephonyIntents.ACTION_SIM_STATE_CHANGED);
-
-        mContext.registerReceiver(mBroadcastReceiver, filter, null, mTarget);
+        return filter;
     }
 
-    public void stopListening() {
-        if (DBG) Log.d(TAG, "stopListening for SIM changes");
+    private static Consumer<Intent> makeCallback(Runnable onSimCardLoadedCallback) {
+        return new Consumer<Intent>() {
+            private boolean mSimNotLoadedSeen = false;
 
-        if (mBroadcastReceiver == null) return;
+            @Override
+            public void accept(Intent intent) {
+                final String state = intent.getStringExtra(INTENT_KEY_ICC_STATE);
+                Log.d(TAG, "got Sim changed to state " + state + ", mSimNotLoadedSeen=" +
+                        mSimNotLoadedSeen);
 
-        mSimBcastGenerationNumber.incrementAndGet();
-        mContext.unregisterReceiver(mBroadcastReceiver);
-        mBroadcastReceiver = null;
-    }
+                if (!INTENT_VALUE_ICC_LOADED.equals(state)) {
+                    mSimNotLoadedSeen = true;
+                    return;
+                }
 
-    private boolean isSimCardLoaded(String state) {
-        return INTENT_VALUE_ICC_LOADED.equals(state);
-    }
-
-    private class SimChangeBroadcastReceiver extends BroadcastReceiver {
-        // used to verify this receiver is still current
-        final private int mGenerationNumber;
-
-        // used to check the sim state transition from non-loaded to loaded
-        private boolean mSimNotLoadedSeen = false;
-
-        public SimChangeBroadcastReceiver(int generationNumber) {
-            mGenerationNumber = generationNumber;
-        }
-
-        @Override
-        public void onReceive(Context context, Intent intent) {
-            final int currentGenerationNumber = mSimBcastGenerationNumber.get();
-
-            if (DBG) {
-                Log.d(TAG, "simchange mGenerationNumber=" + mGenerationNumber +
-                        ", current generationNumber=" + currentGenerationNumber);
+                if (mSimNotLoadedSeen) {
+                    mSimNotLoadedSeen = false;
+                    onSimCardLoadedCallback.run();
+                }
             }
-            if (mGenerationNumber != currentGenerationNumber) return;
-
-            final String state = intent.getStringExtra(INTENT_KEY_ICC_STATE);
-            Log.d(TAG, "got Sim changed to state " + state + ", mSimNotLoadedSeen=" +
-                    mSimNotLoadedSeen);
-
-            if (!isSimCardLoaded(state)) {
-                mSimNotLoadedSeen = true;
-                return;
-            }
-
-            if (mSimNotLoadedSeen) {
-                mSimNotLoadedSeen = false;
-                mCallback.run();
-            }
-        }
+        };
     }
 }
diff --git a/services/core/java/com/android/server/net/OWNERS b/services/core/java/com/android/server/net/OWNERS
index 061fd8d..6b77d83 100644
--- a/services/core/java/com/android/server/net/OWNERS
+++ b/services/core/java/com/android/server/net/OWNERS
@@ -2,7 +2,7 @@
 
 ek@google.com
 hugobenichi@google.com
-jsharkey@google.com
+jsharkey@android.com
 lorenzo@google.com
 satk@google.com
 silberst@google.com
diff --git a/services/core/java/com/android/server/pm/BackgroundDexOptService.java b/services/core/java/com/android/server/pm/BackgroundDexOptService.java
index 6749afb..e5c48cc 100644
--- a/services/core/java/com/android/server/pm/BackgroundDexOptService.java
+++ b/services/core/java/com/android/server/pm/BackgroundDexOptService.java
@@ -18,7 +18,6 @@
 
 import static com.android.server.pm.PackageManagerService.DEBUG_DEXOPT;
 
-import android.app.AlarmManager;
 import android.app.job.JobInfo;
 import android.app.job.JobParameters;
 import android.app.job.JobScheduler;
@@ -38,8 +37,10 @@
 import com.android.server.pm.dex.DexManager;
 import com.android.server.LocalServices;
 import com.android.server.PinnerService;
+import com.android.server.pm.dex.DexoptOptions;
 
 import java.io.File;
+import java.util.Set;
 import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.concurrent.TimeUnit;
 
@@ -73,6 +74,9 @@
     // Optimizations should be aborted. No space left on device.
     private static final int OPTIMIZE_ABORT_NO_SPACE_LEFT = 3;
 
+    // Used for calculating space threshold for downgrading unused apps.
+    private static final int LOW_THRESHOLD_MULTIPLIER_FOR_DOWNGRADE = 2;
+
     /**
      * Set of failed packages remembered across job runs.
      */
@@ -92,6 +96,9 @@
 
     private final File mDataDir = Environment.getDataDirectory();
 
+    private static final long mDowngradeUnusedAppsThresholdInMillis =
+            getDowngradeUnusedAppsThresholdInMillis();
+
     public static void schedule(Context context) {
         JobScheduler js = (JobScheduler) context.getSystemService(Context.JOB_SCHEDULER_SERVICE);
 
@@ -211,11 +218,10 @@
             // Unfortunately this will also means that "pm.dexopt.boot=speed-profile" will
             // behave differently than "pm.dexopt.bg-dexopt=speed-profile" but that's a
             // trade-off worth doing to save boot time work.
-            int result = pm.performDexOptWithStatus(pkg,
-                    /* checkProfiles */ false,
+            int result = pm.performDexOptWithStatus(new DexoptOptions(
+                    pkg,
                     PackageManagerService.REASON_BOOT,
-                    /* force */ false,
-                    /* bootComplete */ true);
+                    DexoptOptions.DEXOPT_BOOT_COMPLETE));
             if (result == PackageDexOptimizer.DEX_OPT_PERFORMED)  {
                 updatedPackages.add(pkg);
             }
@@ -243,7 +249,8 @@
     }
 
     // Optimize the given packages and return the optimization result (one of the OPTIMIZE_* codes).
-    private int idleOptimization(PackageManagerService pm, ArraySet<String> pkgs, Context context) {
+    private int idleOptimization(PackageManagerService pm, ArraySet<String> pkgs,
+            Context context) {
         Log.i(TAG, "Performing idle optimizations");
         // If post-boot update is still running, request that it exits early.
         mExitPostBootUpdate.set(true);
@@ -274,9 +281,16 @@
             long lowStorageThreshold, boolean is_for_primary_dex,
             ArraySet<String> failedPackageNames) {
         ArraySet<String> updatedPackages = new ArraySet<>();
+        Set<String> unusedPackages = pm.getUnusedPackages(mDowngradeUnusedAppsThresholdInMillis);
+        // Only downgrade apps when space is low on device.
+        // Threshold is selected above the lowStorageThreshold so that we can pro-actively clean
+        // up disk before user hits the actual lowStorageThreshold.
+        final long lowStorageThresholdForDowngrade = LOW_THRESHOLD_MULTIPLIER_FOR_DOWNGRADE *
+                lowStorageThreshold;
+        boolean shouldDowngrade = shouldDowngrade(lowStorageThresholdForDowngrade);
         for (String pkg : pkgs) {
             int abort_code = abortIdleOptimizations(lowStorageThreshold);
-            if (abort_code != OPTIMIZE_CONTINUE) {
+            if (abort_code == OPTIMIZE_ABORT_BY_JOB_SCHEDULER) {
                 return abort_code;
             }
 
@@ -284,30 +298,58 @@
                 if (failedPackageNames.contains(pkg)) {
                     // Skip previously failing package
                     continue;
-                } else {
-                    // Conservatively add package to the list of failing ones in case performDexOpt
-                    // never returns.
-                    failedPackageNames.add(pkg);
                 }
             }
 
+            int reason;
+            boolean downgrade;
+            // Downgrade unused packages.
+            if (unusedPackages.contains(pkg) && shouldDowngrade) {
+                // This applies for system apps or if packages location is not a directory, i.e.
+                // monolithic install.
+                if (is_for_primary_dex && !pm.canHaveOatDir(pkg)) {
+                    // For apps that don't have the oat directory, instead of downgrading,
+                    // remove their compiler artifacts from dalvik cache.
+                    pm.deleteOatArtifactsOfPackage(pkg);
+                    continue;
+                } else {
+                    reason = PackageManagerService.REASON_INACTIVE_PACKAGE_DOWNGRADE;
+                    downgrade = true;
+                }
+            } else if (abort_code != OPTIMIZE_ABORT_NO_SPACE_LEFT) {
+                reason = PackageManagerService.REASON_BACKGROUND_DEXOPT;
+                downgrade = false;
+            } else {
+                // can't dexopt because of low space.
+                continue;
+            }
+
+            synchronized (failedPackageNames) {
+                // Conservatively add package to the list of failing ones in case
+                // performDexOpt never returns.
+                failedPackageNames.add(pkg);
+            }
+
             // Optimize package if needed. Note that there can be no race between
             // concurrent jobs because PackageDexOptimizer.performDexOpt is synchronized.
             boolean success;
+            int dexoptFlags =
+                    DexoptOptions.DEXOPT_CHECK_FOR_PROFILES_UPDATES |
+                    DexoptOptions.DEXOPT_BOOT_COMPLETE |
+                    (downgrade ? DexoptOptions.DEXOPT_DOWNGRADE : 0) |
+                    DexoptOptions.DEXOPT_IDLE_BACKGROUND_JOB;
             if (is_for_primary_dex) {
-                int result = pm.performDexOptWithStatus(pkg,
-                        /* checkProfiles */ true,
+                int result = pm.performDexOptWithStatus(new DexoptOptions(pkg,
                         PackageManagerService.REASON_BACKGROUND_DEXOPT,
-                        /* force */ false,
-                        /* bootComplete */ true);
+                        dexoptFlags));
                 success = result != PackageDexOptimizer.DEX_OPT_FAILED;
                 if (result == PackageDexOptimizer.DEX_OPT_PERFORMED) {
                     updatedPackages.add(pkg);
                 }
             } else {
-                success = pm.performDexOptSecondary(pkg,
+                success = pm.performDexOpt(new DexoptOptions(pkg,
                         PackageManagerService.REASON_BACKGROUND_DEXOPT,
-                        /* force */ false);
+                        dexoptFlags | DexoptOptions.DEXOPT_ONLY_SECONDARY_DEX));
             }
             if (success) {
                 // Dexopt succeeded, remove package from the list of failing ones.
@@ -347,6 +389,16 @@
         return OPTIMIZE_CONTINUE;
     }
 
+    // Evaluate whether apps should be downgraded.
+    private boolean shouldDowngrade(long lowStorageThresholdForDowngrade) {
+        long usableSpace = mDataDir.getUsableSpace();
+        if (usableSpace < lowStorageThresholdForDowngrade) {
+            return true;
+        }
+
+        return false;
+    }
+
     /**
      * Execute the idle optimizations immediately.
      */
@@ -415,4 +467,14 @@
             pinnerService.update(updatedPackages);
         }
     }
+
+    private static long getDowngradeUnusedAppsThresholdInMillis() {
+        final String sysPropKey = "pm.dexopt.downgrade_after_inactive_days";
+        String sysPropValue = SystemProperties.get(sysPropKey);
+        if (sysPropValue == null || sysPropValue.isEmpty()) {
+            Log.w(TAG, "SysProp " + sysPropKey + " not set");
+            return Long.MAX_VALUE;
+        }
+        return TimeUnit.DAYS.toMillis(Long.parseLong(sysPropValue));
+    }
 }
diff --git a/services/core/java/com/android/server/pm/Installer.java b/services/core/java/com/android/server/pm/Installer.java
index 5c4c040..210eb13 100644
--- a/services/core/java/com/android/server/pm/Installer.java
+++ b/services/core/java/com/android/server/pm/Installer.java
@@ -56,6 +56,8 @@
     public static final int DEXOPT_STORAGE_CE     = 1 << 7;
     /** Indicates that the dex file passed to dexopt in on DE storage. */
     public static final int DEXOPT_STORAGE_DE     = 1 << 8;
+    /** Indicates that dexopt is invoked from the background service. */
+    public static final int DEXOPT_IDLE_BACKGROUND_JOB = 1 << 9;
 
     // NOTE: keep in sync with installd
     public static final int FLAG_CLEAR_CACHE_ONLY = 1 << 8;
@@ -258,7 +260,7 @@
 
     public long[] getExternalSize(String uuid, int userId, int flags, int[] appIds)
             throws InstallerException {
-        if (!checkBeforeRemote()) return new long[4];
+        if (!checkBeforeRemote()) return new long[6];
         try {
             return mInstalld.getExternalSize(uuid, userId, flags, appIds);
         } catch (Exception e) {
@@ -279,13 +281,13 @@
     public void dexopt(String apkPath, int uid, @Nullable String pkgName, String instructionSet,
             int dexoptNeeded, @Nullable String outputPath, int dexFlags,
             String compilerFilter, @Nullable String volumeUuid, @Nullable String sharedLibraries,
-            @Nullable String seInfo)
+            @Nullable String seInfo, boolean downgrade)
             throws InstallerException {
         assertValidInstructionSet(instructionSet);
         if (!checkBeforeRemote()) return;
         try {
             mInstalld.dexopt(apkPath, uid, pkgName, instructionSet, dexoptNeeded, outputPath,
-                    dexFlags, compilerFilter, volumeUuid, sharedLibraries, seInfo);
+                    dexFlags, compilerFilter, volumeUuid, sharedLibraries, seInfo, downgrade);
         } catch (Exception e) {
             throw InstallerException.from(e);
         }
diff --git a/services/core/java/com/android/server/pm/OtaDexoptService.java b/services/core/java/com/android/server/pm/OtaDexoptService.java
index a43f8af..da6e26e 100644
--- a/services/core/java/com/android/server/pm/OtaDexoptService.java
+++ b/services/core/java/com/android/server/pm/OtaDexoptService.java
@@ -18,7 +18,6 @@
 
 import static com.android.server.pm.InstructionSets.getAppDexInstructionSets;
 import static com.android.server.pm.InstructionSets.getDexCodeInstructionSets;
-import static com.android.server.pm.PackageManagerServiceCompilerMapping.getCompilerFilterForReason;
 
 import android.annotation.Nullable;
 import android.content.Context;
@@ -30,17 +29,16 @@
 import android.os.ServiceManager;
 import android.os.ShellCallback;
 import android.os.storage.StorageManager;
-import android.text.TextUtils;
 import android.util.Log;
 import android.util.Slog;
 
 import com.android.internal.logging.MetricsLogger;
 import com.android.server.pm.Installer.InstallerException;
+import com.android.server.pm.dex.DexoptOptions;
 
 import java.io.File;
 import java.io.FileDescriptor;
 import java.util.ArrayList;
-import java.util.Arrays;
 import java.util.Collection;
 import java.util.List;
 import java.util.concurrent.TimeUnit;
@@ -261,11 +259,12 @@
             public void dexopt(String apkPath, int uid, @Nullable String pkgName,
                     String instructionSet, int dexoptNeeded, @Nullable String outputPath,
                     int dexFlags, String compilerFilter, @Nullable String volumeUuid,
-                    @Nullable String sharedLibraries, @Nullable String seInfo) throws InstallerException {
+                    @Nullable String sharedLibraries, @Nullable String seInfo, boolean downgrade)
+                    throws InstallerException {
                 final StringBuilder builder = new StringBuilder();
 
-                // The version. Right now it's 2.
-                builder.append("2 ");
+                // The version. Right now it's 3.
+                builder.append("3 ");
 
                 builder.append("dexopt");
 
@@ -280,6 +279,7 @@
                 encodeParameter(builder, volumeUuid);
                 encodeParameter(builder, sharedLibraries);
                 encodeParameter(builder, seInfo);
+                encodeParameter(builder, downgrade);
 
                 commands.add(builder.toString());
             }
@@ -314,12 +314,18 @@
             libraryDependencies = NO_LIBRARIES;
         }
 
+
         optimizer.performDexOpt(pkg, libraryDependencies,
-                null /* ISAs */, false /* checkProfiles */,
-                getCompilerFilterForReason(compilationReason),
+                null /* ISAs */,
                 null /* CompilerStats.PackageStats */,
-                mPackageManagerService.getDexManager().isUsedByOtherApps(pkg.packageName),
-                true /* bootComplete */);
+                mPackageManagerService.getDexManager().getPackageUseInfoOrDefault(pkg.packageName),
+                new DexoptOptions(pkg.packageName, compilationReason,
+                        DexoptOptions.DEXOPT_BOOT_COMPLETE));
+
+        mPackageManagerService.getDexManager().dexoptSecondaryDex(
+                new DexoptOptions(pkg.packageName, compilationReason,
+                        DexoptOptions.DEXOPT_ONLY_SECONDARY_DEX |
+                        DexoptOptions.DEXOPT_BOOT_COMPLETE));
 
         return commands;
     }
diff --git a/services/core/java/com/android/server/pm/PackageDexOptimizer.java b/services/core/java/com/android/server/pm/PackageDexOptimizer.java
index 7e9596a..dfa828d 100644
--- a/services/core/java/com/android/server/pm/PackageDexOptimizer.java
+++ b/services/core/java/com/android/server/pm/PackageDexOptimizer.java
@@ -19,9 +19,7 @@
 import android.annotation.Nullable;
 import android.content.Context;
 import android.content.pm.ApplicationInfo;
-import android.content.pm.PackageInfo;
 import android.content.pm.PackageParser;
-import android.os.Environment;
 import android.os.FileUtils;
 import android.os.PowerManager;
 import android.os.SystemClock;
@@ -30,17 +28,20 @@
 import android.os.WorkSource;
 import android.util.Log;
 import android.util.Slog;
-import android.util.SparseArray;
 
 import com.android.internal.annotations.GuardedBy;
 import com.android.internal.util.IndentingPrintWriter;
 import com.android.server.pm.Installer.InstallerException;
+import com.android.server.pm.dex.DexManager;
+import com.android.server.pm.dex.DexoptOptions;
+import com.android.server.pm.dex.DexoptUtils;
+import com.android.server.pm.dex.PackageDexUsage;
 
 import java.io.File;
 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.List;
-import java.util.Set;
+import java.util.Map;
 
 import dalvik.system.DexFile;
 
@@ -52,6 +53,7 @@
 import static com.android.server.pm.Installer.DEXOPT_FORCE;
 import static com.android.server.pm.Installer.DEXOPT_STORAGE_CE;
 import static com.android.server.pm.Installer.DEXOPT_STORAGE_DE;
+import static com.android.server.pm.Installer.DEXOPT_IDLE_BACKGROUND_JOB;
 import static com.android.server.pm.InstructionSets.getAppDexInstructionSets;
 import static com.android.server.pm.InstructionSets.getDexCodeInstructionSets;
 
@@ -123,17 +125,16 @@
      * synchronized on {@link #mInstallLock}.
      */
     int performDexOpt(PackageParser.Package pkg, String[] sharedLibraries,
-            String[] instructionSets, boolean checkProfiles, String targetCompilationFilter,
-            CompilerStats.PackageStats packageStats, boolean isUsedByOtherApps,
-            boolean bootComplete) {
+            String[] instructionSets, CompilerStats.PackageStats packageStats,
+            PackageDexUsage.PackageUseInfo packageUseInfo, DexoptOptions options) {
         if (!canOptimizePackage(pkg)) {
             return DEX_OPT_SKIPPED;
         }
         synchronized (mInstallLock) {
             final long acquireTime = acquireWakeLockLI(pkg.applicationInfo.uid);
             try {
-                return performDexOptLI(pkg, sharedLibraries, instructionSets, checkProfiles,
-                        targetCompilationFilter, packageStats, isUsedByOtherApps, bootComplete);
+                return performDexOptLI(pkg, sharedLibraries, instructionSets,
+                        packageStats, packageUseInfo, options);
             } finally {
                 releaseWakeLockLI(acquireTime);
             }
@@ -146,26 +147,19 @@
      */
     @GuardedBy("mInstallLock")
     private int performDexOptLI(PackageParser.Package pkg, String[] sharedLibraries,
-            String[] targetInstructionSets, boolean checkForProfileUpdates,
-            String targetCompilerFilter, CompilerStats.PackageStats packageStats,
-            boolean isUsedByOtherApps, boolean bootComplete) {
+            String[] targetInstructionSets, CompilerStats.PackageStats packageStats,
+            PackageDexUsage.PackageUseInfo packageUseInfo, DexoptOptions options) {
         final String[] instructionSets = targetInstructionSets != null ?
                 targetInstructionSets : getAppDexInstructionSets(pkg.applicationInfo);
         final String[] dexCodeInstructionSets = getDexCodeInstructionSets(instructionSets);
         final List<String> paths = pkg.getAllCodePaths();
         final int sharedGid = UserHandle.getSharedAppGid(pkg.applicationInfo.uid);
 
-        final String compilerFilter = getRealCompilerFilter(pkg.applicationInfo,
-                targetCompilerFilter, isUsedByOtherApps);
-        final boolean profileUpdated = checkForProfileUpdates &&
-                isProfileUpdated(pkg, sharedGid, compilerFilter);
-
-        final String sharedLibrariesPath = getSharedLibrariesPath(sharedLibraries);
-        // Get the dexopt flags after getRealCompilerFilter to make sure we get the correct flags.
-        final int dexoptFlags = getDexFlags(pkg, compilerFilter, bootComplete);
-        // Get the dependencies of each split in the package. For each code path in the package,
-        // this array contains the relative paths of each split it depends on, separated by colons.
-        String[] splitDependencies = getSplitDependencies(pkg);
+        // Get the class loader context dependencies.
+        // For each code path in the package, this array contains the class loader context that
+        // needs to be passed to dexopt in order to ensure correct optimizations.
+        String[] classLoaderContexts = DexoptUtils.getClassLoaderContexts(
+                pkg.applicationInfo, sharedLibraries);
 
         int result = DEX_OPT_SKIPPED;
         for (int i = 0; i < paths.size(); i++) {
@@ -176,16 +170,29 @@
             }
             // Append shared libraries with split dependencies for this split.
             String path = paths.get(i);
-            String sharedLibrariesPathWithSplits;
-            if (sharedLibrariesPath != null && splitDependencies[i] != null) {
-                sharedLibrariesPathWithSplits = sharedLibrariesPath + ":" + splitDependencies[i];
-            } else {
-                sharedLibrariesPathWithSplits =
-                        splitDependencies[i] != null ? splitDependencies[i] : sharedLibrariesPath;
+            if (options.getSplitName() != null) {
+                // We are asked to compile only a specific split. Check that the current path is
+                // what we are looking for.
+                if (!options.getSplitName().equals(new File(path).getName())) {
+                    continue;
+                }
             }
+
+            final boolean isUsedByOtherApps = options.isDexoptAsSharedLibrary()
+                    || packageUseInfo.isUsedByOtherApps(path);
+            final String compilerFilter = getRealCompilerFilter(pkg.applicationInfo,
+                options.getCompilerFilter(), isUsedByOtherApps);
+            final boolean profileUpdated = options.isCheckForProfileUpdates() &&
+                isProfileUpdated(pkg, sharedGid, compilerFilter);
+
+            // Get the dexopt flags after getRealCompilerFilter to make sure we get the correct
+            // flags.
+            final int dexoptFlags = getDexFlags(pkg, compilerFilter, options.isBootComplete());
+
             for (String dexCodeIsa : dexCodeInstructionSets) {
-                int newResult = dexOptPath(pkg, path, dexCodeIsa, compilerFilter, profileUpdated,
-                        sharedLibrariesPathWithSplits, dexoptFlags, sharedGid, packageStats);
+                int newResult = dexOptPath(pkg, path, dexCodeIsa, compilerFilter,
+                        profileUpdated, classLoaderContexts[i], dexoptFlags, sharedGid,
+                        packageStats, options.isDowngrade());
                 // The end result is:
                 //  - FAILED if any path failed,
                 //  - PERFORMED if at least one path needed compilation,
@@ -208,9 +215,10 @@
      */
     @GuardedBy("mInstallLock")
     private int dexOptPath(PackageParser.Package pkg, String path, String isa,
-            String compilerFilter, boolean profileUpdated, String sharedLibrariesPath,
-            int dexoptFlags, int uid, CompilerStats.PackageStats packageStats) {
-        int dexoptNeeded = getDexoptNeeded(path, isa, compilerFilter, profileUpdated);
+            String compilerFilter, boolean profileUpdated, String classLoaderContext,
+            int dexoptFlags, int uid, CompilerStats.PackageStats packageStats, boolean downgrade) {
+        int dexoptNeeded = getDexoptNeeded(path, isa, compilerFilter, classLoaderContext,
+                profileUpdated, downgrade);
         if (Math.abs(dexoptNeeded) == DexFile.NO_DEXOPT_NEEDED) {
             return DEX_OPT_SKIPPED;
         }
@@ -223,14 +231,18 @@
         Log.i(TAG, "Running dexopt (dexoptNeeded=" + dexoptNeeded + ") on: " + path
                 + " pkg=" + pkg.applicationInfo.packageName + " isa=" + isa
                 + " dexoptFlags=" + printDexoptFlags(dexoptFlags)
-                + " target-filter=" + compilerFilter + " oatDir=" + oatDir
-                + " sharedLibraries=" + sharedLibrariesPath);
+                + " targetFilter=" + compilerFilter + " oatDir=" + oatDir
+                + " classLoaderContext=" + classLoaderContext);
 
         try {
             long startTime = System.currentTimeMillis();
 
+            // TODO: Consider adding 2 different APIs for primary and secondary dexopt.
+            // installd only uses downgrade flag for secondary dex files and ignores it for
+            // primary dex files.
             mInstaller.dexopt(path, uid, pkg.packageName, isa, dexoptNeeded, oatDir, dexoptFlags,
-                    compilerFilter, pkg.volumeUuid, sharedLibrariesPath, pkg.applicationInfo.seInfo);
+                    compilerFilter, pkg.volumeUuid, classLoaderContext, pkg.applicationInfo.seInfo,
+                    false /* downgrade*/);
 
             if (packageStats != null) {
                 long endTime = System.currentTimeMillis();
@@ -257,13 +269,12 @@
      * throwing exceptions). Or maybe make a separate call to installd to get DexOptNeeded, though
      * that seems wasteful.
      */
-    public int dexOptSecondaryDexPath(ApplicationInfo info, String path, Set<String> isas,
-            String compilerFilter, boolean isUsedByOtherApps) {
+    public int dexOptSecondaryDexPath(ApplicationInfo info, String path,
+            PackageDexUsage.DexUseInfo dexUseInfo, DexoptOptions options) {
         synchronized (mInstallLock) {
             final long acquireTime = acquireWakeLockLI(info.uid);
             try {
-                return dexOptSecondaryDexPathLI(info, path, isas, compilerFilter,
-                        isUsedByOtherApps);
+                return dexOptSecondaryDexPathLI(info, path, dexUseInfo, options);
             } finally {
                 releaseWakeLockLI(acquireTime);
             }
@@ -304,9 +315,16 @@
     }
 
     @GuardedBy("mInstallLock")
-    private int dexOptSecondaryDexPathLI(ApplicationInfo info, String path, Set<String> isas,
-            String compilerFilter, boolean isUsedByOtherApps) {
-        compilerFilter = getRealCompilerFilter(info, compilerFilter, isUsedByOtherApps);
+    private int dexOptSecondaryDexPathLI(ApplicationInfo info, String path,
+            PackageDexUsage.DexUseInfo dexUseInfo, DexoptOptions options) {
+        if (options.isDexoptOnlySharedDex() && !dexUseInfo.isUsedByOtherApps()) {
+            // We are asked to optimize only the dex files used by other apps and this is not
+            // on of them: skip it.
+            return DEX_OPT_SKIPPED;
+        }
+
+        String compilerFilter = getRealCompilerFilter(info, options.getCompilerFilter(),
+                dexUseInfo.isUsedByOtherApps());
         // Get the dexopt flags after getRealCompilerFilter to make sure we get the correct flags.
         // Secondary dex files are currently not compiled at boot.
         int dexoptFlags = getDexFlags(info, compilerFilter, /* bootComplete */ true)
@@ -323,19 +341,32 @@
             return DEX_OPT_FAILED;
         }
         Log.d(TAG, "Running dexopt on: " + path
-                + " pkg=" + info.packageName + " isa=" + isas
+                + " pkg=" + info.packageName + " isa=" + dexUseInfo.getLoaderIsas()
                 + " dexoptFlags=" + printDexoptFlags(dexoptFlags)
                 + " target-filter=" + compilerFilter);
 
+        String classLoaderContext;
+        if (dexUseInfo.isUnknownClassLoaderContext() ||
+                dexUseInfo.isUnsupportedClassLoaderContext() ||
+                dexUseInfo.isVariableClassLoaderContext()) {
+            // If we have an unknown (not yet set), unsupported (custom class loaders), or a
+            // variable class loader chain, compile without a context and mark the oat file with
+            // SKIP_SHARED_LIBRARY_CHECK. Note that his might lead to a incorrect compilation.
+            // TODO(calin): We should just extract in this case.
+            classLoaderContext = SKIP_SHARED_LIBRARY_CHECK;
+        } else {
+            classLoaderContext = dexUseInfo.getClassLoaderContext();
+        }
         try {
-            for (String isa : isas) {
+            for (String isa : dexUseInfo.getLoaderIsas()) {
                 // Reuse the same dexopt path as for the primary apks. We don't need all the
                 // arguments as some (dexopNeeded and oatDir) will be computed by installd because
                 // system server cannot read untrusted app content.
                 // TODO(calin): maybe add a separate call.
                 mInstaller.dexopt(path, info.uid, info.packageName, isa, /*dexoptNeeded*/ 0,
                         /*oatDir*/ null, dexoptFlags,
-                        compilerFilter, info.volumeUuid, SKIP_SHARED_LIBRARY_CHECK, info.seInfoUser);
+                        compilerFilter, info.volumeUuid, classLoaderContext, info.seInfoUser,
+                        options.isDowngrade());
             }
 
             return DEX_OPT_PERFORMED;
@@ -363,26 +394,60 @@
     /**
      * Dumps the dexopt state of the given package {@code pkg} to the given {@code PrintWriter}.
      */
-    void dumpDexoptState(IndentingPrintWriter pw, PackageParser.Package pkg) {
+    void dumpDexoptState(IndentingPrintWriter pw, PackageParser.Package pkg,
+            PackageDexUsage.PackageUseInfo useInfo) {
         final String[] instructionSets = getAppDexInstructionSets(pkg.applicationInfo);
         final String[] dexCodeInstructionSets = getDexCodeInstructionSets(instructionSets);
 
         final List<String> paths = pkg.getAllCodePathsExcludingResourceOnly();
 
-        for (String instructionSet : dexCodeInstructionSets) {
-             pw.println("Instruction Set: " + instructionSet);
-             pw.increaseIndent();
-             for (String path : paths) {
-                  String status = null;
-                  try {
-                      status = DexFile.getDexFileStatus(path, instructionSet);
-                  } catch (IOException ioe) {
-                      status = "[Exception]: " + ioe.getMessage();
-                  }
-                  pw.println("path: " + path);
-                  pw.println("status: " + status);
-             }
-             pw.decreaseIndent();
+        for (String path : paths) {
+            pw.println("path: " + path);
+            pw.increaseIndent();
+
+            for (String isa : dexCodeInstructionSets) {
+                String status = null;
+                try {
+                    status = DexFile.getDexFileStatus(path, isa);
+                } catch (IOException ioe) {
+                     status = "[Exception]: " + ioe.getMessage();
+                }
+                pw.println(isa + ": " + status);
+            }
+
+            if (useInfo.isUsedByOtherApps(path)) {
+                pw.println("used be other apps: " + useInfo.getLoadingPackages(path));
+            }
+
+            Map<String, PackageDexUsage.DexUseInfo> dexUseInfoMap = useInfo.getDexUseInfoMap();
+
+            if (!dexUseInfoMap.isEmpty()) {
+                pw.println("known secondary dex files:");
+                pw.increaseIndent();
+                for (Map.Entry<String, PackageDexUsage.DexUseInfo> e : dexUseInfoMap.entrySet()) {
+                    String dex = e.getKey();
+                    PackageDexUsage.DexUseInfo dexUseInfo = e.getValue();
+                    pw.println(dex);
+                    pw.increaseIndent();
+                    for (String isa : dexUseInfo.getLoaderIsas()) {
+                        String status = null;
+                        try {
+                            status = DexFile.getDexFileStatus(path, isa);
+                        } catch (IOException ioe) {
+                             status = "[Exception]: " + ioe.getMessage();
+                        }
+                        pw.println(isa + ": " + status);
+                    }
+
+                    pw.println("class loader context: " + dexUseInfo.getClassLoaderContext());
+                    if (dexUseInfo.isUsedByOtherApps()) {
+                        pw.println("used be other apps: " + dexUseInfo.getLoadingPackages());
+                    }
+                    pw.decreaseIndent();
+                }
+                pw.decreaseIndent();
+            }
+            pw.decreaseIndent();
         }
     }
 
@@ -436,11 +501,11 @@
      * configuration (isa, compiler filter, profile).
      */
     private int getDexoptNeeded(String path, String isa, String compilerFilter,
-            boolean newProfile) {
+            String classLoaderContext, boolean newProfile, boolean downgrade) {
         int dexoptNeeded;
         try {
-          dexoptNeeded = DexFile.getDexOptNeeded(path, isa, compilerFilter, newProfile,
-              false /* downgrade */);
+            dexoptNeeded = DexFile.getDexOptNeeded(path, isa, compilerFilter, classLoaderContext,
+                    newProfile, downgrade);
         } catch (IOException ioe) {
             Slog.w(TAG, "IOException reading apk: " + path, ioe);
             return DEX_OPT_FAILED;
@@ -449,86 +514,6 @@
     }
 
     /**
-     * Computes the shared libraries path that should be passed to dexopt.
-     */
-    private String getSharedLibrariesPath(String[] sharedLibraries) {
-        if (sharedLibraries == null || sharedLibraries.length == 0) {
-            return null;
-        }
-        StringBuilder sb = new StringBuilder();
-        for (String lib : sharedLibraries) {
-            if (sb.length() != 0) {
-                sb.append(":");
-            }
-            sb.append(lib);
-        }
-        return sb.toString();
-    }
-
-    /**
-     * Walks dependency tree and gathers the dependencies for each split in a split apk.
-     * The split paths are stored as relative paths, separated by colons.
-     */
-    private String[] getSplitDependencies(PackageParser.Package pkg) {
-        // Convert all the code paths to relative paths.
-        String baseCodePath = new File(pkg.baseCodePath).getParent();
-        List<String> paths = pkg.getAllCodePaths();
-        String[] splitDependencies = new String[paths.size()];
-        for (int i = 0; i < paths.size(); i++) {
-            File pathFile = new File(paths.get(i));
-            String fileName = pathFile.getName();
-            paths.set(i, fileName);
-
-            // Sanity check that the base paths of the splits are all the same.
-            String basePath = pathFile.getParent();
-            if (!basePath.equals(baseCodePath)) {
-                Slog.wtf(TAG, "Split paths have different base paths: " + basePath + " and " +
-                        baseCodePath);
-            }
-        }
-
-        // If there are no other dependencies, fill in the implicit dependency on the base apk.
-        SparseArray<int[]> dependencies = pkg.applicationInfo.splitDependencies;
-        if (dependencies == null) {
-            for (int i = 1; i < paths.size(); i++) {
-                splitDependencies[i] = paths.get(0);
-            }
-            return splitDependencies;
-        }
-
-        // Fill in the dependencies, skipping the base apk which has no dependencies.
-        for (int i = 1; i < dependencies.size(); i++) {
-            getParentDependencies(dependencies.keyAt(i), paths, dependencies, splitDependencies);
-        }
-
-        return splitDependencies;
-    }
-
-    /**
-     * Recursive method to generate dependencies for a particular split.
-     * The index is a key from the package's splitDependencies.
-     */
-    private String getParentDependencies(int index, List<String> paths,
-            SparseArray<int[]> dependencies, String[] splitDependencies) {
-        // The base apk is always first, and has no dependencies.
-        if (index == 0) {
-            return null;
-        }
-        // Return the result if we've computed the dependencies for this index already.
-        if (splitDependencies[index] != null) {
-            return splitDependencies[index];
-        }
-        // Get the dependencies for the parent of this index and append its path to it.
-        int parent = dependencies.get(index)[0];
-        String parentDependencies =
-                getParentDependencies(parent, paths, dependencies, splitDependencies);
-        String path = parentDependencies == null ? paths.get(parent) :
-                parentDependencies + ":" + paths.get(parent);
-        splitDependencies[index] = path;
-        return path;
-    }
-
-    /**
      * Checks if there is an update on the profile information of the {@code pkg}.
      * If the compiler filter is not profile guided the method returns false.
      *
@@ -619,6 +604,9 @@
         if ((flags & DEXOPT_STORAGE_DE) == DEXOPT_STORAGE_DE) {
             flagsList.add("storage_de");
         }
+        if ((flags & DEXOPT_IDLE_BACKGROUND_JOB) == DEXOPT_IDLE_BACKGROUND_JOB) {
+            flagsList.add("idle_background_job");
+        }
 
         return String.join(",", flagsList);
     }
diff --git a/services/core/java/com/android/server/pm/PackageManagerService.java b/services/core/java/com/android/server/pm/PackageManagerService.java
index da1df78..a8ea4ea 100644
--- a/services/core/java/com/android/server/pm/PackageManagerService.java
+++ b/services/core/java/com/android/server/pm/PackageManagerService.java
@@ -280,6 +280,8 @@
 import com.android.server.pm.Settings.DatabaseVersion;
 import com.android.server.pm.Settings.VersionInfo;
 import com.android.server.pm.dex.DexManager;
+import com.android.server.pm.dex.DexoptOptions;
+import com.android.server.pm.dex.PackageDexUsage;
 import com.android.server.storage.DeviceStorageMonitorInternal;
 
 import dalvik.system.CloseGuard;
@@ -559,8 +561,9 @@
     public static final int REASON_INSTALL = 2;
     public static final int REASON_BACKGROUND_DEXOPT = 3;
     public static final int REASON_AB_OTA = 4;
+    public static final int REASON_INACTIVE_PACKAGE_DOWNGRADE = 5;
 
-    public static final int REASON_LAST = REASON_AB_OTA;
+    public static final int REASON_LAST = REASON_INACTIVE_PACKAGE_DOWNGRADE;
 
     /** All dangerous permission names in the same order as the events in MetricsEvent */
     private static final List<String> ALL_DANGEROUS_PERMISSIONS = Arrays.asList(
@@ -9392,24 +9395,42 @@
             // Unfortunately this will also means that "pm.dexopt.boot=speed-profile" will
             // behave differently than "pm.dexopt.bg-dexopt=speed-profile" but that's a
             // trade-off worth doing to save boot time work.
-            int dexOptStatus = performDexOptTraced(pkg.packageName,
-                    false /* checkProfiles */,
+            int dexoptFlags = bootComplete ? DexoptOptions.DEXOPT_BOOT_COMPLETE : 0;
+            int primaryDexOptStaus = performDexOptTraced(new DexoptOptions(
+                    pkg.packageName,
                     compilerFilter,
-                    false /* force */,
-                    bootComplete);
-            switch (dexOptStatus) {
-                case PackageDexOptimizer.DEX_OPT_PERFORMED:
-                    numberOfPackagesOptimized++;
-                    break;
-                case PackageDexOptimizer.DEX_OPT_SKIPPED:
-                    numberOfPackagesSkipped++;
-                    break;
-                case PackageDexOptimizer.DEX_OPT_FAILED:
-                    numberOfPackagesFailed++;
-                    break;
-                default:
-                    Log.e(TAG, "Unexpected dexopt return code " + dexOptStatus);
-                    break;
+                    dexoptFlags));
+
+            boolean secondaryDexOptStatus = true;
+            if (pkg.isSystemApp()) {
+                // Only dexopt shared secondary dex files belonging to system apps to not slow down
+                // too much boot after an OTA.
+                int secondaryDexoptFlags = dexoptFlags |
+                        DexoptOptions.DEXOPT_ONLY_SECONDARY_DEX |
+                        DexoptOptions.DEXOPT_ONLY_SHARED_DEX;
+                mDexManager.dexoptSecondaryDex(new DexoptOptions(
+                        pkg.packageName,
+                        compilerFilter,
+                        secondaryDexoptFlags));
+            }
+
+            if (secondaryDexOptStatus) {
+                switch (primaryDexOptStaus) {
+                    case PackageDexOptimizer.DEX_OPT_PERFORMED:
+                        numberOfPackagesOptimized++;
+                        break;
+                    case PackageDexOptimizer.DEX_OPT_SKIPPED:
+                        numberOfPackagesSkipped++;
+                        break;
+                    case PackageDexOptimizer.DEX_OPT_FAILED:
+                        numberOfPackagesFailed++;
+                        break;
+                    default:
+                        Log.e(TAG, "Unexpected dexopt return code " + primaryDexOptStaus);
+                        break;
+                }
+            } else {
+                numberOfPackagesFailed++;
             }
         }
 
@@ -9440,7 +9461,8 @@
     }
 
     @Override
-    public void notifyDexLoad(String loadingPackageName, List<String> dexPaths, String loaderIsa) {
+    public void notifyDexLoad(String loadingPackageName, List<String> classLoaderNames,
+            List<String> classPaths, String loaderIsa) {
         int userId = UserHandle.getCallingUserId();
         ApplicationInfo ai = getApplicationInfo(loadingPackageName, /*flags*/ 0, userId);
         if (ai == null) {
@@ -9448,7 +9470,7 @@
                 + loadingPackageName + ", user=" + userId);
             return;
         }
-        mDexManager.notifyDexLoad(ai, dexPaths, loaderIsa, userId);
+        mDexManager.notifyDexLoad(ai, classLoaderNames, classPaths, loaderIsa, userId);
     }
 
     @Override
@@ -9476,17 +9498,53 @@
         }
     }
 
+    /**
+     * Ask the package manager to perform a dex-opt with the given compiler filter.
+     *
+     * Note: exposed only for the shell command to allow moving packages explicitly to a
+     *       definite state.
+     */
     @Override
-    public boolean performDexOpt(String packageName,
-            boolean checkProfiles, int compileReason, boolean force, boolean bootComplete) {
+    public boolean performDexOptMode(String packageName,
+            boolean checkProfiles, String targetCompilerFilter, boolean force,
+            boolean bootComplete, String splitName) {
+        int flags = (checkProfiles ? DexoptOptions.DEXOPT_CHECK_FOR_PROFILES_UPDATES : 0) |
+                (force ? DexoptOptions.DEXOPT_FORCE : 0) |
+                (bootComplete ? DexoptOptions.DEXOPT_BOOT_COMPLETE : 0);
+        return performDexOpt(new DexoptOptions(packageName, targetCompilerFilter,
+                splitName, flags));
+    }
+
+    /**
+     * Ask the package manager to perform a dex-opt with the given compiler filter on the
+     * secondary dex files belonging to the given package.
+     *
+     * Note: exposed only for the shell command to allow moving packages explicitly to a
+     *       definite state.
+     */
+    @Override
+    public boolean performDexOptSecondary(String packageName, String compilerFilter,
+            boolean force) {
+        int flags = DexoptOptions.DEXOPT_ONLY_SECONDARY_DEX |
+                DexoptOptions.DEXOPT_CHECK_FOR_PROFILES_UPDATES |
+                DexoptOptions.DEXOPT_BOOT_COMPLETE |
+                (force ? DexoptOptions.DEXOPT_FORCE : 0);
+        return performDexOpt(new DexoptOptions(packageName, compilerFilter, flags));
+    }
+
+    /*package*/ boolean performDexOpt(DexoptOptions options) {
         if (getInstantAppPackageName(Binder.getCallingUid()) != null) {
             return false;
-        } else if (isInstantApp(packageName, UserHandle.getCallingUserId())) {
+        } else if (isInstantApp(options.getPackageName(), UserHandle.getCallingUserId())) {
             return false;
         }
-        int dexoptStatus = performDexOptWithStatus(
-              packageName, checkProfiles, compileReason, force, bootComplete);
-        return dexoptStatus != PackageDexOptimizer.DEX_OPT_FAILED;
+
+        if (options.isDexoptOnlySecondaryDex()) {
+            return mDexManager.dexoptSecondaryDex(options);
+        } else {
+            int dexoptStatus = performDexOptWithStatus(options);
+            return dexoptStatus != PackageDexOptimizer.DEX_OPT_FAILED;
+        }
     }
 
     /**
@@ -9495,33 +9553,14 @@
      *  {@link PackageDexOptimizer#DEX_OPT_PERFORMED}
      *  {@link PackageDexOptimizer#DEX_OPT_FAILED}
      */
-    /* package */ int performDexOptWithStatus(String packageName,
-            boolean checkProfiles, int compileReason, boolean force, boolean bootComplete) {
-        return performDexOptTraced(packageName, checkProfiles,
-                getCompilerFilterForReason(compileReason), force, bootComplete);
+    /* package */ int performDexOptWithStatus(DexoptOptions options) {
+        return performDexOptTraced(options);
     }
 
-    @Override
-    public boolean performDexOptMode(String packageName,
-            boolean checkProfiles, String targetCompilerFilter, boolean force,
-            boolean bootComplete) {
-        if (getInstantAppPackageName(Binder.getCallingUid()) != null) {
-            return false;
-        } else if (isInstantApp(packageName, UserHandle.getCallingUserId())) {
-            return false;
-        }
-        int dexOptStatus = performDexOptTraced(packageName, checkProfiles,
-                targetCompilerFilter, force, bootComplete);
-        return dexOptStatus != PackageDexOptimizer.DEX_OPT_FAILED;
-    }
-
-    private int performDexOptTraced(String packageName,
-                boolean checkProfiles, String targetCompilerFilter, boolean force,
-                boolean bootComplete) {
+    private int performDexOptTraced(DexoptOptions options) {
         Trace.traceBegin(TRACE_TAG_PACKAGE_MANAGER, "dexopt");
         try {
-            return performDexOptInternal(packageName, checkProfiles,
-                    targetCompilerFilter, force, bootComplete);
+            return performDexOptInternal(options);
         } finally {
             Trace.traceEnd(TRACE_TAG_PACKAGE_MANAGER);
         }
@@ -9529,12 +9568,10 @@
 
     // Run dexopt on a given package. Returns true if dexopt did not fail, i.e.
     // if the package can now be considered up to date for the given filter.
-    private int performDexOptInternal(String packageName,
-                boolean checkProfiles, String targetCompilerFilter, boolean force,
-                boolean bootComplete) {
+    private int performDexOptInternal(DexoptOptions options) {
         PackageParser.Package p;
         synchronized (mPackages) {
-            p = mPackages.get(packageName);
+            p = mPackages.get(options.getPackageName());
             if (p == null) {
                 // Package could not be found. Report failure.
                 return PackageDexOptimizer.DEX_OPT_FAILED;
@@ -9545,8 +9582,7 @@
         long callingId = Binder.clearCallingIdentity();
         try {
             synchronized (mInstallLock) {
-                return performDexOptInternalWithDependenciesLI(p, checkProfiles,
-                        targetCompilerFilter, force, bootComplete);
+                return performDexOptInternalWithDependenciesLI(p, options);
             }
         } finally {
             Binder.restoreCallingIdentity(callingId);
@@ -9566,12 +9602,11 @@
     }
 
     private int performDexOptInternalWithDependenciesLI(PackageParser.Package p,
-            boolean checkProfiles, String targetCompilerFilter,
-            boolean force, boolean bootComplete) {
+            DexoptOptions options) {
         // Select the dex optimizer based on the force parameter.
         // Note: The force option is rarely used (cmdline input for testing, mostly), so it's OK to
         //       allocate an object here.
-        PackageDexOptimizer pdo = force
+        PackageDexOptimizer pdo = options.isForce()
                 ? new PackageDexOptimizer.ForcedUpdatePackageDexOptimizer(mPackageDexOptimizer)
                 : mPackageDexOptimizer;
 
@@ -9585,39 +9620,19 @@
         Collection<PackageParser.Package> deps = findSharedNonSystemLibraries(p);
         final String[] instructionSets = getAppDexInstructionSets(p.applicationInfo);
         if (!deps.isEmpty()) {
+            DexoptOptions libraryOptions = new DexoptOptions(options.getPackageName(),
+                    options.getCompilerFilter(), options.getSplitName(),
+                    options.getFlags() | DexoptOptions.DEXOPT_AS_SHARED_LIBRARY);
             for (PackageParser.Package depPackage : deps) {
                 // TODO: Analyze and investigate if we (should) profile libraries.
                 pdo.performDexOpt(depPackage, null /* sharedLibraries */, instructionSets,
-                        false /* checkProfiles */,
-                        targetCompilerFilter,
                         getOrCreateCompilerPackageStats(depPackage),
-                        true /* isUsedByOtherApps */,
-                        bootComplete);
+                    mDexManager.getPackageUseInfoOrDefault(depPackage.packageName), libraryOptions);
             }
         }
-        return pdo.performDexOpt(p, p.usesLibraryFiles, instructionSets, checkProfiles,
-                targetCompilerFilter, getOrCreateCompilerPackageStats(p),
-                mDexManager.isUsedByOtherApps(p.packageName), bootComplete);
-    }
-
-    // Performs dexopt on the used secondary dex files belonging to the given package.
-    // Returns true if all dex files were process successfully (which could mean either dexopt or
-    // skip). Returns false if any of the files caused errors.
-    @Override
-    public boolean performDexOptSecondary(String packageName, String compilerFilter,
-            boolean force) {
-        if (getInstantAppPackageName(Binder.getCallingUid()) != null) {
-            return false;
-        } else if (isInstantApp(packageName, UserHandle.getCallingUserId())) {
-            return false;
-        }
-        mDexManager.reconcileSecondaryDexFiles(packageName);
-        return mDexManager.dexoptSecondaryDex(packageName, compilerFilter, force);
-    }
-
-    public boolean performDexOptSecondary(String packageName, int compileReason,
-            boolean force) {
-        return mDexManager.dexoptSecondaryDex(packageName, compileReason, force);
+        return pdo.performDexOpt(p, p.usesLibraryFiles, instructionSets,
+                getOrCreateCompilerPackageStats(p),
+                mDexManager.getPackageUseInfoOrDefault(p.packageName), options);
     }
 
     /**
@@ -9743,6 +9758,7 @@
     public void shutdown() {
         mPackageUsage.writeNow(mPackages);
         mCompilerStats.writeNow();
+        mDexManager.writePackageDexUsageNow();
     }
 
     @Override
@@ -9793,10 +9809,11 @@
 
             // Whoever is calling forceDexOpt wants a compiled package.
             // Don't use profiles since that may cause compilation to be skipped.
-            final int res = performDexOptInternalWithDependenciesLI(pkg,
-                    false /* checkProfiles */, getDefaultCompilerFilter(),
-                    true /* force */,
-                    true /* bootComplete */);
+            final int res = performDexOptInternalWithDependenciesLI(
+                    pkg,
+                    new DexoptOptions(packageName,
+                            getDefaultCompilerFilter(),
+                            DexoptOptions.DEXOPT_FORCE | DexoptOptions.DEXOPT_BOOT_COMPLETE));
 
             Trace.traceEnd(TRACE_TAG_PACKAGE_MANAGER);
             if (res != PackageDexOptimizer.DEX_OPT_PERFORMED) {
@@ -16227,7 +16244,7 @@
         }
     }
 
-    private void removeDexFiles(List<String> allCodePaths, String[] instructionSets) {
+    void removeDexFiles(List<String> allCodePaths, String[] instructionSets) {
         if (!allCodePaths.isEmpty()) {
             if (instructionSets == null) {
                 throw new IllegalStateException("instructionSet == null");
@@ -18260,12 +18277,14 @@
                 // method because `pkg` may not be in `mPackages` yet.
                 //
                 // Also, don't fail application installs if the dexopt step fails.
+                DexoptOptions dexoptOptions = new DexoptOptions(pkg.packageName,
+                        REASON_INSTALL,
+                        DexoptOptions.DEXOPT_BOOT_COMPLETE);
                 mPackageDexOptimizer.performDexOpt(pkg, pkg.usesLibraryFiles,
-                        null /* instructionSets */, false /* checkProfiles */,
-                        getCompilerFilterForReason(REASON_INSTALL),
+                        null /* instructionSets */,
                         getOrCreateCompilerPackageStats(pkg),
-                        mDexManager.isUsedByOtherApps(pkg.packageName),
-                        true /* bootComplete */);
+                        mDexManager.getPackageUseInfoOrDefault(pkg.packageName),
+                        dexoptOptions);
                 Trace.traceEnd(TRACE_TAG_PACKAGE_MANAGER);
             }
 
@@ -22536,7 +22555,8 @@
         for (PackageParser.Package pkg : packages) {
             ipw.println("[" + pkg.packageName + "]");
             ipw.increaseIndent();
-            mPackageDexOptimizer.dumpDexoptState(ipw, pkg);
+            mPackageDexOptimizer.dumpDexoptState(ipw, pkg,
+                    mDexManager.getPackageUseInfoOrDefault(pkg.packageName));
             ipw.decreaseIndent();
         }
     }
@@ -25039,6 +25059,29 @@
             }
         }
     }
+
+    Set<String> getUnusedPackages(long downgradeTimeThresholdMillis) {
+        Set<String> unusedPackages = new HashSet<>();
+        long currentTimeInMillis = System.currentTimeMillis();
+        synchronized (mPackages) {
+            for (PackageParser.Package pkg : mPackages.values()) {
+                PackageSetting ps =  mSettings.mPackages.get(pkg.packageName);
+                if (ps == null) {
+                    continue;
+                }
+                PackageDexUsage.PackageUseInfo packageUseInfo =
+                      getDexManager().getPackageUseInfoOrDefault(pkg.packageName);
+                if (PackageManagerServiceUtils
+                        .isUnusedSinceTimeInMillis(ps.firstInstallTime, currentTimeInMillis,
+                                downgradeTimeThresholdMillis, packageUseInfo,
+                                pkg.getLatestPackageUseTimeInMills(),
+                                pkg.getLatestForegroundPackageUseTimeInMills())) {
+                    unusedPackages.add(pkg.packageName);
+                }
+            }
+        }
+        return unusedPackages;
+    }
 }
 
 interface PackageSender {
diff --git a/services/core/java/com/android/server/pm/PackageManagerServiceCompilerMapping.java b/services/core/java/com/android/server/pm/PackageManagerServiceCompilerMapping.java
index ec248f5..0a9480b 100644
--- a/services/core/java/com/android/server/pm/PackageManagerServiceCompilerMapping.java
+++ b/services/core/java/com/android/server/pm/PackageManagerServiceCompilerMapping.java
@@ -26,7 +26,7 @@
 public class PackageManagerServiceCompilerMapping {
     // Names for compilation reasons.
     static final String REASON_STRINGS[] = {
-            "first-boot", "boot", "install", "bg-dexopt", "ab-ota"
+            "first-boot", "boot", "install", "bg-dexopt", "ab-ota", "inactive"
     };
 
     // Static block to ensure the strings array is of the right length.
@@ -47,7 +47,16 @@
     // Load the property for the given reason and check for validity. This will throw an
     // exception in case the reason or value are invalid.
     private static String getAndCheckValidity(int reason) {
-        String sysPropValue = SystemProperties.get(getSystemPropertyName(reason));
+        String sysPropName = getSystemPropertyName(reason);
+        String sysPropValue;
+        // TODO: This is a temporary hack to keep marlin booting on aosp/master while we
+        // figure out how to deal with these system properties that currently appear on
+        // vendor.
+        if ("pm.dexopt.inactive".equals(sysPropName)) {
+            sysPropValue = "verify";
+        } else {
+            sysPropValue = SystemProperties.get(sysPropName);
+        }
         if (sysPropValue == null || sysPropValue.isEmpty() ||
                 !DexFile.isValidCompilerFilter(sysPropValue)) {
             throw new IllegalStateException("Value \"" + sysPropValue +"\" not valid "
diff --git a/services/core/java/com/android/server/pm/PackageManagerServiceUtils.java b/services/core/java/com/android/server/pm/PackageManagerServiceUtils.java
index eb1e7bd..1e0ce7a 100644
--- a/services/core/java/com/android/server/pm/PackageManagerServiceUtils.java
+++ b/services/core/java/com/android/server/pm/PackageManagerServiceUtils.java
@@ -16,6 +16,9 @@
 
 package com.android.server.pm;
 
+import com.android.server.pm.dex.DexManager;
+import com.android.server.pm.dex.PackageDexUsage;
+
 import static com.android.server.pm.PackageManagerService.DEBUG_DEXOPT;
 import static com.android.server.pm.PackageManagerService.TAG;
 
@@ -140,9 +143,11 @@
                 sortTemp, packageManagerService);
 
         // Give priority to apps used by other apps.
+        DexManager dexManager = packageManagerService.getDexManager();
         applyPackageFilter((pkg) ->
-                packageManagerService.getDexManager().isUsedByOtherApps(pkg.packageName), result,
-                remainingPkgs, sortTemp, packageManagerService);
+                dexManager.getPackageUseInfoOrDefault(pkg.packageName)
+                        .isAnyCodePathUsedByOtherApps(),
+                result, remainingPkgs, sortTemp, packageManagerService);
 
         // Filter out packages that aren't recently used, add all remaining apps.
         // TODO: add a property to control this?
@@ -186,6 +191,41 @@
     }
 
     /**
+     * Checks if the package was inactive during since <code>thresholdTimeinMillis</code>.
+     * Package is considered active, if:
+     * 1) It was active in foreground.
+     * 2) It was active in background and also used by other apps.
+     *
+     * If it doesn't have sufficient information about the package, it return <code>false</code>.
+     */
+    static boolean isUnusedSinceTimeInMillis(long firstInstallTime, long currentTimeInMillis,
+            long thresholdTimeinMillis, PackageDexUsage.PackageUseInfo packageUseInfo,
+            long latestPackageUseTimeInMillis, long latestForegroundPackageUseTimeInMillis) {
+
+        if (currentTimeInMillis - firstInstallTime < thresholdTimeinMillis) {
+            return false;
+        }
+
+        // If the app was active in foreground during the threshold period.
+        boolean isActiveInForeground = (currentTimeInMillis
+                - latestForegroundPackageUseTimeInMillis)
+                < thresholdTimeinMillis;
+
+        if (isActiveInForeground) {
+            return false;
+        }
+
+        // If the app was active in background during the threshold period and was used
+        // by other packages.
+        boolean isActiveInBackgroundAndUsedByOtherPackages = ((currentTimeInMillis
+                - latestPackageUseTimeInMillis)
+                < thresholdTimeinMillis)
+                && packageUseInfo.isAnyCodePathUsedByOtherApps();
+
+        return !isActiveInBackgroundAndUsedByOtherPackages;
+    }
+
+    /**
      * Returns the canonicalized path of {@code path} as per {@code realpath(3)}
      * semantics.
      */
diff --git a/services/core/java/com/android/server/pm/PackageManagerShellCommand.java b/services/core/java/com/android/server/pm/PackageManagerShellCommand.java
index 20d7b28..10ceba4 100644
--- a/services/core/java/com/android/server/pm/PackageManagerShellCommand.java
+++ b/services/core/java/com/android/server/pm/PackageManagerShellCommand.java
@@ -365,6 +365,7 @@
         String compilationReason = null;
         String checkProfilesRaw = null;
         boolean secondaryDex = false;
+        String split = null;
 
         String opt;
         while ((opt = getNextOption()) != null) {
@@ -395,6 +396,9 @@
                 case "--secondary-dex":
                     secondaryDex = true;
                     break;
+                case "--split":
+                    split = getNextArgRequired();
+                    break;
                 default:
                     pw.println("Error: Unknown option: " + opt);
                     return 1;
@@ -423,6 +427,16 @@
             return 1;
         }
 
+        if (allPackages && split != null) {
+            pw.println("-a cannot be specified together with --split");
+            return 1;
+        }
+
+        if (secondaryDex && split != null) {
+            pw.println("--secondary-dex cannot be specified together with --split");
+            return 1;
+        }
+
         String targetCompilerFilter;
         if (compilerFilter != null) {
             if (!DexFile.isValidCompilerFilter(compilerFilter)) {
@@ -472,7 +486,7 @@
                             targetCompilerFilter, forceCompilation)
                     : mInterface.performDexOptMode(packageName,
                             checkProfiles, targetCompilerFilter, forceCompilation,
-                            true /* bootComplete */);
+                            true /* bootComplete */, split);
             if (!result) {
                 failedPackages.add(packageName);
             }
@@ -1609,7 +1623,7 @@
         pw.println("  help");
         pw.println("    Print this help text.");
         pw.println("");
-        pw.println("  compile [-m MODE | -r REASON] [-f] [-c]");
+        pw.println("  compile [-m MODE | -r REASON] [-f] [-c] [--split SPLIT_NAME]");
         pw.println("          [--reset] [--check-prof (true | false)] (-a | TARGET-PACKAGE)");
         pw.println("    Trigger compilation of TARGET-PACKAGE or all packages if \"-a\".");
         pw.println("    Options:");
@@ -1635,6 +1649,7 @@
         pw.println("      --reset: restore package to its post-install state");
         pw.println("      --check-prof (true | false): look at profiles when doing dexopt?");
         pw.println("      --secondary-dex: compile app secondary dex files");
+        pw.println("      --split SPLIT: compile only the given split name");
         pw.println("  bg-dexopt-job");
         pw.println("    Execute the background optimizations immediately.");
         pw.println("    Note that the command only runs the background optimizer logic. It may");
diff --git a/services/core/java/com/android/server/pm/dex/DexManager.java b/services/core/java/com/android/server/pm/dex/DexManager.java
index be50eee..6274754 100644
--- a/services/core/java/com/android/server/pm/dex/DexManager.java
+++ b/services/core/java/com/android/server/pm/dex/DexManager.java
@@ -36,6 +36,8 @@
 
 import java.io.File;
 import java.io.IOException;
+import java.util.Collection;
+import java.util.Collections;
 import java.util.List;
 import java.util.HashMap;
 import java.util.HashSet;
@@ -81,6 +83,19 @@
     private static int DEX_SEARCH_FOUND_SPLIT = 2;  // dex file is a split apk
     private static int DEX_SEARCH_FOUND_SECONDARY = 3;  // dex file is a secondary dex
 
+    /**
+     * We do not record packages that have no secondary dex files or that are not used by other
+     * apps. This is an optimization to reduce the amount of data that needs to be written to
+     * disk (apps will not usually be shared so this trims quite a bit the number we record).
+     *
+     * To make this behaviour transparent to the callers which need use information on packages,
+     * DexManager will return this DEFAULT instance from
+     * {@link DexManager#getPackageUseInfoOrDefault}. It has no data about secondary dex files and
+     * is marked as not being used by other apps. This reflects the intended behaviour when we don't
+     * find the package in the underlying data file.
+     */
+    private final static PackageUseInfo DEFAULT_USE_INFO = new PackageUseInfo();
+
     public DexManager(IPackageManager pms, PackageDexOptimizer pdo,
             Installer installer, Object installLock) {
       mPackageCodeLocationsCache = new HashMap<>();
@@ -97,29 +112,55 @@
      * return as fast as possible.
      *
      * @param loadingAppInfo the package performing the load
-     * @param dexPaths the list of dex files being loaded
+     * @param classLoadersNames the names of the class loaders present in the loading chain. The
+     *    list encodes the class loader chain in the natural order. The first class loader has
+     *    the second one as its parent and so on. The dex files present in the class path of the
+     *    first class loader will be recorded in the usage file.
+     * @param classPaths the class paths corresponding to the class loaders names from
+     *     {@param classLoadersNames}. The the first element corresponds to the first class loader
+     *     and so on. A classpath is represented as a list of dex files separated by
+     *     {@code File.pathSeparator}.
+     *     The dex files found in the first class path will be recorded in the usage file.
      * @param loaderIsa the ISA of the app loading the dex files
      * @param loaderUserId the user id which runs the code loading the dex files
      */
-    public void notifyDexLoad(ApplicationInfo loadingAppInfo, List<String> dexPaths,
-            String loaderIsa, int loaderUserId) {
+    public void notifyDexLoad(ApplicationInfo loadingAppInfo, List<String> classLoadersNames,
+            List<String> classPaths, String loaderIsa, int loaderUserId) {
         try {
-            notifyDexLoadInternal(loadingAppInfo, dexPaths, loaderIsa, loaderUserId);
+            notifyDexLoadInternal(loadingAppInfo, classLoadersNames, classPaths, loaderIsa,
+                    loaderUserId);
         } catch (Exception e) {
             Slog.w(TAG, "Exception while notifying dex load for package " +
                     loadingAppInfo.packageName, e);
         }
     }
 
-    private void notifyDexLoadInternal(ApplicationInfo loadingAppInfo, List<String> dexPaths,
-            String loaderIsa, int loaderUserId) {
+    private void notifyDexLoadInternal(ApplicationInfo loadingAppInfo,
+            List<String> classLoaderNames, List<String> classPaths, String loaderIsa,
+            int loaderUserId) {
+        if (classLoaderNames.size() != classPaths.size()) {
+            Slog.wtf(TAG, "Bad call to noitfyDexLoad: args have different size");
+            return;
+        }
+        if (classLoaderNames.isEmpty()) {
+            Slog.wtf(TAG, "Bad call to notifyDexLoad: class loaders list is empty");
+            return;
+        }
         if (!PackageManagerServiceUtils.checkISA(loaderIsa)) {
-            Slog.w(TAG, "Loading dex files " + dexPaths + " in unsupported ISA: " +
+            Slog.w(TAG, "Loading dex files " + classPaths + " in unsupported ISA: " +
                     loaderIsa + "?");
             return;
         }
 
-        for (String dexPath : dexPaths) {
+        // The classpath is represented as a list of dex files separated by File.pathSeparator.
+        String[] dexPathsToRegister = classPaths.get(0).split(File.pathSeparator);
+
+        // Encode the class loader contexts for the dexPathsToRegister.
+        String[] classLoaderContexts = DexoptUtils.processContextForDexLoad(
+                classLoaderNames, classPaths);
+
+        int dexPathIndex = 0;
+        for (String dexPath : dexPathsToRegister) {
             // Find the owning package name.
             DexSearchResult searchResult = getDexPackage(loadingAppInfo, dexPath, loaderUserId);
 
@@ -147,23 +188,25 @@
                 // Record dex file usage. If the current usage is a new pattern (e.g. new secondary,
                 // or UsedBytOtherApps), record will return true and we trigger an async write
                 // to disk to make sure we don't loose the data in case of a reboot.
+
+                // A null classLoaderContexts means that there are unsupported class loaders in the
+                // chain.
+                String classLoaderContext = classLoaderContexts == null
+                        ? PackageDexUsage.UNSUPPORTED_CLASS_LOADER_CONTEXT
+                        : classLoaderContexts[dexPathIndex];
                 if (mPackageDexUsage.record(searchResult.mOwningPackageName,
-                        dexPath, loaderUserId, loaderIsa, isUsedByOtherApps, primaryOrSplit)) {
+                        dexPath, loaderUserId, loaderIsa, isUsedByOtherApps, primaryOrSplit,
+                        loadingAppInfo.packageName, classLoaderContext)) {
                     mPackageDexUsage.maybeWriteAsync();
                 }
             } else {
-                // This can happen in a few situations:
-                // - bogus dex loads
-                // - recent installs/uninstalls that we didn't detect.
-                // - new installed splits
                 // If we can't find the owner of the dex we simply do not track it. The impact is
                 // that the dex file will not be considered for offline optimizations.
-                // TODO(calin): add hooks for move/uninstall notifications to
-                // capture package moves or obsolete packages.
                 if (DEBUG) {
                     Slog.i(TAG, "Could not find owning package for dex file: " + dexPath);
                 }
             }
+            dexPathIndex++;
         }
     }
 
@@ -269,6 +312,8 @@
 
     private void loadInternal(Map<Integer, List<PackageInfo>> existingPackages) {
         Map<String, Set<Integer>> packageToUsersMap = new HashMap<>();
+        Map<String, Set<String>> packageToCodePaths = new HashMap<>();
+
         // Cache the code locations for the installed packages. This allows for
         // faster lookups (no locks) when finding what package owns the dex file.
         for (Map.Entry<Integer, List<PackageInfo>> entry : existingPackages.entrySet()) {
@@ -278,54 +323,72 @@
                 // Cache the code locations.
                 cachePackageInfo(pi, userId);
 
-                // Cache a map from package name to the set of user ids who installed the package.
+                // Cache two maps:
+                //   - from package name to the set of user ids who installed the package.
+                //   - from package name to the set of code paths.
                 // We will use it to sync the data and remove obsolete entries from
                 // mPackageDexUsage.
                 Set<Integer> users = putIfAbsent(
                         packageToUsersMap, pi.packageName, new HashSet<>());
                 users.add(userId);
+
+                Set<String> codePaths = putIfAbsent(
+                    packageToCodePaths, pi.packageName, new HashSet<>());
+                codePaths.add(pi.applicationInfo.sourceDir);
+                if (pi.applicationInfo.splitSourceDirs != null) {
+                    Collections.addAll(codePaths, pi.applicationInfo.splitSourceDirs);
+                }
             }
         }
 
         mPackageDexUsage.read();
-        mPackageDexUsage.syncData(packageToUsersMap);
+        mPackageDexUsage.syncData(packageToUsersMap, packageToCodePaths);
     }
 
     /**
      * Get the package dex usage for the given package name.
-     * @return the package data or null if there is no data available for this package.
+     * If there is no usage info the method will return a default {@code PackageUseInfo} with
+     * no data about secondary dex files and marked as not being used by other apps.
+     *
+     * Note that no use info means the package was not used or it was used but not by other apps.
+     * Also, note that right now we might prune packages which are not used by other apps.
+     * TODO(calin): maybe we should not (prune) so we can have an accurate view when we try
+     * to access the package use.
      */
-    public PackageUseInfo getPackageUseInfo(String packageName) {
-        return mPackageDexUsage.getPackageUseInfo(packageName);
+    public PackageUseInfo getPackageUseInfoOrDefault(String packageName) {
+        PackageUseInfo useInfo = mPackageDexUsage.getPackageUseInfo(packageName);
+        return useInfo == null ? DEFAULT_USE_INFO : useInfo;
     }
 
     /**
-     * Perform dexopt on the package {@code packageName} secondary dex files.
-     * @return true if all secondary dex files were processed successfully (compiled or skipped
-     *         because they don't need to be compiled)..
+     * Return whether or not the manager has usage information on the give package.
+     *
+     * Note that no use info means the package was not used or it was used but not by other apps.
+     * Also, note that right now we might prune packages which are not used by other apps.
+     * TODO(calin): maybe we should not (prune) so we can have an accurate view when we try
+     * to access the package use.
      */
-    public boolean dexoptSecondaryDex(String packageName, int compilerReason, boolean force) {
-        return dexoptSecondaryDex(packageName,
-                PackageManagerServiceCompilerMapping.getCompilerFilterForReason(compilerReason),
-                force);
+    /*package*/ boolean hasInfoOnPackage(String packageName) {
+        return mPackageDexUsage.getPackageUseInfo(packageName) != null;
     }
 
     /**
-     * Perform dexopt on the package {@code packageName} secondary dex files.
+     * Perform dexopt on with the given {@code options} on the secondary dex files.
      * @return true if all secondary dex files were processed successfully (compiled or skipped
      *         because they don't need to be compiled)..
      */
-    public boolean dexoptSecondaryDex(String packageName, String compilerFilter, boolean force) {
+    public boolean dexoptSecondaryDex(DexoptOptions options) {
         // Select the dex optimizer based on the force parameter.
         // Forced compilation is done through ForcedUpdatePackageDexOptimizer which will adjust
         // the necessary dexopt flags to make sure that compilation is not skipped. This avoid
         // passing the force flag through the multitude of layers.
         // Note: The force option is rarely used (cmdline input for testing, mostly), so it's OK to
         //       allocate an object here.
-        PackageDexOptimizer pdo = force
+        PackageDexOptimizer pdo = options.isForce()
                 ? new PackageDexOptimizer.ForcedUpdatePackageDexOptimizer(mPackageDexOptimizer)
                 : mPackageDexOptimizer;
-        PackageUseInfo useInfo = getPackageUseInfo(packageName);
+        String packageName = options.getPackageName();
+        PackageUseInfo useInfo = getPackageUseInfoOrDefault(packageName);
         if (useInfo == null || useInfo.getDexUseInfoMap().isEmpty()) {
             if (DEBUG) {
                 Slog.d(TAG, "No secondary dex use for package:" + packageName);
@@ -337,7 +400,8 @@
         for (Map.Entry<String, DexUseInfo> entry : useInfo.getDexUseInfoMap().entrySet()) {
             String dexPath = entry.getKey();
             DexUseInfo dexUseInfo = entry.getValue();
-            PackageInfo pkg = null;
+
+            PackageInfo pkg;
             try {
                 pkg = mPackageManager.getPackageInfo(packageName, /*flags*/0,
                     dexUseInfo.getOwnerUserId());
@@ -356,7 +420,7 @@
             }
 
             int result = pdo.dexOptSecondaryDexPath(pkg.applicationInfo, dexPath,
-                    dexUseInfo.getLoaderIsas(), compilerFilter, dexUseInfo.isUsedByOtherApps());
+                    dexUseInfo, options);
             success = success && (result != PackageDexOptimizer.DEX_OPT_FAILED);
         }
         return success;
@@ -368,7 +432,7 @@
      * deleted, update the internal records and delete any generated oat files.
      */
     public void reconcileSecondaryDexFiles(String packageName) {
-        PackageUseInfo useInfo = getPackageUseInfo(packageName);
+        PackageUseInfo useInfo = getPackageUseInfoOrDefault(packageName);
         if (useInfo == null || useInfo.getDexUseInfoMap().isEmpty()) {
             if (DEBUG) {
                 Slog.d(TAG, "No secondary dex use for package:" + packageName);
@@ -439,6 +503,8 @@
         }
     }
 
+    // TODO(calin): questionable API in the presence of class loaders context. Needs amends as the
+    // compilation happening here will use a pessimistic context.
     public RegisterDexModuleResult registerDexModule(ApplicationInfo info, String dexPath,
             boolean isUsedByOtherApps, int userId) {
         // Find the owning package record.
@@ -457,11 +523,11 @@
 
         // We found the package. Now record the usage for all declared ISAs.
         boolean update = false;
-        Set<String> isas = new HashSet<>();
         for (String isa : getAppDexInstructionSets(info)) {
-            isas.add(isa);
             boolean newUpdate = mPackageDexUsage.record(searchResult.mOwningPackageName,
-                dexPath, userId, isa, isUsedByOtherApps, /*primaryOrSplit*/ false);
+                    dexPath, userId, isa, isUsedByOtherApps, /*primaryOrSplit*/ false,
+                    searchResult.mOwningPackageName,
+                    PackageDexUsage.UNKNOWN_CLASS_LOADER_CONTEXT);
             update |= newUpdate;
         }
         if (update) {
@@ -471,8 +537,13 @@
         // Try to optimize the package according to the install reason.
         String compilerFilter = PackageManagerServiceCompilerMapping.getCompilerFilterForReason(
                 PackageManagerService.REASON_INSTALL);
-        int result = mPackageDexOptimizer.dexOptSecondaryDexPath(info, dexPath, isas,
-                compilerFilter, isUsedByOtherApps);
+        DexUseInfo dexUseInfo = mPackageDexUsage.getPackageUseInfo(searchResult.mOwningPackageName)
+                .getDexUseInfoMap().get(dexPath);
+
+        DexoptOptions options = new DexoptOptions(info.packageName, compilerFilter, /*flags*/0);
+
+        int result = mPackageDexOptimizer.dexOptSecondaryDexPath(info, dexPath, dexUseInfo,
+                options);
 
         // If we fail to optimize the package log an error but don't propagate the error
         // back to the app. The app cannot do much about it and the background job
@@ -493,23 +564,6 @@
     }
 
     /**
-     * Return true if the profiling data collected for the given app indicate
-     * that the apps's APK has been loaded by another app.
-     * Note that this returns false for all apps without any collected profiling data.
-    */
-    public boolean isUsedByOtherApps(String packageName) {
-        PackageUseInfo useInfo = getPackageUseInfo(packageName);
-        if (useInfo == null) {
-            // No use info, means the package was not used or it was used but not by other apps.
-            // Note that right now we might prune packages which are not used by other apps.
-            // TODO(calin): maybe we should not (prune) so we can have an accurate view when we try
-            // to access the package use.
-            return false;
-        }
-        return useInfo.isUsedByOtherApps();
-    }
-
-    /**
      * Retrieves the package which owns the given dexPath.
      */
     private DexSearchResult getDexPackage(
@@ -566,6 +620,13 @@
         return existingValue == null ? newValue : existingValue;
     }
 
+    /**
+     * Writes the in-memory package dex usage to disk right away.
+     */
+    public void writePackageDexUsageNow() {
+        mPackageDexUsage.writeNow();
+    }
+
     public static class RegisterDexModuleResult {
         public RegisterDexModuleResult() {
             this(false, null);
diff --git a/services/core/java/com/android/server/pm/dex/DexoptOptions.java b/services/core/java/com/android/server/pm/dex/DexoptOptions.java
new file mode 100644
index 0000000..0966770
--- /dev/null
+++ b/services/core/java/com/android/server/pm/dex/DexoptOptions.java
@@ -0,0 +1,151 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License
+ */
+
+package com.android.server.pm.dex;
+
+import static com.android.server.pm.PackageManagerServiceCompilerMapping.getCompilerFilterForReason;
+
+import android.annotation.Nullable;
+
+/**
+ * Options used for dexopt invocations.
+ */
+public final class DexoptOptions {
+    // When set, the profiles will be checked for updates before calling dexopt. If
+    // the apps profiles didn't update in a meaningful way (decided by the compiler), dexopt
+    // will be skipped.
+    // Currently this only affects the optimization of primary apks. Secondary dex files
+    // will always check the profiles for updates.
+    public static final int DEXOPT_CHECK_FOR_PROFILES_UPDATES = 1 << 0;
+
+    // When set, dexopt will execute unconditionally (even if not needed).
+    public static final int DEXOPT_FORCE = 1 << 1;
+
+    // Whether or not the invocation of dexopt is done after the boot is completed. This is used
+    // in order to adjust the priority of the compilation thread.
+    public static final int DEXOPT_BOOT_COMPLETE = 1 << 2;
+
+    // When set, the dexopt invocation will optimize only the secondary dex files. If false, dexopt
+    // will only consider the primary apk.
+    public static final int DEXOPT_ONLY_SECONDARY_DEX = 1 << 3;
+
+    // When set, dexopt will optimize only dex files that are used by other apps.
+    // Currently, this flag is ignored for primary apks.
+    public static final int DEXOPT_ONLY_SHARED_DEX = 1 << 4;
+
+    // When set, dexopt will attempt to scale down the optimizations previously applied in order
+    // save disk space.
+    public static final int DEXOPT_DOWNGRADE = 1 << 5;
+
+    // When set, dexopt will compile the dex file as a shared library even if it is not actually
+    // used by other apps. This is used to force the compilation or shared libraries declared
+    // with in the manifest with ''uses-library' before we have a chance to detect they are
+    // actually shared at runtime.
+    public static final int DEXOPT_AS_SHARED_LIBRARY = 1 << 6;
+
+    // When set, indicates that dexopt is invoked from the background service.
+    public static final int DEXOPT_IDLE_BACKGROUND_JOB = 1 << 9;
+
+    // The name of package to optimize.
+    private final String mPackageName;
+
+    // The intended target compiler filter. Note that dexopt might adjust the filter before the
+    // execution based on factors like: vmSafeMode and packageUsedByOtherApps.
+    private final String mCompilerFilter;
+
+    // The set of flags for the dexopt options. It's a mix of the DEXOPT_* flags.
+    private final int mFlags;
+
+    // When not null, dexopt will optimize only the split identified by this name.
+    // It only applies for primary apk and it's always null if mOnlySecondaryDex is true.
+    private final String mSplitName;
+
+    public DexoptOptions(String packageName, String compilerFilter, int flags) {
+        this(packageName, compilerFilter, /*splitName*/ null, flags);
+    }
+
+    public DexoptOptions(String packageName, int compilerReason, int flags) {
+        this(packageName, getCompilerFilterForReason(compilerReason), flags);
+    }
+
+    public DexoptOptions(String packageName, String compilerFilter, String splitName, int flags) {
+        int validityMask =
+                DEXOPT_CHECK_FOR_PROFILES_UPDATES |
+                DEXOPT_FORCE |
+                DEXOPT_BOOT_COMPLETE |
+                DEXOPT_ONLY_SECONDARY_DEX |
+                DEXOPT_ONLY_SHARED_DEX |
+                DEXOPT_DOWNGRADE |
+                DEXOPT_AS_SHARED_LIBRARY |
+                DEXOPT_IDLE_BACKGROUND_JOB;
+        if ((flags & (~validityMask)) != 0) {
+            throw new IllegalArgumentException("Invalid flags : " + Integer.toHexString(flags));
+        }
+
+        mPackageName = packageName;
+        mCompilerFilter = compilerFilter;
+        mFlags = flags;
+        mSplitName = splitName;
+    }
+
+    public String getPackageName() {
+        return mPackageName;
+    }
+
+    public boolean isCheckForProfileUpdates() {
+        return (mFlags & DEXOPT_CHECK_FOR_PROFILES_UPDATES) != 0;
+    }
+
+    public String getCompilerFilter() {
+        return mCompilerFilter;
+    }
+
+    public boolean isForce() {
+        return (mFlags & DEXOPT_FORCE) != 0;
+    }
+
+    public boolean isBootComplete() {
+        return (mFlags & DEXOPT_BOOT_COMPLETE) != 0;
+    }
+
+    public boolean isDexoptOnlySecondaryDex() {
+        return (mFlags & DEXOPT_ONLY_SECONDARY_DEX) != 0;
+    }
+
+    public boolean isDexoptOnlySharedDex() {
+        return (mFlags & DEXOPT_ONLY_SHARED_DEX) != 0;
+    }
+
+    public boolean isDowngrade() {
+        return (mFlags & DEXOPT_DOWNGRADE) != 0;
+    }
+
+    public boolean isDexoptAsSharedLibrary() {
+        return (mFlags & DEXOPT_AS_SHARED_LIBRARY) != 0;
+    }
+
+    public boolean isDexoptIdleBackgroundJob() {
+        return (mFlags & DEXOPT_IDLE_BACKGROUND_JOB) != 0;
+    }
+
+    public String getSplitName() {
+        return mSplitName;
+    }
+
+    public int getFlags() {
+        return mFlags;
+    }
+}
diff --git a/services/core/java/com/android/server/pm/dex/DexoptUtils.java b/services/core/java/com/android/server/pm/dex/DexoptUtils.java
new file mode 100644
index 0000000..bc8bf5e
--- /dev/null
+++ b/services/core/java/com/android/server/pm/dex/DexoptUtils.java
@@ -0,0 +1,327 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License
+ */
+
+package com.android.server.pm.dex;
+
+import android.content.pm.ApplicationInfo;
+import android.util.Slog;
+import android.util.SparseArray;
+
+import java.io.File;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+public final class DexoptUtils {
+    private static final String TAG = "DexoptUtils";
+
+    private DexoptUtils() {}
+
+    /**
+     * Creates the class loader context dependencies for each of the application code paths.
+     * The returned array contains the class loader contexts that needs to be passed to dexopt in
+     * order to ensure correct optimizations.
+     *
+     * A class loader context describes how the class loader chain should be built by dex2oat
+     * in order to ensure that classes are resolved during compilation as they would be resolved
+     * at runtime. The context will be encoded in the compiled code. If at runtime the dex file is
+     * loaded in a different context (with a different set of class loaders or a different
+     * classpath), the compiled code will be rejected.
+     *
+     * Note that the class loader context only includes dependencies and not the code path itself.
+     * The contexts are created based on the application split dependency list and
+     * the provided shared libraries.
+     *
+     * All the code paths encoded in the context will be relative to the base directory. This
+     * enables stage compilation where compiler artifacts may be moved around.
+     *
+     * The result is indexed as follows:
+     *   - index 0 contains the context for the base apk
+     *   - index 1 to n contain the context for the splits in the order determined by
+     *     {@code info.getSplitCodePaths()}
+     *
+     * IMPORTANT: keep this logic in sync with the loading code in {@link android.app.LoadedApk}
+     * and pay attention to the way the classpath is created for the non isolated mode in:
+     * {@link android.app.LoadedApk#makePaths(
+     * android.app.ActivityThread, boolean, ApplicationInfo, List, List)}.
+     */
+    public static String[] getClassLoaderContexts(ApplicationInfo info, String[] sharedLibraries) {
+        // The base class loader context contains only the shared library.
+        String sharedLibrariesClassPath = encodeClasspath(sharedLibraries);
+        String baseApkContextClassLoader = encodeClassLoader(
+                sharedLibrariesClassPath, "dalvik.system.PathClassLoader");
+
+        if (info.getSplitCodePaths() == null) {
+            // The application has no splits.
+            return new String[] {baseApkContextClassLoader};
+        }
+
+        // The application has splits. Compute their class loader contexts.
+
+        // First, cache the relative paths of the splits and do some sanity checks
+        String[] splitRelativeCodePaths = getSplitRelativeCodePaths(info);
+
+        // The splits have an implicit dependency on the base apk.
+        // This means that we have to add the base apk file in addition to the shared libraries.
+        String baseApkName = new File(info.getBaseCodePath()).getName();
+        String sharedLibrariesAndBaseClassPath =
+                encodeClasspath(sharedLibrariesClassPath, baseApkName);
+
+        // The result is stored in classLoaderContexts.
+        // Index 0 is the class loaded context for the base apk.
+        // Index `i` is the class loader context encoding for split `i`.
+        String[] classLoaderContexts = new String[/*base apk*/ 1 + splitRelativeCodePaths.length];
+        classLoaderContexts[0] = baseApkContextClassLoader;
+
+        if (!info.requestsIsolatedSplitLoading() || info.splitDependencies == null) {
+            // If the app didn't request for the splits to be loaded in isolation or if it does not
+            // declare inter-split dependencies, then all the splits will be loaded in the base
+            // apk class loader (in the order of their definition).
+            String classpath = sharedLibrariesAndBaseClassPath;
+            for (int i = 1; i < classLoaderContexts.length; i++) {
+                classLoaderContexts[i] = encodeClassLoader(classpath, "dalvik.system.PathClassLoader");
+                classpath = encodeClasspath(classpath, splitRelativeCodePaths[i - 1]);
+            }
+        } else {
+            // In case of inter-split dependencies, we need to walk the dependency chain of each
+            // split. We do this recursively and store intermediate results in classLoaderContexts.
+
+            // First, look at the split class loaders and cache their individual contexts (i.e.
+            // the class loader + the name of the split). This is an optimization to avoid
+            // re-computing them during the recursive call.
+            // The cache is stored in splitClassLoaderEncodingCache. The difference between this and
+            // classLoaderContexts is that the later contains the full chain of class loaders for
+            // a given split while splitClassLoaderEncodingCache only contains a single class loader
+            // encoding.
+            String[] splitClassLoaderEncodingCache = new String[splitRelativeCodePaths.length];
+            for (int i = 0; i < splitRelativeCodePaths.length; i++) {
+                splitClassLoaderEncodingCache[i] = encodeClassLoader(splitRelativeCodePaths[i],
+                        "dalvik.system.PathClassLoader");
+            }
+            String splitDependencyOnBase = encodeClassLoader(
+                    sharedLibrariesAndBaseClassPath, "dalvik.system.PathClassLoader");
+            SparseArray<int[]> splitDependencies = info.splitDependencies;
+            for (int i = 1; i < splitDependencies.size(); i++) {
+                getParentDependencies(splitDependencies.keyAt(i), splitClassLoaderEncodingCache,
+                        splitDependencies, classLoaderContexts, splitDependencyOnBase);
+            }
+
+            // At this point classLoaderContexts contains only the parent dependencies.
+            // We also need to add the class loader of the current split which should
+            // come first in the context.
+            for (int i = 1; i < classLoaderContexts.length; i++) {
+                String splitClassLoader = encodeClassLoader("", "dalvik.system.PathClassLoader");
+                classLoaderContexts[i] = encodeClassLoaderChain(
+                        splitClassLoader, classLoaderContexts[i]);
+            }
+        }
+
+        return classLoaderContexts;
+    }
+
+    /**
+     * Recursive method to generate the class loader context dependencies for the split with the
+     * given index. {@param classLoaderContexts} acts as an accumulator. Upton return
+     * {@code classLoaderContexts[index]} will contain the split dependency.
+     * During computation, the method may resolve the dependencies of other splits as it traverses
+     * the entire parent chain. The result will also be stored in {@param classLoaderContexts}.
+     *
+     * Note that {@code index 0} denotes the base apk and it is special handled. When the
+     * recursive call hits {@code index 0} the method returns {@code splitDependencyOnBase}.
+     * {@code classLoaderContexts[0]} is not modified in this method.
+     *
+     * @param index the index of the split (Note that index 0 denotes the base apk)
+     * @param splitClassLoaderEncodingCache the class loader encoding for the individual splits.
+     *    It contains only the split class loader and not the the base. The split
+     *    with {@code index} has its context at {@code splitClassLoaderEncodingCache[index - 1]}.
+     * @param splitDependencies the dependencies for all splits. Note that in this array index 0
+     *    is the base and splits start from index 1.
+     * @param classLoaderContexts the result accumulator. index 0 is the base and never set. Splits
+     *    start at index 1.
+     * @param splitDependencyOnBase the encoding of the implicit split dependency on base.
+     */
+    private static String getParentDependencies(int index, String[] splitClassLoaderEncodingCache,
+            SparseArray<int[]> splitDependencies, String[] classLoaderContexts,
+            String splitDependencyOnBase) {
+        // If we hit the base apk return its custom dependency list which is
+        // sharedLibraries + base.apk
+        if (index == 0) {
+            return splitDependencyOnBase;
+        }
+        // Return the result if we've computed the splitDependencies for this index already.
+        if (classLoaderContexts[index] != null) {
+            return classLoaderContexts[index];
+        }
+        // Get the splitDependencies for the parent of this index and append its path to it.
+        int parent = splitDependencies.get(index)[0];
+        String parentDependencies = getParentDependencies(parent, splitClassLoaderEncodingCache,
+                splitDependencies, classLoaderContexts, splitDependencyOnBase);
+
+        // The split context is: `parent context + parent dependencies context`.
+        String splitContext = (parent == 0) ?
+                parentDependencies :
+                encodeClassLoaderChain(splitClassLoaderEncodingCache[parent - 1], parentDependencies);
+        classLoaderContexts[index] = splitContext;
+        return splitContext;
+    }
+
+    /**
+     * Encodes the shared libraries classpathElements in a format accepted by dexopt.
+     * NOTE: Keep this in sync with the dexopt expectations! Right now that is
+     * a list separated by ':'.
+     */
+    private static String encodeClasspath(String[] classpathElements) {
+        if (classpathElements == null || classpathElements.length == 0) {
+            return "";
+        }
+        StringBuilder sb = new StringBuilder();
+        for (String element : classpathElements) {
+            if (sb.length() != 0) {
+                sb.append(":");
+            }
+            sb.append(element);
+        }
+        return sb.toString();
+    }
+
+    /**
+     * Adds an element to the encoding of an existing classpath.
+     * {@see PackageDexOptimizer.encodeClasspath(String[])}
+     */
+    private static String encodeClasspath(String classpath, String newElement) {
+        return classpath.isEmpty() ? newElement : (classpath + ":" + newElement);
+    }
+
+    /**
+     * Encodes a single class loader dependency starting from {@param path} and
+     * {@param classLoaderName}.
+     * NOTE: Keep this in sync with the dexopt expectations! Right now that is either "PCL[path]"
+     * for a PathClassLoader or "DLC[path]" for a DelegateLastClassLoader.
+     */
+    private static String encodeClassLoader(String classpath, String classLoaderName) {
+        String classLoaderDexoptEncoding = classLoaderName;
+        if ("dalvik.system.PathClassLoader".equals(classLoaderName)) {
+            classLoaderDexoptEncoding = "PCL";
+        } else {
+            Slog.wtf(TAG, "Unsupported classLoaderName: " + classLoaderName);
+        }
+        return classLoaderDexoptEncoding + "[" + classpath + "]";
+    }
+
+    /**
+     * Links to dependencies together in a format accepted by dexopt.
+     * NOTE: Keep this in sync with the dexopt expectations! Right now that is a list of split
+     * dependencies {@see encodeClassLoader} separated by ';'.
+     */
+    private static String encodeClassLoaderChain(String cl1, String cl2) {
+        if (cl1.isEmpty()) return cl2;
+        if (cl2.isEmpty()) return cl1;
+        return cl1 + ";" + cl2;
+    }
+
+    /**
+     * Compute the class loader context for the dex files present in the classpath of the first
+     * class loader from the given list (referred in the code as the {@code loadingClassLoader}).
+     * Each dex files gets its own class loader context in the returned array.
+     *
+     * Example:
+     *    If classLoadersNames = {"dalvik.system.DelegateLastClassLoader",
+     *    "dalvik.system.PathClassLoader"} and classPaths = {"foo.dex:bar.dex", "other.dex"}
+     *    The output will be
+     *    {"DLC[];PCL[other.dex]", "DLC[foo.dex];PCL[other.dex]"}
+     *    with "DLC[];PCL[other.dex]" being the context for "foo.dex"
+     *    and "DLC[foo.dex];PCL[other.dex]" the context for "bar.dex".
+     *
+     * If any of the class loaders names is unsupported the method will return null.
+     *
+     * The argument lists must be non empty and of the same size.
+     *
+     * @param classLoadersNames the names of the class loaders present in the loading chain. The
+     *    list encodes the class loader chain in the natural order. The first class loader has
+     *    the second one as its parent and so on.
+     * @param classPaths the class paths for the elements of {@param classLoadersNames}. The
+     *     the first element corresponds to the first class loader and so on. A classpath is
+     *     represented as a list of dex files separated by {@code File.pathSeparator}.
+     *     The return context will be for the dex files found in the first class path.
+     */
+    /*package*/ static String[] processContextForDexLoad(List<String> classLoadersNames,
+            List<String> classPaths) {
+        if (classLoadersNames.size() != classPaths.size()) {
+            throw new IllegalArgumentException(
+                    "The size of the class loader names and the dex paths do not match.");
+        }
+        if (classLoadersNames.isEmpty()) {
+            throw new IllegalArgumentException("Empty classLoadersNames");
+        }
+
+        // Compute the context for the parent class loaders.
+        String parentContext = "";
+        // We know that these lists are actually ArrayLists so getting the elements by index
+        // is fine (they come over binder). Even if something changes we expect the sizes to be
+        // very small and it shouldn't matter much.
+        for (int i = 1; i < classLoadersNames.size(); i++) {
+            if (!isValidClassLoaderName(classLoadersNames.get(i))) {
+                return null;
+            }
+            String classpath = encodeClasspath(classPaths.get(i).split(File.pathSeparator));
+            parentContext = encodeClassLoaderChain(parentContext,
+                    encodeClassLoader(classpath, classLoadersNames.get(i)));
+        }
+
+        // Now compute the class loader context for each dex file from the first classpath.
+        String loadingClassLoader = classLoadersNames.get(0);
+        if (!isValidClassLoaderName(loadingClassLoader)) {
+            return null;
+        }
+        String[] loadedDexPaths = classPaths.get(0).split(File.pathSeparator);
+        String[] loadedDexPathsContext = new String[loadedDexPaths.length];
+        String currentLoadedDexPathClasspath = "";
+        for (int i = 0; i < loadedDexPaths.length; i++) {
+            String dexPath = loadedDexPaths[i];
+            String currentContext = encodeClassLoader(
+                    currentLoadedDexPathClasspath, loadingClassLoader);
+            loadedDexPathsContext[i] = encodeClassLoaderChain(currentContext, parentContext);
+            currentLoadedDexPathClasspath = encodeClasspath(currentLoadedDexPathClasspath, dexPath);
+        }
+        return loadedDexPathsContext;
+    }
+
+    // AOSP-only hack.
+    private static boolean isValidClassLoaderName(String name) {
+        return "dalvik.system.PathClassLoader".equals(name) || "dalvik.system.DexClassLoader".equals(name);
+    }
+
+    /**
+     * Returns the relative paths of the splits declared by the application {@code info}.
+     * Assumes that the application declares a non-null array of splits.
+     */
+    private static String[] getSplitRelativeCodePaths(ApplicationInfo info) {
+        String baseCodePath = new File(info.getBaseCodePath()).getParent();
+        String[] splitCodePaths = info.getSplitCodePaths();
+        String[] splitRelativeCodePaths = new String[splitCodePaths.length];
+        for (int i = 0; i < splitCodePaths.length; i++) {
+            File pathFile = new File(splitCodePaths[i]);
+            splitRelativeCodePaths[i] = pathFile.getName();
+            // Sanity check that the base paths of the splits are all the same.
+            String basePath = pathFile.getParent();
+            if (!basePath.equals(baseCodePath)) {
+                Slog.wtf(TAG, "Split paths have different base paths: " + basePath + " and " +
+                        baseCodePath);
+            }
+        }
+        return splitRelativeCodePaths;
+    }
+}
diff --git a/services/core/java/com/android/server/pm/dex/PackageDexUsage.java b/services/core/java/com/android/server/pm/dex/PackageDexUsage.java
index 8a66f12..a4a0a54 100644
--- a/services/core/java/com/android/server/pm/dex/PackageDexUsage.java
+++ b/services/core/java/com/android/server/pm/dex/PackageDexUsage.java
@@ -26,7 +26,6 @@
 import com.android.server.pm.PackageManagerServiceUtils;
 
 import java.io.BufferedReader;
-import java.io.File;
 import java.io.FileNotFoundException;
 import java.io.FileOutputStream;
 import java.io.InputStreamReader;
@@ -35,14 +34,19 @@
 import java.io.Reader;
 import java.io.StringWriter;
 import java.io.Writer;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Collections;
 import java.util.Iterator;
 import java.util.HashMap;
 import java.util.HashSet;
+import java.util.List;
 import java.util.Map;
 import java.util.Set;
 
 import dalvik.system.VMRuntime;
 import libcore.io.IoUtils;
+import libcore.util.Objects;
 
 /**
  * Stat file which store usage information about dex files.
@@ -50,19 +54,44 @@
 public class PackageDexUsage extends AbstractStatsBase<Void> {
     private final static String TAG = "PackageDexUsage";
 
-    private final static int PACKAGE_DEX_USAGE_VERSION = 1;
+    // We support previous version to ensure that the usage list remains valid cross OTAs.
+    private final static int PACKAGE_DEX_USAGE_SUPPORTED_VERSION_1 = 1;
+    // Version 2 added:
+    //  - the list of packages that load the dex files
+    //  - class loader contexts for secondary dex files
+    //  - usage for all code paths (including splits)
+    private final static int PACKAGE_DEX_USAGE_SUPPORTED_VERSION_2 = 2;
+
+    private final static int PACKAGE_DEX_USAGE_VERSION = PACKAGE_DEX_USAGE_SUPPORTED_VERSION_2;
+
     private final static String PACKAGE_DEX_USAGE_VERSION_HEADER =
             "PACKAGE_MANAGER__PACKAGE_DEX_USAGE__";
 
     private final static String SPLIT_CHAR = ",";
+    private final static String CODE_PATH_LINE_CHAR = "+";
     private final static String DEX_LINE_CHAR = "#";
+    private final static String LOADING_PACKAGE_CHAR = "@";
+
+    // One of the things we record about dex files is the class loader context that was used to
+    // load them. That should be stable but if it changes we don't keep track of variable contexts.
+    // Instead we put a special marker in the dex usage file in order to recognize the case and
+    // skip optimizations on that dex files.
+    /*package*/ static final String VARIABLE_CLASS_LOADER_CONTEXT =
+            "=VariableClassLoaderContext=";
+    // The marker used for unsupported class loader contexts.
+    /*package*/ static final String UNSUPPORTED_CLASS_LOADER_CONTEXT =
+            "=UnsupportedClassLoaderContext=";
+    // The markers used for unknown class loader contexts. This can happen if the dex file was
+    // recorded in a previous version and we didn't have a chance to update its usage.
+    /*package*/ static final String UNKNOWN_CLASS_LOADER_CONTEXT =
+            "=UnknownClassLoaderContext=";
 
     // Map which structures the information we have on a package.
     // Maps package name to package data (which stores info about UsedByOtherApps and
     // secondary dex files.).
     // Access to this map needs synchronized.
     @GuardedBy("mPackageUseInfoMap")
-    private Map<String, PackageUseInfo> mPackageUseInfoMap;
+    private final Map<String, PackageUseInfo> mPackageUseInfoMap;
 
     public PackageDexUsage() {
         super("package-dex-usage.list", "PackageDexUsage_DiskWriter", /*lock*/ false);
@@ -75,21 +104,28 @@
      * Note this is called when apps load dex files and as such it should return
      * as fast as possible.
      *
-     * @param loadingPackage the package performing the load
+     * @param owningPackageName the package owning the dex path
      * @param dexPath the path of the dex files being loaded
      * @param ownerUserId the user id which runs the code loading the dex files
      * @param loaderIsa the ISA of the app loading the dex files
      * @param isUsedByOtherApps whether or not this dex file was not loaded by its owning package
      * @param primaryOrSplit whether or not the dex file is a primary/split dex. True indicates
      *        the file is either primary or a split. False indicates the file is secondary dex.
+     * @param loadingPackageName the package performing the load. Recorded only if it is different
+     *        than {@param owningPackageName}.
      * @return true if the dex load constitutes new information, or false if this information
      *         has been seen before.
      */
     public boolean record(String owningPackageName, String dexPath, int ownerUserId,
-            String loaderIsa, boolean isUsedByOtherApps, boolean primaryOrSplit) {
+            String loaderIsa, boolean isUsedByOtherApps, boolean primaryOrSplit,
+            String loadingPackageName, String classLoaderContext) {
         if (!PackageManagerServiceUtils.checkISA(loaderIsa)) {
             throw new IllegalArgumentException("loaderIsa " + loaderIsa + " is unsupported");
         }
+        if (classLoaderContext == null) {
+            throw new IllegalArgumentException("Null classLoaderContext");
+        }
+
         synchronized (mPackageUseInfoMap) {
             PackageUseInfo packageUseInfo = mPackageUseInfoMap.get(owningPackageName);
             if (packageUseInfo == null) {
@@ -99,12 +135,16 @@
                     // If we have a primary or a split apk, set isUsedByOtherApps.
                     // We do not need to record the loaderIsa or the owner because we compile
                     // primaries for all users and all ISAs.
-                    packageUseInfo.mIsUsedByOtherApps = isUsedByOtherApps;
+                    packageUseInfo.mergeCodePathUsedByOtherApps(dexPath, isUsedByOtherApps,
+                            owningPackageName, loadingPackageName);
                 } else {
                     // For secondary dex files record the loaderISA and the owner. We'll need
                     // to know under which user to compile and for what ISA.
-                    packageUseInfo.mDexUseInfoMap.put(
-                            dexPath, new DexUseInfo(isUsedByOtherApps, ownerUserId, loaderIsa));
+                    DexUseInfo newData = new DexUseInfo(isUsedByOtherApps, ownerUserId,
+                            classLoaderContext, loaderIsa);
+                    packageUseInfo.mDexUseInfoMap.put(dexPath, newData);
+                    maybeAddLoadingPackage(owningPackageName, loadingPackageName,
+                            newData.mLoadingPackages);
                 }
                 mPackageUseInfoMap.put(owningPackageName, packageUseInfo);
                 return true;
@@ -113,10 +153,14 @@
                 if (primaryOrSplit) {
                     // We have a possible update on the primary apk usage. Merge
                     // isUsedByOtherApps information and return if there was an update.
-                    return packageUseInfo.merge(isUsedByOtherApps);
+                    return packageUseInfo.mergeCodePathUsedByOtherApps(
+                            dexPath, isUsedByOtherApps, owningPackageName, loadingPackageName);
                 } else {
                     DexUseInfo newData = new DexUseInfo(
-                            isUsedByOtherApps, ownerUserId, loaderIsa);
+                            isUsedByOtherApps, ownerUserId, classLoaderContext, loaderIsa);
+                    boolean updateLoadingPackages = maybeAddLoadingPackage(owningPackageName,
+                            loadingPackageName, newData.mLoadingPackages);
+
                     DexUseInfo existingData = packageUseInfo.mDexUseInfoMap.get(dexPath);
                     if (existingData == null) {
                         // It's the first time we see this dex file.
@@ -138,7 +182,7 @@
                         }
                         // Merge the information into the existing data.
                         // Returns true if there was an update.
-                        return existingData.merge(newData);
+                        return existingData.merge(newData) || updateLoadingPackages;
                     }
                 }
             }
@@ -157,8 +201,12 @@
      * Convenience method for async writes which does not force the user to pass a useless
      * (Void) null.
      */
-    public void maybeWriteAsync() {
-      maybeWriteAsync((Void) null);
+    /*package*/ void maybeWriteAsync() {
+      maybeWriteAsync(null);
+    }
+
+    /*package*/ void writeNow() {
+        writeInternal(null);
     }
 
     @Override
@@ -185,16 +233,18 @@
      *
      * file_magic_version
      * package_name_1
+     * +code_path1
+     * @ loading_package_1_1, loading_package_1_2...
+     * +code_path2
+     * @ loading_package_2_1, loading_package_2_2...
      * #dex_file_path_1_1
      * user_1_1, used_by_other_app_1_1, user_isa_1_1_1, user_isa_1_1_2
+     * @ loading_package_1_1_1, loading_package_1_1_2...
+     * class_loader_context_1_1
      * #dex_file_path_1_2
      * user_1_2, used_by_other_app_1_2, user_isa_1_2_1, user_isa_1_2_2
-     * ...
-     * package_name_2
-     * #dex_file_path_2_1
-     * user_2_1, used_by_other_app_2_1, user_isa_2_1_1, user_isa_2_1_2
-     * #dex_file_path_2_2,
-     * user_2_2, used_by_other_app_2_2, user_isa_2_2_1, user_isa_2_2_2
+     * @ loading_package_1_2_1, loading_package_1_2_2...
+     * class_loader_context_1_2
      * ...
     */
     /* package */ void write(Writer out) {
@@ -211,9 +261,16 @@
             // Write the package line.
             String packageName = pEntry.getKey();
             PackageUseInfo packageUseInfo = pEntry.getValue();
+            fpw.println(packageName);
 
-            fpw.println(String.join(SPLIT_CHAR, packageName,
-                    writeBoolean(packageUseInfo.mIsUsedByOtherApps)));
+            // Write the code paths used by other apps.
+            for (Map.Entry<String, Set<String>> codeEntry :
+                    packageUseInfo.mCodePathsUsedByOtherApps.entrySet()) {
+                String codePath = codeEntry.getKey();
+                Set<String> loadingPackages = codeEntry.getValue();
+                fpw.println(CODE_PATH_LINE_CHAR + codePath);
+                fpw.println(LOADING_PACKAGE_CHAR + String.join(SPLIT_CHAR, loadingPackages));
+            }
 
             // Write dex file lines.
             for (Map.Entry<String, DexUseInfo> dEntry : packageUseInfo.mDexUseInfoMap.entrySet()) {
@@ -221,11 +278,14 @@
                 DexUseInfo dexUseInfo = dEntry.getValue();
                 fpw.println(DEX_LINE_CHAR + dexPath);
                 fpw.print(String.join(SPLIT_CHAR, Integer.toString(dexUseInfo.mOwnerUserId),
-                        writeBoolean(dexUseInfo.mIsUsedByOtherApps)));
+                    writeBoolean(dexUseInfo.mIsUsedByOtherApps)));
                 for (String isa : dexUseInfo.mLoaderIsas) {
                     fpw.print(SPLIT_CHAR + isa);
                 }
                 fpw.println();
+                fpw.println(LOADING_PACKAGE_CHAR
+                        + String.join(SPLIT_CHAR, dexUseInfo.mLoadingPackages));
+                fpw.println(dexUseInfo.getClassLoaderContext());
             }
         }
         fpw.flush();
@@ -252,6 +312,7 @@
         BufferedReader in = new BufferedReader(reader);
         // Read header, do version check.
         String versionLine = in.readLine();
+        int version;
         if (versionLine == null) {
             throw new IllegalStateException("No version line found.");
         } else {
@@ -259,48 +320,56 @@
                 // TODO(calin): the caller is responsible to clear the file.
                 throw new IllegalStateException("Invalid version line: " + versionLine);
             }
-            int version = Integer.parseInt(
+            version = Integer.parseInt(
                     versionLine.substring(PACKAGE_DEX_USAGE_VERSION_HEADER.length()));
-            if (version != PACKAGE_DEX_USAGE_VERSION) {
+            if (!isSupportedVersion(version)) {
                 throw new IllegalStateException("Unexpected version: " + version);
             }
         }
 
-        String s = null;
-        String currentPakage = null;
-        PackageUseInfo currentPakageData = null;
+        String line;
+        String currentPackage = null;
+        PackageUseInfo currentPackageData = null;
 
         Set<String> supportedIsas = new HashSet<>();
         for (String abi : Build.SUPPORTED_ABIS) {
             supportedIsas.add(VMRuntime.getInstructionSet(abi));
         }
-        while ((s = in.readLine()) != null) {
-            if (s.startsWith(DEX_LINE_CHAR)) {
+        while ((line = in.readLine()) != null) {
+            if (line.startsWith(DEX_LINE_CHAR)) {
                 // This is the start of the the dex lines.
-                // We expect two lines for each dex entry:
+                // We expect 4 lines for each dex entry:
                 // #dexPaths
+                // @loading_package_1,loading_package_2,...
+                // class_loader_context
                 // onwerUserId,isUsedByOtherApps,isa1,isa2
-                if (currentPakage == null) {
+                if (currentPackage == null) {
                     throw new IllegalStateException(
                         "Malformed PackageDexUsage file. Expected package line before dex line.");
                 }
 
-                // First line is the dex path.
-                String dexPath = s.substring(DEX_LINE_CHAR.length());
-                // Next line is the dex data.
-                s = in.readLine();
-                if (s == null) {
-                    throw new IllegalStateException("Could not fine dexUseInfo for line: " + s);
+                // Line 1 is the dex path.
+                String dexPath = line.substring(DEX_LINE_CHAR.length());
+
+                // Line 2 is the dex data: (userId, isUsedByOtherApps, isa).
+                line = in.readLine();
+                if (line == null) {
+                    throw new IllegalStateException("Could not find dexUseInfo line");
+                }
+                String[] elems = line.split(SPLIT_CHAR);
+                if (elems.length < 3) {
+                    throw new IllegalStateException("Invalid PackageDexUsage line: " + line);
                 }
 
-                // We expect at least 3 elements (isUsedByOtherApps, userId, isa).
-                String[] elems = s.split(SPLIT_CHAR);
-                if (elems.length < 3) {
-                    throw new IllegalStateException("Invalid PackageDexUsage line: " + s);
-                }
+                // In version 2 we added the loading packages and class loader context.
+                Set<String> loadingPackages = maybeReadLoadingPackages(in, version);
+                String classLoaderContext = maybeReadClassLoaderContext(in, version);
+
                 int ownerUserId = Integer.parseInt(elems[0]);
                 boolean isUsedByOtherApps = readBoolean(elems[1]);
-                DexUseInfo dexUseInfo = new DexUseInfo(isUsedByOtherApps, ownerUserId);
+                DexUseInfo dexUseInfo = new DexUseInfo(isUsedByOtherApps, ownerUserId,
+                        classLoaderContext, /*isa*/ null);
+                dexUseInfo.mLoadingPackages.addAll(loadingPackages);
                 for (int i = 2; i < elems.length; i++) {
                     String isa = elems[i];
                     if (supportedIsas.contains(isa)) {
@@ -317,18 +386,37 @@
                             "unsupported isas. dexPath=" + dexPath);
                     continue;
                 }
-                currentPakageData.mDexUseInfoMap.put(dexPath, dexUseInfo);
+                currentPackageData.mDexUseInfoMap.put(dexPath, dexUseInfo);
+            } else if (line.startsWith(CODE_PATH_LINE_CHAR)) {
+                // This is a code path used by other apps line.
+                if (version < PACKAGE_DEX_USAGE_SUPPORTED_VERSION_2) {
+                    throw new IllegalArgumentException("Unexpected code path line when parsing " +
+                            "PackageDexUseData: " + line);
+                }
+
+                // Expects 2 lines:
+                //    +code_paths
+                //    @loading_packages
+                String codePath = line.substring(CODE_PATH_LINE_CHAR.length());
+                Set<String> loadingPackages = maybeReadLoadingPackages(in, version);
+                currentPackageData.mCodePathsUsedByOtherApps.put(codePath, loadingPackages);
             } else {
                 // This is a package line.
-                // We expect it to be: `packageName,isUsedByOtherApps`.
-                String[] elems = s.split(SPLIT_CHAR);
-                if (elems.length != 2) {
-                    throw new IllegalStateException("Invalid PackageDexUsage line: " + s);
+                if (version >= PACKAGE_DEX_USAGE_SUPPORTED_VERSION_2) {
+                    currentPackage = line;
+                    currentPackageData = new PackageUseInfo();
+                } else {
+                    // Old version (<2)
+                    // We expect it to be: `packageName,isUsedByOtherApps`.
+                    String[] elems = line.split(SPLIT_CHAR);
+                    if (elems.length != 2) {
+                        throw new IllegalStateException("Invalid PackageDexUsage line: " + line);
+                    }
+                    currentPackage = elems[0];
+                    currentPackageData = new PackageUseInfo();
+                    currentPackageData.mUsedByOtherAppsBeforeUpgrade = readBoolean(elems[1]);
                 }
-                currentPakage = elems[0];
-                currentPakageData = new PackageUseInfo();
-                currentPakageData.mIsUsedByOtherApps = readBoolean(elems[1]);
-                data.put(currentPakage, currentPakageData);
+                data.put(currentPackage, currentPackageData);
             }
         }
 
@@ -339,9 +427,67 @@
     }
 
     /**
+     * Reads the class loader context encoding from the buffer {@code in} if
+     * {@code version} is at least {PACKAGE_DEX_USAGE_VERSION}.
+     */
+    private String maybeReadClassLoaderContext(BufferedReader in, int version) throws IOException {
+        String context = null;
+        if (version >= PACKAGE_DEX_USAGE_SUPPORTED_VERSION_2) {
+            context = in.readLine();
+            if (context == null) {
+                throw new IllegalStateException("Could not find the classLoaderContext line.");
+            }
+        }
+        // The context might be empty if we didn't have the chance to update it after a version
+        // upgrade. In this case return the special marker so that we recognize this is an unknown
+        // context.
+        return context == null ? UNKNOWN_CLASS_LOADER_CONTEXT : context;
+    }
+
+    /**
+     * Reads the list of loading packages from the buffer {@code in} if
+     * {@code version} is at least {PACKAGE_DEX_USAGE_SUPPORTED_VERSION_2}.
+     */
+    private Set<String> maybeReadLoadingPackages(BufferedReader in, int version)
+            throws IOException {
+        if (version >= PACKAGE_DEX_USAGE_SUPPORTED_VERSION_2) {
+            String line = in.readLine();
+            if (line == null) {
+                throw new IllegalStateException("Could not find the loadingPackages line.");
+            }
+            // We expect that most of the times the list of loading packages will be empty.
+            if (line.length() == LOADING_PACKAGE_CHAR.length()) {
+                return Collections.emptySet();
+            } else {
+                Set<String> result = new HashSet<>();
+                Collections.addAll(result,
+                        line.substring(LOADING_PACKAGE_CHAR.length()).split(SPLIT_CHAR));
+                return result;
+            }
+        } else {
+            return Collections.emptySet();
+        }
+    }
+
+    /**
+     * Utility method which adds {@param loadingPackage} to {@param loadingPackages} only if it's
+     * not equal to {@param owningPackage}
+     */
+    private boolean maybeAddLoadingPackage(String owningPackage, String loadingPackage,
+            Set<String> loadingPackages) {
+        return !owningPackage.equals(loadingPackage) && loadingPackages.add(loadingPackage);
+    }
+
+    private boolean isSupportedVersion(int version) {
+        return version == PACKAGE_DEX_USAGE_SUPPORTED_VERSION_1
+                || version == PACKAGE_DEX_USAGE_SUPPORTED_VERSION_2;
+    }
+
+    /**
      * Syncs the existing data with the set of available packages by removing obsolete entries.
      */
-    public void syncData(Map<String, Set<Integer>> packageToUsersMap) {
+    /*package*/ void syncData(Map<String, Set<Integer>> packageToUsersMap,
+            Map<String, Set<String>> packageToCodePaths) {
         synchronized (mPackageUseInfoMap) {
             Iterator<Map.Entry<String, PackageUseInfo>> pIt =
                     mPackageUseInfoMap.entrySet().iterator();
@@ -365,8 +511,26 @@
                             dIt.remove();
                         }
                     }
-                    if (!packageUseInfo.mIsUsedByOtherApps
-                            && packageUseInfo.mDexUseInfoMap.isEmpty()) {
+
+                    // Sync the code paths.
+                    Set<String> codePaths = packageToCodePaths.get(packageName);
+                    Iterator<Map.Entry<String, Set<String>>> codeIt =
+                        packageUseInfo.mCodePathsUsedByOtherApps.entrySet().iterator();
+                    while (codeIt.hasNext()) {
+                        if (!codePaths.contains(codeIt.next().getKey())) {
+                            codeIt.remove();
+                        }
+                    }
+
+                    // In case the package was marked as used by other apps in a previous version
+                    // propagate the flag to all the code paths.
+                    // See mUsedByOtherAppsBeforeUpgrade docs on why it is important to do it.
+                    if (packageUseInfo.mUsedByOtherAppsBeforeUpgrade) {
+                        for (String codePath : codePaths) {
+                            packageUseInfo.mergeCodePathUsedByOtherApps(codePath, true, null, null);
+                        }
+                    } else if (!packageUseInfo.isAnyCodePathUsedByOtherApps()
+                        && packageUseInfo.mDexUseInfoMap.isEmpty()) {
                         // The package is not used by other apps and we removed all its dex files
                         // records. Remove the entire package record as well.
                         pIt.remove();
@@ -380,14 +544,13 @@
      * Clears the {@code usesByOtherApps} marker for the package {@code packageName}.
      * @return true if the package usage info was updated.
      */
-    public boolean clearUsedByOtherApps(String packageName) {
+    /*package*/ boolean clearUsedByOtherApps(String packageName) {
         synchronized (mPackageUseInfoMap) {
             PackageUseInfo packageUseInfo = mPackageUseInfoMap.get(packageName);
-            if (packageUseInfo == null || !packageUseInfo.mIsUsedByOtherApps) {
+            if (packageUseInfo == null) {
                 return false;
             }
-            packageUseInfo.mIsUsedByOtherApps = false;
-            return true;
+            return packageUseInfo.clearCodePathUsedByOtherApps();
         }
     }
 
@@ -408,7 +571,7 @@
      * @return true if the record was found and actually deleted,
      *         false if the record doesn't exist
      */
-    public boolean removeUserPackage(String packageName, int userId) {
+    /*package*/ boolean removeUserPackage(String packageName, int userId) {
         synchronized (mPackageUseInfoMap) {
             PackageUseInfo packageUseInfo = mPackageUseInfoMap.get(packageName);
             if (packageUseInfo == null) {
@@ -426,7 +589,8 @@
             }
             // If no secondary dex info is left and the package is not used by other apps
             // remove the data since it is now useless.
-            if (packageUseInfo.mDexUseInfoMap.isEmpty() && !packageUseInfo.mIsUsedByOtherApps) {
+            if (packageUseInfo.mDexUseInfoMap.isEmpty()
+                    && !packageUseInfo.isAnyCodePathUsedByOtherApps()) {
                 mPackageUseInfoMap.remove(packageName);
                 updated = true;
             }
@@ -440,7 +604,7 @@
      * @return true if the record was found and actually deleted,
      *         false if the record doesn't exist
      */
-    public boolean removeDexFile(String packageName, String dexFile, int userId) {
+    /*package*/ boolean removeDexFile(String packageName, String dexFile, int userId) {
         synchronized (mPackageUseInfoMap) {
             PackageUseInfo packageUseInfo = mPackageUseInfoMap.get(packageName);
             if (packageUseInfo == null) {
@@ -462,7 +626,7 @@
         return false;
     }
 
-    public PackageUseInfo getPackageUseInfo(String packageName) {
+    /*package*/ PackageUseInfo getPackageUseInfo(String packageName) {
         synchronized (mPackageUseInfoMap) {
             PackageUseInfo useInfo = mPackageUseInfoMap.get(packageName);
             // The useInfo contains a map for secondary dex files which could be modified
@@ -477,7 +641,7 @@
     /**
      * Return all packages that contain records of secondary dex files.
      */
-    public Set<String> getAllPackagesWithSecondaryDexFiles() {
+    /*package*/ Set<String> getAllPackagesWithSecondaryDexFiles() {
         Set<String> packages = new HashSet<>();
         synchronized (mPackageUseInfoMap) {
             for (Map.Entry<String, PackageUseInfo> entry : mPackageUseInfoMap.entrySet()) {
@@ -515,15 +679,6 @@
         throw new IllegalArgumentException("Unknown bool encoding: " + bool);
     }
 
-    private boolean contains(int[] array, int elem) {
-        for (int i = 0; i < array.length; i++) {
-            if (elem == array[i]) {
-                return true;
-            }
-        }
-        return false;
-    }
-
     public String dump() {
         StringWriter sw = new StringWriter();
         write(sw);
@@ -534,39 +689,95 @@
      * Stores data on how a package and its dex files are used.
      */
     public static class PackageUseInfo {
-        // This flag is for the primary and split apks. It is set to true whenever one of them
-        // is loaded by another app.
-        private boolean mIsUsedByOtherApps;
+        // The app's code paths that are used by other apps.
+        // The key is the code path and the value is the set of loading packages.
+        private final Map<String, Set<String>> mCodePathsUsedByOtherApps;
         // Map dex paths to their data (isUsedByOtherApps, owner id, loader isa).
         private final Map<String, DexUseInfo> mDexUseInfoMap;
 
+        // Keeps track of whether or not this package was used by other apps before
+        // we upgraded to VERSION 4 which records the info for each code path separately.
+        // This is unwanted complexity but without it we risk to profile guide compile
+        // something that supposed to be shared. For example:
+        //   1) we determine that chrome is used by another app
+        //   2) we take an OTA which upgrades the way we keep track of usage data
+        //   3) chrome doesn't get used until the background job executes
+        //   4) as part of the backgound job we now think that chrome is not used by others
+        //      and we speed-profile.
+        //   5) as a result the next time someone uses chrome it will extract from apk since
+        //      the compiled code will be private.
+        private boolean mUsedByOtherAppsBeforeUpgrade;
+
         public PackageUseInfo() {
-            mIsUsedByOtherApps = false;
+            mCodePathsUsedByOtherApps = new HashMap<>();
             mDexUseInfoMap = new HashMap<>();
         }
 
         // Creates a deep copy of the `other`.
         public PackageUseInfo(PackageUseInfo other) {
-            mIsUsedByOtherApps = other.mIsUsedByOtherApps;
+            mCodePathsUsedByOtherApps = new HashMap<>();
+            for (Map.Entry<String, Set<String>> e : other.mCodePathsUsedByOtherApps.entrySet()) {
+                mCodePathsUsedByOtherApps.put(e.getKey(), new HashSet<>(e.getValue()));
+            }
+
             mDexUseInfoMap = new HashMap<>();
             for (Map.Entry<String, DexUseInfo> e : other.mDexUseInfoMap.entrySet()) {
                 mDexUseInfoMap.put(e.getKey(), new DexUseInfo(e.getValue()));
             }
         }
 
-        private boolean merge(boolean isUsedByOtherApps) {
-            boolean oldIsUsedByOtherApps = mIsUsedByOtherApps;
-            mIsUsedByOtherApps = mIsUsedByOtherApps || isUsedByOtherApps;
-            return oldIsUsedByOtherApps != this.mIsUsedByOtherApps;
+        private boolean mergeCodePathUsedByOtherApps(String codePath, boolean isUsedByOtherApps,
+                String owningPackageName, String loadingPackage) {
+            if (!isUsedByOtherApps) {
+                // Nothing to update if the the code path is not used by other apps.
+                return false;
+            }
+
+            boolean newCodePath = false;
+            Set<String> loadingPackages = mCodePathsUsedByOtherApps.get(codePath);
+            if (loadingPackages == null) {
+                loadingPackages = new HashSet<>();
+                mCodePathsUsedByOtherApps.put(codePath, loadingPackages);
+                newCodePath = true;
+            }
+            boolean newLoadingPackage = loadingPackage != null
+                    && !loadingPackage.equals(owningPackageName)
+                    && loadingPackages.add(loadingPackage);
+            return newCodePath || newLoadingPackage;
         }
 
-        public boolean isUsedByOtherApps() {
-            return mIsUsedByOtherApps;
+        public boolean isUsedByOtherApps(String codePath) {
+            return mCodePathsUsedByOtherApps.containsKey(codePath);
         }
 
         public Map<String, DexUseInfo> getDexUseInfoMap() {
             return mDexUseInfoMap;
         }
+
+        public Set<String> getLoadingPackages(String codePath) {
+            return mCodePathsUsedByOtherApps.getOrDefault(codePath, null);
+        }
+
+        public boolean isAnyCodePathUsedByOtherApps() {
+            return !mCodePathsUsedByOtherApps.isEmpty();
+        }
+
+        /**
+         * Clears the usedByOtherApps markers from all code paths.
+         * Returns whether or not there was an update.
+         */
+        /*package*/ boolean clearCodePathUsedByOtherApps() {
+            // Update mUsedByOtherAppsBeforeUpgrade as well to be consistent with
+            // the new data. This is not saved to disk so we don't need to return it.
+            mUsedByOtherAppsBeforeUpgrade = true;
+
+            if (mCodePathsUsedByOtherApps.isEmpty()) {
+                return false;
+            } else {
+                mCodePathsUsedByOtherApps.clear();
+                return true;
+            }
+        }
     }
 
     /**
@@ -575,33 +786,59 @@
     public static class DexUseInfo {
         private boolean mIsUsedByOtherApps;
         private final int mOwnerUserId;
+        // The class loader context for the dex file. This encodes the class loader chain
+        // (class loader type + class path) in a format compatible to dex2oat.
+        // See {@code DexoptUtils.processContextForDexLoad}.
+        private String mClassLoaderContext;
+        // The instructions sets of the applications loading the dex file.
         private final Set<String> mLoaderIsas;
+        // Packages who load this dex file.
+        private final Set<String> mLoadingPackages;
 
-        public DexUseInfo(boolean isUsedByOtherApps, int ownerUserId) {
-            this(isUsedByOtherApps, ownerUserId, null);
-        }
-
-        public DexUseInfo(boolean isUsedByOtherApps, int ownerUserId, String loaderIsa) {
+        public DexUseInfo(boolean isUsedByOtherApps, int ownerUserId, String classLoaderContext,
+                String loaderIsa) {
             mIsUsedByOtherApps = isUsedByOtherApps;
             mOwnerUserId = ownerUserId;
+            mClassLoaderContext = classLoaderContext;
             mLoaderIsas = new HashSet<>();
             if (loaderIsa != null) {
                 mLoaderIsas.add(loaderIsa);
             }
+            mLoadingPackages = new HashSet<>();
         }
 
         // Creates a deep copy of the `other`.
         public DexUseInfo(DexUseInfo other) {
             mIsUsedByOtherApps = other.mIsUsedByOtherApps;
             mOwnerUserId = other.mOwnerUserId;
+            mClassLoaderContext = other.mClassLoaderContext;
             mLoaderIsas = new HashSet<>(other.mLoaderIsas);
+            mLoadingPackages = new HashSet<>(other.mLoadingPackages);
         }
 
         private boolean merge(DexUseInfo dexUseInfo) {
             boolean oldIsUsedByOtherApps = mIsUsedByOtherApps;
             mIsUsedByOtherApps = mIsUsedByOtherApps || dexUseInfo.mIsUsedByOtherApps;
             boolean updateIsas = mLoaderIsas.addAll(dexUseInfo.mLoaderIsas);
-            return updateIsas || (oldIsUsedByOtherApps != mIsUsedByOtherApps);
+            boolean updateLoadingPackages = mLoadingPackages.addAll(dexUseInfo.mLoadingPackages);
+
+            String oldClassLoaderContext = mClassLoaderContext;
+            if (UNKNOWN_CLASS_LOADER_CONTEXT.equals(mClassLoaderContext)) {
+                // Can happen if we read a previous version.
+                mClassLoaderContext = dexUseInfo.mClassLoaderContext;
+            } else if (UNSUPPORTED_CLASS_LOADER_CONTEXT.equals(dexUseInfo.mClassLoaderContext)) {
+                // We detected an unsupported context.
+                mClassLoaderContext = UNSUPPORTED_CLASS_LOADER_CONTEXT;
+            } else if (!UNSUPPORTED_CLASS_LOADER_CONTEXT.equals(mClassLoaderContext) &&
+                    !Objects.equal(mClassLoaderContext, dexUseInfo.mClassLoaderContext)) {
+                // We detected a context change.
+                mClassLoaderContext = VARIABLE_CLASS_LOADER_CONTEXT;
+            }
+
+            return updateIsas ||
+                    (oldIsUsedByOtherApps != mIsUsedByOtherApps) ||
+                    updateLoadingPackages
+                    || !Objects.equal(oldClassLoaderContext, mClassLoaderContext);
         }
 
         public boolean isUsedByOtherApps() {
@@ -615,5 +852,25 @@
         public Set<String> getLoaderIsas() {
             return mLoaderIsas;
         }
+
+        public Set<String> getLoadingPackages() {
+            return mLoadingPackages;
+        }
+
+        public String getClassLoaderContext() { return mClassLoaderContext; }
+
+        public boolean isUnsupportedClassLoaderContext() {
+            return UNSUPPORTED_CLASS_LOADER_CONTEXT.equals(mClassLoaderContext);
+        }
+
+        public boolean isUnknownClassLoaderContext() {
+            // The class loader context may be unknown if we loaded the data from a previous version
+            // which didn't save the context.
+            return UNKNOWN_CLASS_LOADER_CONTEXT.equals(mClassLoaderContext);
+        }
+
+        public boolean isVariableClassLoaderContext() {
+            return VARIABLE_CLASS_LOADER_CONTEXT.equals(mClassLoaderContext);
+        }
     }
 }
diff --git a/services/core/java/com/android/server/pm/permission/OWNERS b/services/core/java/com/android/server/pm/permission/OWNERS
new file mode 100644
index 0000000..6c8c9b2
--- /dev/null
+++ b/services/core/java/com/android/server/pm/permission/OWNERS
@@ -0,0 +1,7 @@
+per-file DefaultPermissionGrantPolicy.java = bpoiesz@google.com
+per-file DefaultPermissionGrantPolicy.java = fkupolov@google.com
+per-file DefaultPermissionGrantPolicy.java = hackbod@android.com
+per-file DefaultPermissionGrantPolicy.java = jsharkey@android.com
+per-file DefaultPermissionGrantPolicy.java = svetoslavganov@google.com
+per-file DefaultPermissionGrantPolicy.java = toddke@google.com
+per-file DefaultPermissionGrantPolicy.java = yamasani@google.com
diff --git a/services/core/java/com/android/server/timezone/IntentHelperImpl.java b/services/core/java/com/android/server/timezone/IntentHelperImpl.java
index bc0f6e4..6e6259d 100644
--- a/services/core/java/com/android/server/timezone/IntentHelperImpl.java
+++ b/services/core/java/com/android/server/timezone/IntentHelperImpl.java
@@ -24,6 +24,7 @@
 import android.content.Intent;
 import android.content.IntentFilter;
 import android.os.PatternMatcher;
+import android.os.UserHandle;
 import android.util.Slog;
 
 /**
@@ -76,7 +77,9 @@
         // not expected to need local data.
 
         Receiver packageUpdateReceiver = new Receiver(packageTracker);
-        mContext.registerReceiver(packageUpdateReceiver, packageIntentFilter);
+        mContext.registerReceiverAsUser(
+                packageUpdateReceiver, UserHandle.SYSTEM, packageIntentFilter,
+                null /* broadcastPermission */, null /* default handler */);
     }
 
     /** Sends an intent to trigger an update check. */
diff --git a/services/core/java/com/android/server/timezone/PackageTrackerHelperImpl.java b/services/core/java/com/android/server/timezone/PackageTrackerHelperImpl.java
index 2e0c21b..b89dd38 100644
--- a/services/core/java/com/android/server/timezone/PackageTrackerHelperImpl.java
+++ b/services/core/java/com/android/server/timezone/PackageTrackerHelperImpl.java
@@ -26,6 +26,7 @@
 import android.content.pm.ResolveInfo;
 import android.content.res.Resources;
 import android.os.SystemClock;
+import android.os.UserHandle;
 import android.util.Slog;
 
 import java.util.List;
@@ -114,8 +115,8 @@
     @Override
     public boolean contentProviderRegistered(String authority, String requiredPackageName) {
         int flags = PackageManager.MATCH_DISABLED_UNTIL_USED_COMPONENTS;
-        ProviderInfo providerInfo =
-                mPackageManager.resolveContentProvider(authority, flags);
+        ProviderInfo providerInfo = mPackageManager.resolveContentProviderAsUser(
+                authority, flags, UserHandle.SYSTEM.getIdentifier());
         if (providerInfo == null) {
             Slog.i(TAG, "contentProviderRegistered: No content provider registered with authority="
                     + authority);
@@ -136,7 +137,8 @@
             throws PackageManager.NameNotFoundException {
 
         int flags = PackageManager.MATCH_DISABLED_UNTIL_USED_COMPONENTS;
-        List<ResolveInfo> resolveInfo = mPackageManager.queryBroadcastReceivers(intent, flags);
+        List<ResolveInfo> resolveInfo = mPackageManager.queryBroadcastReceiversAsUser(
+                intent, flags, UserHandle.SYSTEM);
         if (resolveInfo.size() != 1) {
             Slog.i(TAG, "receiverRegistered: Zero or multiple broadcast receiver registered for"
                     + " intent=" + intent + ", found=" + resolveInfo);
diff --git a/services/core/java/com/android/server/timezone/RulesManagerService.java b/services/core/java/com/android/server/timezone/RulesManagerService.java
index 6824a59..52b49ba 100644
--- a/services/core/java/com/android/server/timezone/RulesManagerService.java
+++ b/services/core/java/com/android/server/timezone/RulesManagerService.java
@@ -47,6 +47,7 @@
 import java.util.concurrent.Executor;
 import java.util.concurrent.atomic.AtomicBoolean;
 import libcore.icu.ICU;
+import libcore.util.TimeZoneFinder;
 import libcore.util.ZoneInfoDB;
 
 import static android.app.timezone.RulesState.DISTRO_STATUS_INSTALLED;
@@ -479,9 +480,10 @@
                         case 'a': {
                             // Report the active rules version (i.e. the rules in use by the current
                             // process).
-                            pw.println("Active rules version (ICU, libcore): "
+                            pw.println("Active rules version (ICU, ZoneInfoDB, TimeZoneFinder): "
                                     + ICU.getTZDataVersion() + ","
-                                    + ZoneInfoDB.getInstance().getVersion());
+                                    + ZoneInfoDB.getInstance().getVersion() + ","
+                                    + TimeZoneFinder.getInstance().getIanaVersion());
                             break;
                         }
                         default: {
@@ -494,8 +496,10 @@
         }
 
         pw.println("RulesManagerService state: " + toString());
-        pw.println("Active rules version (ICU, libcore): " + ICU.getTZDataVersion() + ","
-                + ZoneInfoDB.getInstance().getVersion());
+        pw.println("Active rules version (ICU, ZoneInfoDB, TimeZoneFinder): "
+                + ICU.getTZDataVersion() + ","
+                + ZoneInfoDB.getInstance().getVersion() + ","
+                + TimeZoneFinder.getInstance().getIanaVersion());
         pw.println("Distro state: " + rulesState.toString());
         mPackageTracker.dump(pw);
     }
diff --git a/services/net/java/android/net/util/VersionedBroadcastListener.java b/services/net/java/android/net/util/VersionedBroadcastListener.java
new file mode 100644
index 0000000..107c404
--- /dev/null
+++ b/services/net/java/android/net/util/VersionedBroadcastListener.java
@@ -0,0 +1,109 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net.util;
+
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.os.Handler;
+import android.util.Log;
+
+import java.util.concurrent.atomic.AtomicInteger;
+import java.util.function.Consumer;
+
+
+/**
+ * A utility class that runs the provided callback on the provided handler when
+ * intents matching the provided filter arrive. Intents received by a stale
+ * receiver are safely ignored.
+ *
+ * Calls to startListening() and stopListening() must happen on the same thread.
+ *
+ * @hide
+ */
+public class VersionedBroadcastListener {
+    private static final boolean DBG = false;
+
+    public interface IntentCallback {
+        public void run(Intent intent);
+    }
+
+    private final String mTag;
+    private final Context mContext;
+    private final Handler mHandler;
+    private final IntentFilter mFilter;
+    private final Consumer<Intent> mCallback;
+    private final AtomicInteger mGenerationNumber;
+    private BroadcastReceiver mReceiver;
+
+    public VersionedBroadcastListener(String tag, Context ctx, Handler handler,
+            IntentFilter filter, Consumer<Intent> callback) {
+        mTag = tag;
+        mContext = ctx;
+        mHandler = handler;
+        mFilter = filter;
+        mCallback = callback;
+        mGenerationNumber = new AtomicInteger(0);
+    }
+
+    public void startListening() {
+        if (DBG) Log.d(mTag, "startListening");
+        if (mReceiver != null) return;
+
+        mReceiver = new Receiver(mTag, mGenerationNumber, mCallback);
+        mContext.registerReceiver(mReceiver, mFilter, null, mHandler);
+    }
+
+    public void stopListening() {
+        if (DBG) Log.d(mTag, "stopListening");
+        if (mReceiver == null) return;
+
+        mGenerationNumber.incrementAndGet();
+        mContext.unregisterReceiver(mReceiver);
+        mReceiver = null;
+    }
+
+    private static class Receiver extends BroadcastReceiver {
+        public final String tag;
+        public final AtomicInteger atomicGenerationNumber;
+        public final Consumer<Intent> callback;
+        // Used to verify this receiver is still current.
+        public final int generationNumber;
+
+        public Receiver(
+                String tag, AtomicInteger atomicGenerationNumber, Consumer<Intent> callback) {
+            this.tag = tag;
+            this.atomicGenerationNumber = atomicGenerationNumber;
+            this.callback = callback;
+            generationNumber = atomicGenerationNumber.incrementAndGet();
+        }
+
+        @Override
+        public void onReceive(Context context, Intent intent) {
+            final int currentGenerationNumber = atomicGenerationNumber.get();
+
+            if (DBG) {
+                Log.d(tag, "receiver generationNumber=" + generationNumber +
+                        ", current generationNumber=" + currentGenerationNumber);
+            }
+            if (generationNumber != currentGenerationNumber) return;
+
+            callback.accept(intent);
+        }
+    }
+}
diff --git a/services/tests/servicestests/src/com/android/server/pm/dex/DexManagerTests.java b/services/tests/servicestests/src/com/android/server/pm/dex/DexManagerTests.java
index afc0f67..4db9a30 100644
--- a/services/tests/servicestests/src/com/android/server/pm/dex/DexManagerTests.java
+++ b/services/tests/servicestests/src/com/android/server/pm/dex/DexManagerTests.java
@@ -23,10 +23,14 @@
 import android.support.test.filters.SmallTest;
 import android.support.test.runner.AndroidJUnit4;
 
+import dalvik.system.DelegateLastClassLoader;
+import dalvik.system.PathClassLoader;
 import dalvik.system.VMRuntime;
 
+import java.io.File;
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.Collections;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
@@ -48,6 +52,10 @@
 @RunWith(AndroidJUnit4.class)
 @SmallTest
 public class DexManagerTests {
+    private static final String PATH_CLASS_LOADER_NAME = PathClassLoader.class.getName();
+    private static final String DELEGATE_LAST_CLASS_LOADER_NAME =
+            DelegateLastClassLoader.class.getName();
+
     private DexManager mDexManager;
 
     private TestData mFooUser0;
@@ -56,6 +64,9 @@
     private TestData mInvalidIsa;
     private TestData mDoesNotExist;
 
+    private TestData mBarUser0UnsupportedClassLoader;
+    private TestData mBarUser0DelegateLastClassLoader;
+
     private int mUser0;
     private int mUser1;
 
@@ -68,12 +79,17 @@
         String foo = "foo";
         String bar = "bar";
 
-        mFooUser0 = new TestData(foo, isa, mUser0);
-        mBarUser0 = new TestData(bar, isa, mUser0);
-        mBarUser1 = new TestData(bar, isa, mUser1);
+        mFooUser0 = new TestData(foo, isa, mUser0, PATH_CLASS_LOADER_NAME);
+        mBarUser0 = new TestData(bar, isa, mUser0, PATH_CLASS_LOADER_NAME);
+        mBarUser1 = new TestData(bar, isa, mUser1, PATH_CLASS_LOADER_NAME);
         mInvalidIsa = new TestData("INVALID", "INVALID_ISA", mUser0);
         mDoesNotExist = new TestData("DOES.NOT.EXIST", isa, mUser1);
 
+        mBarUser0UnsupportedClassLoader = new TestData(bar, isa, mUser0,
+                "unsupported.class_loader");
+        mBarUser0DelegateLastClassLoader = new TestData(bar, isa, mUser0,
+                DELEGATE_LAST_CLASS_LOADER_NAME);
+
         mDexManager = new DexManager(null, null, null, null);
 
         // Foo and Bar are available to user0.
@@ -90,7 +106,7 @@
         notifyDexLoad(mFooUser0, mFooUser0.getBaseAndSplitDexPaths(), mUser0);
 
         // Package is not used by others, so we should get nothing back.
-        assertNull(getPackageUseInfo(mFooUser0));
+        assertNoUseInfo(mFooUser0);
     }
 
     @Test
@@ -100,8 +116,7 @@
 
         // Bar is used by others now and should be in our records
         PackageUseInfo pui = getPackageUseInfo(mBarUser0);
-        assertNotNull(pui);
-        assertTrue(pui.isUsedByOtherApps());
+        assertIsUsedByOtherApps(mBarUser0, pui, true);
         assertTrue(pui.getDexUseInfoMap().isEmpty());
     }
 
@@ -112,8 +127,7 @@
         notifyDexLoad(mFooUser0, fooSecondaries, mUser0);
 
         PackageUseInfo pui = getPackageUseInfo(mFooUser0);
-        assertNotNull(pui);
-        assertFalse(pui.isUsedByOtherApps());
+        assertIsUsedByOtherApps(mFooUser0, pui, false);
         assertEquals(fooSecondaries.size(), pui.getDexUseInfoMap().size());
         assertSecondaryUse(mFooUser0, pui, fooSecondaries, /*isUsedByOtherApps*/false, mUser0);
     }
@@ -125,8 +139,7 @@
         notifyDexLoad(mFooUser0, barSecondaries, mUser0);
 
         PackageUseInfo pui = getPackageUseInfo(mBarUser0);
-        assertNotNull(pui);
-        assertFalse(pui.isUsedByOtherApps());
+        assertIsUsedByOtherApps(mBarUser0, pui, false);
         assertEquals(barSecondaries.size(), pui.getDexUseInfoMap().size());
         assertSecondaryUse(mFooUser0, pui, barSecondaries, /*isUsedByOtherApps*/true, mUser0);
     }
@@ -149,8 +162,7 @@
 
         // Check bar usage. Should be used by other app (for primary and barSecondaries).
         PackageUseInfo pui = getPackageUseInfo(mBarUser0);
-        assertNotNull(pui);
-        assertTrue(pui.isUsedByOtherApps());
+        assertIsUsedByOtherApps(mBarUser0, pui, true);
         assertEquals(barSecondaries.size() + barSecondariesForOwnUse.size(),
                 pui.getDexUseInfoMap().size());
 
@@ -160,8 +172,7 @@
 
         // Check foo usage. Should not be used by other app.
         pui = getPackageUseInfo(mFooUser0);
-        assertNotNull(pui);
-        assertFalse(pui.isUsedByOtherApps());
+        assertIsUsedByOtherApps(mFooUser0, pui, false);
         assertEquals(fooSecondaries.size(), pui.getDexUseInfoMap().size());
         assertSecondaryUse(mFooUser0, pui, fooSecondaries, /*isUsedByOtherApps*/false, mUser0);
     }
@@ -169,22 +180,22 @@
     @Test
     public void testPackageUseInfoNotFound() {
         // Assert we don't get back data we did not previously record.
-        assertNull(getPackageUseInfo(mFooUser0));
+        assertNoUseInfo(mFooUser0);
     }
 
     @Test
     public void testInvalidIsa() {
         // Notifying with an invalid ISA should be ignored.
         notifyDexLoad(mInvalidIsa, mInvalidIsa.getSecondaryDexPaths(), mUser0);
-        assertNull(getPackageUseInfo(mInvalidIsa));
+        assertNoUseInfo(mInvalidIsa);
     }
 
     @Test
-    public void testNotExistingPackate() {
+    public void testNotExistingPackage() {
         // Notifying about the load of a package which was previously not
         // register in DexManager#load should be ignored.
         notifyDexLoad(mDoesNotExist, mDoesNotExist.getBaseAndSplitDexPaths(), mUser0);
-        assertNull(getPackageUseInfo(mDoesNotExist));
+        assertNoUseInfo(mDoesNotExist);
     }
 
     @Test
@@ -192,7 +203,7 @@
         // Bar from User1 tries to load secondary dex files from User0 Bar.
         // Request should be ignored.
         notifyDexLoad(mBarUser1, mBarUser0.getSecondaryDexPaths(), mUser1);
-        assertNull(getPackageUseInfo(mBarUser1));
+        assertNoUseInfo(mBarUser1);
     }
 
     @Test
@@ -201,7 +212,7 @@
         // Note that the PackageManagerService already filters this out but we
         // still check that nothing goes unexpected in DexManager.
         notifyDexLoad(mBarUser0, mFooUser0.getBaseAndSplitDexPaths(), mUser1);
-        assertNull(getPackageUseInfo(mBarUser1));
+        assertNoUseInfo(mBarUser1);
     }
 
     @Test
@@ -213,7 +224,7 @@
         // Before we notify about the installation of the newPackage if mFoo
         // is trying to load something from it we should not find it.
         notifyDexLoad(mFooUser0, newSecondaries, mUser0);
-        assertNull(getPackageUseInfo(newPackage));
+        assertNoUseInfo(newPackage);
 
         // Notify about newPackage install and let mFoo load its dexes.
         mDexManager.notifyPackageInstalled(newPackage.mPackageInfo, mUser0);
@@ -221,8 +232,7 @@
 
         // We should get back the right info.
         PackageUseInfo pui = getPackageUseInfo(newPackage);
-        assertNotNull(pui);
-        assertFalse(pui.isUsedByOtherApps());
+        assertIsUsedByOtherApps(newPackage, pui, false);
         assertEquals(newSecondaries.size(), pui.getDexUseInfoMap().size());
         assertSecondaryUse(newPackage, pui, newSecondaries, /*isUsedByOtherApps*/true, mUser0);
     }
@@ -238,8 +248,7 @@
         notifyDexLoad(newPackage, newSecondaries, mUser0);
 
         PackageUseInfo pui = getPackageUseInfo(newPackage);
-        assertNotNull(pui);
-        assertFalse(pui.isUsedByOtherApps());
+        assertIsUsedByOtherApps(newPackage, pui, false);
         assertEquals(newSecondaries.size(), pui.getDexUseInfoMap().size());
         assertSecondaryUse(newPackage, pui, newSecondaries, /*isUsedByOtherApps*/false, mUser0);
     }
@@ -251,8 +260,7 @@
 
         // Bar is used by others now and should be in our records.
         PackageUseInfo pui = getPackageUseInfo(mBarUser0);
-        assertNotNull(pui);
-        assertTrue(pui.isUsedByOtherApps());
+        assertIsUsedByOtherApps(mBarUser0, pui, true);
         assertTrue(pui.getDexUseInfoMap().isEmpty());
 
         // Notify that bar is updated.
@@ -262,8 +270,7 @@
 
         // The usedByOtherApps flag should be clear now.
         pui = getPackageUseInfo(mBarUser0);
-        assertNotNull(pui);
-        assertFalse(pui.isUsedByOtherApps());
+        assertIsUsedByOtherApps(mBarUser0, pui, false);
     }
 
     @Test
@@ -275,8 +282,7 @@
 
         // We shouldn't find yet the new split as we didn't notify the package update.
         notifyDexLoad(mFooUser0, newSplits, mUser0);
-        PackageUseInfo pui = getPackageUseInfo(mBarUser0);
-        assertNull(pui);
+        assertNoUseInfo(mBarUser0);
 
         // Notify that bar is updated. splitSourceDirs will contain the updated path.
         mDexManager.notifyPackageUpdated(mBarUser0.getPackageName(),
@@ -285,9 +291,9 @@
 
         // Now, when the split is loaded we will find it and we should mark Bar as usedByOthers.
         notifyDexLoad(mFooUser0, newSplits, mUser0);
-        pui = getPackageUseInfo(mBarUser0);
+        PackageUseInfo pui = getPackageUseInfo(mBarUser0);
         assertNotNull(pui);
-        assertTrue(pui.isUsedByOtherApps());
+        assertIsUsedByOtherApps(newSplits, pui, true);
     }
 
     @Test
@@ -319,8 +325,7 @@
         // Foo should still be around since it's used by other apps but with no
         // secondary dex info.
         PackageUseInfo pui = getPackageUseInfo(mFooUser0);
-        assertNotNull(pui);
-        assertTrue(pui.isUsedByOtherApps());
+        assertIsUsedByOtherApps(mFooUser0, pui, true);
         assertTrue(pui.getDexUseInfoMap().isEmpty());
     }
 
@@ -334,8 +339,7 @@
 
         // Foo should not be around since all its secondary dex info were deleted
         // and it is not used by other apps.
-        PackageUseInfo pui = getPackageUseInfo(mFooUser0);
-        assertNull(pui);
+        assertNoUseInfo(mFooUser0);
     }
 
     @Test
@@ -347,8 +351,7 @@
         mDexManager.notifyPackageDataDestroyed(mBarUser0.getPackageName(), UserHandle.USER_ALL);
 
         // Bar should not be around since it was removed for all users.
-        PackageUseInfo pui = getPackageUseInfo(mBarUser0);
-        assertNull(pui);
+        assertNoUseInfo(mBarUser0);
     }
 
     @Test
@@ -357,7 +360,7 @@
         // Load a dex file from framework.
         notifyDexLoad(mFooUser0, Arrays.asList(frameworkDex), mUser0);
         // The dex file should not be recognized as a package.
-        assertNull(mDexManager.getPackageUseInfo(frameworkDex));
+        assertFalse(mDexManager.hasInfoOnPackage(frameworkDex));
     }
 
     @Test
@@ -367,14 +370,83 @@
         notifyDexLoad(mFooUser0, fooSecondaries, mUser0);
 
         PackageUseInfo pui = getPackageUseInfo(mFooUser0);
-        assertNotNull(pui);
-        assertFalse(pui.isUsedByOtherApps());
+        assertIsUsedByOtherApps(mFooUser0, pui, false);
         assertEquals(fooSecondaries.size(), pui.getDexUseInfoMap().size());
         assertSecondaryUse(mFooUser0, pui, fooSecondaries, /*isUsedByOtherApps*/false, mUser0);
     }
 
+    @Test
+    public void testNotifyUnsupportedClassLoader() {
+        List<String> secondaries = mBarUser0UnsupportedClassLoader.getSecondaryDexPaths();
+        notifyDexLoad(mBarUser0UnsupportedClassLoader, secondaries, mUser0);
+
+        PackageUseInfo pui = getPackageUseInfo(mBarUser0UnsupportedClassLoader);
+        assertIsUsedByOtherApps(mBarUser0UnsupportedClassLoader, pui, false);
+        assertEquals(secondaries.size(), pui.getDexUseInfoMap().size());
+        // We expect that all the contexts are unsupported.
+        String[] expectedContexts =
+                Collections.nCopies(secondaries.size(),
+                        PackageDexUsage.UNSUPPORTED_CLASS_LOADER_CONTEXT).toArray(new String[0]);
+        assertSecondaryUse(mBarUser0UnsupportedClassLoader, pui, secondaries,
+                /*isUsedByOtherApps*/false, mUser0, expectedContexts);
+    }
+
+    @Test
+    public void testNotifyVariableClassLoader() {
+        // Record bar secondaries with the default PathClassLoader.
+        List<String> secondaries = mBarUser0.getSecondaryDexPaths();
+
+        notifyDexLoad(mBarUser0, secondaries, mUser0);
+        PackageUseInfo pui = getPackageUseInfo(mBarUser0);
+        assertIsUsedByOtherApps(mBarUser0, pui, false);
+        assertEquals(secondaries.size(), pui.getDexUseInfoMap().size());
+        assertSecondaryUse(mFooUser0, pui, secondaries, /*isUsedByOtherApps*/false, mUser0);
+
+        // Record bar secondaries again with a different class loader. This will change the context.
+        notifyDexLoad(mBarUser0DelegateLastClassLoader, secondaries, mUser0);
+
+        pui = getPackageUseInfo(mBarUser0);
+        assertIsUsedByOtherApps(mBarUser0, pui, false);
+        assertEquals(secondaries.size(), pui.getDexUseInfoMap().size());
+        // We expect that all the contexts to be changed to variable now.
+        String[] expectedContexts =
+                Collections.nCopies(secondaries.size(),
+                        PackageDexUsage.VARIABLE_CLASS_LOADER_CONTEXT).toArray(new String[0]);
+        assertSecondaryUse(mFooUser0, pui, secondaries, /*isUsedByOtherApps*/false, mUser0,
+                expectedContexts);
+    }
+
+    @Test
+    public void testNotifyUnsupportedClassLoaderDoesNotChange() {
+        List<String> secondaries = mBarUser0UnsupportedClassLoader.getSecondaryDexPaths();
+        notifyDexLoad(mBarUser0UnsupportedClassLoader, secondaries, mUser0);
+
+        PackageUseInfo pui = getPackageUseInfo(mBarUser0UnsupportedClassLoader);
+        assertIsUsedByOtherApps(mBarUser0UnsupportedClassLoader, pui, false);
+        assertEquals(secondaries.size(), pui.getDexUseInfoMap().size());
+        // We expect that all the contexts are unsupported.
+        String[] expectedContexts =
+                Collections.nCopies(secondaries.size(),
+                        PackageDexUsage.UNSUPPORTED_CLASS_LOADER_CONTEXT).toArray(new String[0]);
+        assertSecondaryUse(mBarUser0UnsupportedClassLoader, pui, secondaries,
+                /*isUsedByOtherApps*/false, mUser0, expectedContexts);
+
+        // Record bar secondaries again with a different class loader. This will change the context.
+        // However, because the context was already marked as unsupported we should not chage it.
+        notifyDexLoad(mBarUser0DelegateLastClassLoader, secondaries, mUser0);
+        pui = getPackageUseInfo(mBarUser0UnsupportedClassLoader);
+        assertSecondaryUse(mBarUser0UnsupportedClassLoader, pui, secondaries,
+                /*isUsedByOtherApps*/false, mUser0, expectedContexts);
+
+    }
+
+
     private void assertSecondaryUse(TestData testData, PackageUseInfo pui,
-            List<String> secondaries, boolean isUsedByOtherApps, int ownerUserId) {
+            List<String> secondaries, boolean isUsedByOtherApps, int ownerUserId,
+            String[] expectedContexts) {
+        assertNotNull(expectedContexts);
+        assertEquals(expectedContexts.length, secondaries.size());
+        int index = 0;
         for (String dex : secondaries) {
             DexUseInfo dui = pui.getDexUseInfoMap().get(dex);
             assertNotNull(dui);
@@ -382,16 +454,50 @@
             assertEquals(ownerUserId, dui.getOwnerUserId());
             assertEquals(1, dui.getLoaderIsas().size());
             assertTrue(dui.getLoaderIsas().contains(testData.mLoaderIsa));
+            assertEquals(expectedContexts[index++], dui.getClassLoaderContext());
         }
     }
+    private void assertSecondaryUse(TestData testData, PackageUseInfo pui,
+            List<String> secondaries, boolean isUsedByOtherApps, int ownerUserId) {
+        String[] expectedContexts = DexoptUtils.processContextForDexLoad(
+                Arrays.asList(testData.mClassLoader),
+                Arrays.asList(String.join(File.pathSeparator, secondaries)));
+        assertSecondaryUse(testData, pui, secondaries, isUsedByOtherApps, ownerUserId,
+                expectedContexts);
+    }
 
+    private void assertIsUsedByOtherApps(TestData testData, PackageUseInfo pui,
+            boolean isUsedByOtherApps) {
+        assertIsUsedByOtherApps(testData.getBaseAndSplitDexPaths(), pui, isUsedByOtherApps);
+    }
+
+    private void assertIsUsedByOtherApps(List<String> codePaths, PackageUseInfo pui,
+            boolean isUsedByOtherApps) {
+        for (String codePath : codePaths) {
+            assertEquals(codePath, isUsedByOtherApps, pui.isUsedByOtherApps(codePath));
+        }
+    }
     private void notifyDexLoad(TestData testData, List<String> dexPaths, int loaderUserId) {
-        mDexManager.notifyDexLoad(testData.mPackageInfo.applicationInfo, dexPaths,
+        // By default, assume a single class loader in the chain.
+        // This makes writing tests much easier.
+        List<String> classLoaders = Arrays.asList(testData.mClassLoader);
+        List<String> classPaths = Arrays.asList(String.join(File.pathSeparator, dexPaths));
+        notifyDexLoad(testData, classLoaders, classPaths, loaderUserId);
+    }
+
+    private void notifyDexLoad(TestData testData, List<String> classLoader, List<String> classPaths,
+            int loaderUserId) {
+        mDexManager.notifyDexLoad(testData.mPackageInfo.applicationInfo, classLoader, classPaths,
                 testData.mLoaderIsa, loaderUserId);
     }
 
     private PackageUseInfo getPackageUseInfo(TestData testData) {
-        return mDexManager.getPackageUseInfo(testData.mPackageInfo.packageName);
+        assertTrue(mDexManager.hasInfoOnPackage(testData.mPackageInfo.packageName));
+        return mDexManager.getPackageUseInfoOrDefault(testData.mPackageInfo.packageName);
+    }
+
+    private void assertNoUseInfo(TestData testData) {
+        assertFalse(mDexManager.hasInfoOnPackage(testData.mPackageInfo.packageName));
     }
 
     private static PackageInfo getMockPackageInfo(String packageName, int userId) {
@@ -416,10 +522,16 @@
     private static class TestData {
         private final PackageInfo mPackageInfo;
         private final String mLoaderIsa;
+        private final String mClassLoader;
 
-        private TestData(String  packageName, String loaderIsa, int userId) {
+        private TestData(String packageName, String loaderIsa, int userId, String classLoader) {
             mPackageInfo = getMockPackageInfo(packageName, userId);
             mLoaderIsa = loaderIsa;
+            mClassLoader = classLoader;
+        }
+
+        private TestData(String packageName, String loaderIsa, int userId) {
+            this(packageName, loaderIsa, userId, PATH_CLASS_LOADER_NAME);
         }
 
         private String getPackageName() {
diff --git a/services/tests/servicestests/src/com/android/server/pm/dex/DexoptOptionsTests.java b/services/tests/servicestests/src/com/android/server/pm/dex/DexoptOptionsTests.java
new file mode 100644
index 0000000..c2072df
--- /dev/null
+++ b/services/tests/servicestests/src/com/android/server/pm/dex/DexoptOptionsTests.java
@@ -0,0 +1,143 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License
+ */
+
+package com.android.server.pm.dex;
+
+
+import static com.android.server.pm.PackageManagerServiceCompilerMapping.getCompilerFilterForReason;
+
+import android.support.test.filters.SmallTest;
+import android.support.test.runner.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+import com.android.server.pm.PackageManagerService;
+import com.android.server.pm.PackageManagerServiceCompilerMapping;
+
+@RunWith(AndroidJUnit4.class)
+@SmallTest
+public class DexoptOptionsTests {
+    private final static String mPackageName = "test.android.com";
+    private final static String mCompilerFilter =
+            PackageManagerServiceCompilerMapping.getDefaultCompilerFilter();
+    private final static String mSplitName = "split-A.apk";
+
+    @Test
+    public void testCreateDexoptOptionsEmpty() {
+        DexoptOptions opt = new DexoptOptions(mPackageName, mCompilerFilter, /*flags*/ 0);
+        assertEquals(mPackageName, opt.getPackageName());
+        assertEquals(mCompilerFilter, opt.getCompilerFilter());
+        assertEquals(null, opt.getSplitName());
+        assertFalse(opt.isBootComplete());
+        assertFalse(opt.isCheckForProfileUpdates());
+        assertFalse(opt.isDexoptOnlySecondaryDex());
+        assertFalse(opt.isDexoptOnlySharedDex());
+        assertFalse(opt.isDowngrade());
+        assertFalse(opt.isForce());
+        assertFalse(opt.isDexoptIdleBackgroundJob());
+    }
+
+    @Test
+    public void testCreateDexoptOptionsFull() {
+        int flags =
+                DexoptOptions.DEXOPT_FORCE |
+                DexoptOptions.DEXOPT_BOOT_COMPLETE |
+                DexoptOptions.DEXOPT_CHECK_FOR_PROFILES_UPDATES |
+                DexoptOptions.DEXOPT_ONLY_SECONDARY_DEX |
+                DexoptOptions.DEXOPT_ONLY_SHARED_DEX |
+                DexoptOptions.DEXOPT_DOWNGRADE  |
+                DexoptOptions.DEXOPT_AS_SHARED_LIBRARY |
+                DexoptOptions.DEXOPT_IDLE_BACKGROUND_JOB;
+
+        DexoptOptions opt = new DexoptOptions(mPackageName, mCompilerFilter, flags);
+        assertEquals(mPackageName, opt.getPackageName());
+        assertEquals(mCompilerFilter, opt.getCompilerFilter());
+        assertEquals(null, opt.getSplitName());
+        assertTrue(opt.isBootComplete());
+        assertTrue(opt.isCheckForProfileUpdates());
+        assertTrue(opt.isDexoptOnlySecondaryDex());
+        assertTrue(opt.isDexoptOnlySharedDex());
+        assertTrue(opt.isDowngrade());
+        assertTrue(opt.isForce());
+        assertTrue(opt.isDexoptAsSharedLibrary());
+        assertTrue(opt.isDexoptIdleBackgroundJob());
+    }
+
+    @Test
+    public void testCreateDexoptOptionsReason() {
+        int flags =
+                DexoptOptions.DEXOPT_FORCE |
+                DexoptOptions.DEXOPT_BOOT_COMPLETE |
+                DexoptOptions.DEXOPT_CHECK_FOR_PROFILES_UPDATES;
+
+        int[] reasons = new int[] {
+                PackageManagerService.REASON_FIRST_BOOT,
+                PackageManagerService.REASON_BOOT,
+                PackageManagerService.REASON_INSTALL,
+                PackageManagerService.REASON_BACKGROUND_DEXOPT,
+                PackageManagerService.REASON_AB_OTA,
+                PackageManagerService.REASON_INACTIVE_PACKAGE_DOWNGRADE,};
+
+        for (int reason : reasons) {
+            DexoptOptions opt = new DexoptOptions(mPackageName, reason, flags);
+            assertEquals(mPackageName, opt.getPackageName());
+            assertEquals(getCompilerFilterForReason(reason), opt.getCompilerFilter());
+            assertEquals(null, opt.getSplitName());
+            assertTrue(opt.isBootComplete());
+            assertTrue(opt.isCheckForProfileUpdates());
+            assertFalse(opt.isDexoptOnlySecondaryDex());
+            assertFalse(opt.isDexoptOnlySharedDex());
+            assertFalse(opt.isDowngrade());
+            assertTrue(opt.isForce());
+            assertFalse(opt.isDexoptAsSharedLibrary());
+        }
+    }
+
+    @Test
+    public void testCreateDexoptOptionsSplit() {
+        int flags = DexoptOptions.DEXOPT_FORCE | DexoptOptions.DEXOPT_BOOT_COMPLETE;
+
+        DexoptOptions opt = new DexoptOptions(mPackageName, mCompilerFilter, mSplitName, flags);
+        assertEquals(mPackageName, opt.getPackageName());
+        assertEquals(mCompilerFilter, opt.getCompilerFilter());
+        assertEquals(mSplitName, opt.getSplitName());
+        assertTrue(opt.isBootComplete());
+        assertFalse(opt.isCheckForProfileUpdates());
+        assertFalse(opt.isDexoptOnlySecondaryDex());
+        assertFalse(opt.isDexoptOnlySharedDex());
+        assertFalse(opt.isDowngrade());
+        assertTrue(opt.isForce());
+        assertFalse(opt.isDexoptAsSharedLibrary());
+    }
+
+    @Test
+    public void testCreateDexoptInvalid() {
+        boolean gotException = false;
+        try {
+            int invalidFlags = 999;
+            new DexoptOptions(mPackageName, mCompilerFilter, invalidFlags);
+        } catch (IllegalArgumentException ignore) {
+            gotException = true;
+        }
+
+        assertTrue(gotException);
+    }
+}
diff --git a/services/tests/servicestests/src/com/android/server/pm/dex/DexoptUtilsTest.java b/services/tests/servicestests/src/com/android/server/pm/dex/DexoptUtilsTest.java
new file mode 100644
index 0000000..ff7bd72
--- /dev/null
+++ b/services/tests/servicestests/src/com/android/server/pm/dex/DexoptUtilsTest.java
@@ -0,0 +1,279 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License
+ */
+
+package com.android.server.pm.dex;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertTrue;
+
+import android.content.pm.ApplicationInfo;
+import android.support.test.filters.SmallTest;
+import android.support.test.runner.AndroidJUnit4;
+import android.util.SparseArray;
+
+import dalvik.system.DelegateLastClassLoader;
+import dalvik.system.DexClassLoader;
+import dalvik.system.PathClassLoader;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import java.io.File;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
+@RunWith(AndroidJUnit4.class)
+@SmallTest
+public class DexoptUtilsTest {
+    private static final String DEX_CLASS_LOADER_NAME = DexClassLoader.class.getName();
+    private static final String PATH_CLASS_LOADER_NAME = PathClassLoader.class.getName();
+    private static final String DELEGATE_LAST_CLASS_LOADER_NAME =
+            DelegateLastClassLoader.class.getName();
+
+    private ApplicationInfo createMockApplicationInfo(String baseClassLoader, boolean addSplits,
+            boolean addSplitDependencies) {
+        ApplicationInfo ai = new ApplicationInfo();
+        String codeDir = "/data/app/mock.android.com";
+        ai.setBaseCodePath(codeDir + "/base.dex");
+        ai.privateFlags = ai.privateFlags | ApplicationInfo.PRIVATE_FLAG_ISOLATED_SPLIT_LOADING;
+
+        if (addSplits) {
+            ai.setSplitCodePaths(new String[]{
+                    codeDir + "/base-1.dex",
+                    codeDir + "/base-2.dex",
+                    codeDir + "/base-3.dex",
+                    codeDir + "/base-4.dex",
+                    codeDir + "/base-5.dex",
+                    codeDir + "/base-6.dex"});
+
+            if (addSplitDependencies) {
+                ai.splitDependencies = new SparseArray<>(6 + 1);
+                ai.splitDependencies.put(0, new int[] {-1}); // base has no dependency
+                ai.splitDependencies.put(1, new int[] {2}); // split 1 depends on 2
+                ai.splitDependencies.put(2, new int[] {4}); // split 2 depends on 4
+                ai.splitDependencies.put(3, new int[] {4}); // split 3 depends on 4
+                ai.splitDependencies.put(4, new int[] {0}); // split 4 depends on base
+                ai.splitDependencies.put(5, new int[] {0}); // split 5 depends on base
+                ai.splitDependencies.put(6, new int[] {5}); // split 6 depends on 5
+            }
+        }
+        return ai;
+    }
+
+    @Test
+    public void testSplitChain() {
+        ApplicationInfo ai = createMockApplicationInfo(PATH_CLASS_LOADER_NAME, true, true);
+        String[] sharedLibrary = new String[] {"a.dex", "b.dex"};
+        String[] contexts = DexoptUtils.getClassLoaderContexts(ai, sharedLibrary);
+
+        assertEquals(7, contexts.length);
+        assertEquals("PCL[a.dex:b.dex]", contexts[0]);
+        assertEquals("PCL[];PCL[base-2.dex];PCL[base-4.dex];PCL[a.dex:b.dex:base.dex]",
+                contexts[1]);
+        assertEquals("PCL[];PCL[base-4.dex];PCL[a.dex:b.dex:base.dex]", contexts[2]);
+        assertEquals("PCL[];PCL[base-4.dex];PCL[a.dex:b.dex:base.dex]", contexts[3]);
+        assertEquals("PCL[];PCL[a.dex:b.dex:base.dex]", contexts[4]);
+        assertEquals("PCL[];PCL[a.dex:b.dex:base.dex]", contexts[5]);
+        assertEquals("PCL[];PCL[base-5.dex];PCL[a.dex:b.dex:base.dex]", contexts[6]);
+    }
+
+    @Test
+    public void testSplitChainNoSplitDependencies() {
+        ApplicationInfo ai = createMockApplicationInfo(PATH_CLASS_LOADER_NAME, true, false);
+        String[] sharedLibrary = new String[] {"a.dex", "b.dex"};
+        String[] contexts = DexoptUtils.getClassLoaderContexts(ai, sharedLibrary);
+
+        assertEquals(7, contexts.length);
+        assertEquals("PCL[a.dex:b.dex]", contexts[0]);
+        assertEquals("PCL[a.dex:b.dex:base.dex]", contexts[1]);
+        assertEquals("PCL[a.dex:b.dex:base.dex:base-1.dex]", contexts[2]);
+        assertEquals("PCL[a.dex:b.dex:base.dex:base-1.dex:base-2.dex]", contexts[3]);
+        assertEquals("PCL[a.dex:b.dex:base.dex:base-1.dex:base-2.dex:base-3.dex]", contexts[4]);
+        assertEquals(
+                "PCL[a.dex:b.dex:base.dex:base-1.dex:base-2.dex:base-3.dex:base-4.dex]",
+                contexts[5]);
+        assertEquals(
+                "PCL[a.dex:b.dex:base.dex:base-1.dex:base-2.dex:base-3.dex:base-4.dex:base-5.dex]",
+                contexts[6]);
+    }
+
+    @Test
+    public void testSplitChainNoIsolationNoSharedLibrary() {
+        ApplicationInfo ai = createMockApplicationInfo(PATH_CLASS_LOADER_NAME, true, true);
+        ai.privateFlags = ai.privateFlags & (~ApplicationInfo.PRIVATE_FLAG_ISOLATED_SPLIT_LOADING);
+        String[] contexts = DexoptUtils.getClassLoaderContexts(ai, null);
+
+        assertEquals(7, contexts.length);
+        assertEquals("PCL[]", contexts[0]);
+        assertEquals("PCL[base.dex]", contexts[1]);
+        assertEquals("PCL[base.dex:base-1.dex]", contexts[2]);
+        assertEquals("PCL[base.dex:base-1.dex:base-2.dex]", contexts[3]);
+        assertEquals("PCL[base.dex:base-1.dex:base-2.dex:base-3.dex]", contexts[4]);
+        assertEquals("PCL[base.dex:base-1.dex:base-2.dex:base-3.dex:base-4.dex]", contexts[5]);
+        assertEquals(
+                "PCL[base.dex:base-1.dex:base-2.dex:base-3.dex:base-4.dex:base-5.dex]",
+                contexts[6]);
+    }
+    @Test
+    public void testSplitChainNoSharedLibraries() {
+        ApplicationInfo ai = createMockApplicationInfo(
+                DELEGATE_LAST_CLASS_LOADER_NAME, true, true);
+        String[] contexts = DexoptUtils.getClassLoaderContexts(ai, null);
+
+        assertEquals(7, contexts.length);
+        assertEquals("PCL[]", contexts[0]);
+        assertEquals("PCL[];PCL[base-2.dex];PCL[base-4.dex];PCL[base.dex]", contexts[1]);
+        assertEquals("PCL[];PCL[base-4.dex];PCL[base.dex]", contexts[2]);
+        assertEquals("PCL[];PCL[base-4.dex];PCL[base.dex]", contexts[3]);
+        assertEquals("PCL[];PCL[base.dex]", contexts[4]);
+        assertEquals("PCL[];PCL[base.dex]", contexts[5]);
+        assertEquals("PCL[];PCL[base-5.dex];PCL[base.dex]", contexts[6]);
+    }
+
+    @Test
+    public void testSplitChainWithNullPrimaryClassLoader() {
+        // A null classLoaderName should mean PathClassLoader.
+        ApplicationInfo ai = createMockApplicationInfo(null, true, true);
+        String[] sharedLibrary = new String[] {"a.dex", "b.dex"};
+        String[] contexts = DexoptUtils.getClassLoaderContexts(ai, sharedLibrary);
+
+        assertEquals(7, contexts.length);
+        assertEquals("PCL[a.dex:b.dex]", contexts[0]);
+        assertEquals("PCL[];PCL[base-2.dex];PCL[base-4.dex];PCL[a.dex:b.dex:base.dex]", contexts[1]);
+        assertEquals("PCL[];PCL[base-4.dex];PCL[a.dex:b.dex:base.dex]", contexts[2]);
+        assertEquals("PCL[];PCL[base-4.dex];PCL[a.dex:b.dex:base.dex]", contexts[3]);
+        assertEquals("PCL[];PCL[a.dex:b.dex:base.dex]", contexts[4]);
+        assertEquals("PCL[];PCL[a.dex:b.dex:base.dex]", contexts[5]);
+        assertEquals("PCL[];PCL[base-5.dex];PCL[a.dex:b.dex:base.dex]", contexts[6]);
+    }
+
+    @Test
+    public void tesNoSplits() {
+        ApplicationInfo ai = createMockApplicationInfo(PATH_CLASS_LOADER_NAME, false, false);
+        String[] sharedLibrary = new String[] {"a.dex", "b.dex"};
+        String[] contexts = DexoptUtils.getClassLoaderContexts(ai, sharedLibrary);
+
+        assertEquals(1, contexts.length);
+        assertEquals("PCL[a.dex:b.dex]", contexts[0]);
+    }
+
+    @Test
+    public void tesNoSplitsNullClassLoaderName() {
+        ApplicationInfo ai = createMockApplicationInfo(null, false, false);
+        String[] sharedLibrary = new String[] {"a.dex", "b.dex"};
+        String[] contexts = DexoptUtils.getClassLoaderContexts(ai, sharedLibrary);
+
+        assertEquals(1, contexts.length);
+        assertEquals("PCL[a.dex:b.dex]", contexts[0]);
+    }
+
+    @Test
+    public void tesNoSplitDelegateLast() {
+        ApplicationInfo ai = createMockApplicationInfo(
+                DELEGATE_LAST_CLASS_LOADER_NAME, false, false);
+        String[] sharedLibrary = new String[] {"a.dex", "b.dex"};
+        String[] contexts = DexoptUtils.getClassLoaderContexts(ai, sharedLibrary);
+
+        assertEquals(1, contexts.length);
+        assertEquals("PCL[a.dex:b.dex]", contexts[0]);
+    }
+
+    @Test
+    public void tesNoSplitsNoSharedLibraries() {
+        ApplicationInfo ai = createMockApplicationInfo(PATH_CLASS_LOADER_NAME, false, false);
+        String[] contexts = DexoptUtils.getClassLoaderContexts(ai, null);
+
+        assertEquals(1, contexts.length);
+        assertEquals("PCL[]", contexts[0]);
+    }
+
+    @Test
+    public void tesNoSplitDelegateLastNoSharedLibraries() {
+        ApplicationInfo ai = createMockApplicationInfo(
+                DELEGATE_LAST_CLASS_LOADER_NAME, false, false);
+        String[] contexts = DexoptUtils.getClassLoaderContexts(ai, null);
+
+        assertEquals(1, contexts.length);
+        assertEquals("PCL[]", contexts[0]);
+    }
+
+    @Test
+    public void testProcessContextForDexLoad() {
+        List<String> classLoaders = Arrays.asList(
+                DELEGATE_LAST_CLASS_LOADER_NAME,
+                PATH_CLASS_LOADER_NAME,
+                PATH_CLASS_LOADER_NAME);
+        List<String> classPaths = Arrays.asList(
+                String.join(File.pathSeparator, "foo.dex", "bar.dex"),
+                String.join(File.pathSeparator, "parent1.dex"),
+                String.join(File.pathSeparator, "parent2.dex", "parent3.dex"));
+        String[] context = DexoptUtils.processContextForDexLoad(classLoaders, classPaths);
+        assertNotNull(context);
+        assertEquals(2, context.length);
+        assertEquals("DLC[];PCL[parent1.dex];PCL[parent2.dex:parent3.dex]", context[0]);
+        assertEquals("DLC[foo.dex];PCL[parent1.dex];PCL[parent2.dex:parent3.dex]", context[1]);
+    }
+
+    @Test
+    public void testProcessContextForDexLoadSingleElement() {
+        List<String> classLoaders = Arrays.asList(PATH_CLASS_LOADER_NAME);
+        List<String> classPaths = Arrays.asList(
+                String.join(File.pathSeparator, "foo.dex", "bar.dex", "zoo.dex"));
+        String[] context = DexoptUtils.processContextForDexLoad(classLoaders, classPaths);
+        assertNotNull(context);
+        assertEquals(3, context.length);
+        assertEquals("PCL[]", context[0]);
+        assertEquals("PCL[foo.dex]", context[1]);
+        assertEquals("PCL[foo.dex:bar.dex]", context[2]);
+    }
+
+    @Test
+    public void testProcessContextForDexLoadUnsupported() {
+        List<String> classLoaders = Arrays.asList(
+                DELEGATE_LAST_CLASS_LOADER_NAME,
+                "unsupported.class.loader");
+        List<String> classPaths = Arrays.asList(
+                String.join(File.pathSeparator, "foo.dex", "bar.dex"),
+                String.join(File.pathSeparator, "parent1.dex"));
+        String[] context = DexoptUtils.processContextForDexLoad(classLoaders, classPaths);
+        assertNull(context);
+    }
+
+    @Test
+    public void testProcessContextForDexLoadIllegalCallEmptyList() {
+        boolean gotException = false;
+        try {
+            DexoptUtils.processContextForDexLoad(Collections.emptyList(), Collections.emptyList());
+        } catch (IllegalArgumentException ignore) {
+            gotException = true;
+        }
+        assertTrue(gotException);
+    }
+
+    @Test
+    public void testProcessContextForDexLoadIllegalCallDifferentSize() {
+        boolean gotException = false;
+        try {
+            DexoptUtils.processContextForDexLoad(Collections.emptyList(), Arrays.asList("a"));
+        } catch (IllegalArgumentException ignore) {
+            gotException = true;
+        }
+        assertTrue(gotException);
+    }
+}
diff --git a/services/tests/servicestests/src/com/android/server/pm/dex/PackageDexUsageTests.java b/services/tests/servicestests/src/com/android/server/pm/dex/PackageDexUsageTests.java
index 2e99433..69a148d 100644
--- a/services/tests/servicestests/src/com/android/server/pm/dex/PackageDexUsageTests.java
+++ b/services/tests/servicestests/src/com/android/server/pm/dex/PackageDexUsageTests.java
@@ -21,6 +21,7 @@
 import android.support.test.runner.AndroidJUnit4;
 import dalvik.system.VMRuntime;
 
+import java.util.Collections;
 import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
@@ -72,25 +73,25 @@
         String isa = VMRuntime.getInstructionSet(Build.SUPPORTED_ABIS[0]);
 
         mFooBaseUser0 = new TestData(fooPackageName,
-                fooCodeDir + "base.apk", 0, isa, false, true);
+                fooCodeDir + "base.apk", 0, isa, false, true, fooPackageName);
 
         mFooSplit1User0 = new TestData(fooPackageName,
-                fooCodeDir + "split-1.apk", 0, isa, false, true);
+                fooCodeDir + "split-1.apk", 0, isa, false, true, fooPackageName);
 
         mFooSplit2UsedByOtherApps0 = new TestData(fooPackageName,
-                fooCodeDir + "split-2.apk", 0, isa, true, true);
+                fooCodeDir + "split-2.apk", 0, isa, true, true, "used.by.other.com");
 
         mFooSecondary1User0 = new TestData(fooPackageName,
-                fooDataDir + "sec-1.dex", 0, isa, false, false);
+                fooDataDir + "sec-1.dex", 0, isa, false, false, fooPackageName);
 
         mFooSecondary1User1 = new TestData(fooPackageName,
-                fooDataDir + "sec-1.dex", 1, isa, false, false);
+                fooDataDir + "sec-1.dex", 1, isa, false, false, fooPackageName);
 
         mFooSecondary2UsedByOtherApps0 = new TestData(fooPackageName,
-                fooDataDir + "sec-2.dex", 0, isa, true, false);
+                fooDataDir + "sec-2.dex", 0, isa, true, false, "used.by.other.com");
 
         mInvalidIsa = new TestData(fooPackageName,
-                fooCodeDir + "base.apk", 0, "INVALID_ISA", false, true);
+                fooCodeDir + "base.apk", 0, "INVALID_ISA", false, true, "INALID_USER");
 
         String barPackageName = "com.google.bar";
         String barCodeDir = "/data/app/com.google.bar/";
@@ -98,11 +99,11 @@
         String barDataDir1 = "/data/user/1/com.google.bar/";
 
         mBarBaseUser0 = new TestData(barPackageName,
-                barCodeDir + "base.apk", 0, isa, false, true);
+                barCodeDir + "base.apk", 0, isa, false, true, barPackageName);
         mBarSecondary1User0 = new TestData(barPackageName,
-                barDataDir + "sec-1.dex", 0, isa, false, false);
+                barDataDir + "sec-1.dex", 0, isa, false, false, barPackageName);
         mBarSecondary2User1 = new TestData(barPackageName,
-                barDataDir1 + "sec-2.dex", 1, isa, false, false);
+                barDataDir1 + "sec-2.dex", 1, isa, false, false, barPackageName);
     }
 
     @Test
@@ -249,7 +250,10 @@
         Map<String, Set<Integer>> packageToUsersMap = new HashMap<>();
         packageToUsersMap.put(mBarSecondary2User1.mPackageName,
                 new HashSet<>(Arrays.asList(mBarSecondary2User1.mOwnerUserId)));
-        mPackageDexUsage.syncData(packageToUsersMap);
+        Map<String, Set<String>> packageToCodePaths = new HashMap<>();
+        packageToCodePaths.put(mBarBaseUser0.mPackageName,
+                new HashSet<>(Arrays.asList(mBarBaseUser0.mDexFile)));
+        mPackageDexUsage.syncData(packageToUsersMap, packageToCodePaths);
 
         // Assert that only user 1 files are there.
         assertPackageDexUsage(mBarBaseUser0, mBarSecondary2User1);
@@ -319,7 +323,8 @@
             mFooSplit2UsedByOtherApps0.mOwnerUserId,
             mFooSplit2UsedByOtherApps0.mLoaderIsa,
             /*mIsUsedByOtherApps*/false,
-            mFooSplit2UsedByOtherApps0.mPrimaryOrSplit);
+            mFooSplit2UsedByOtherApps0.mPrimaryOrSplit,
+            mFooSplit2UsedByOtherApps0.mUsedBy);
         assertPackageDexUsage(noLongerUsedByOtherApps);
     }
 
@@ -332,14 +337,223 @@
         assertFalse(mPackageDexUsage.clearUsedByOtherApps(mFooSplit2UsedByOtherApps0.mPackageName));
     }
 
+    @Test
+    public void testRecordDexFileUsers() {
+        PackageDexUsage packageDexUsageRecordUsers = new PackageDexUsage();
+        Set<String> users = new HashSet<>(Arrays.asList(
+                new String[] {"another.package.1"}));
+        Set<String> usersExtra = new HashSet<>(Arrays.asList(
+                new String[] {"another.package.2", "another.package.3"}));
+
+        assertTrue(record(packageDexUsageRecordUsers, mFooSplit2UsedByOtherApps0, users));
+        assertTrue(record(packageDexUsageRecordUsers, mFooSplit2UsedByOtherApps0, usersExtra));
+
+        assertTrue(record(packageDexUsageRecordUsers, mFooSecondary1User0, users));
+        assertTrue(record(packageDexUsageRecordUsers, mFooSecondary1User0, usersExtra));
+
+        packageDexUsageRecordUsers = writeAndReadBack(packageDexUsageRecordUsers);
+        // Verify that the users were recorded.
+        Set<String> userAll = new HashSet<>(users);
+        userAll.addAll(usersExtra);
+        assertPackageDexUsage(packageDexUsageRecordUsers, userAll, mFooSplit2UsedByOtherApps0,
+                mFooSecondary1User0);
+    }
+
+    @Test
+    public void testRecordDexFileUsersNotTheOwningPackage() {
+        PackageDexUsage packageDexUsageRecordUsers = new PackageDexUsage();
+        Set<String> users = new HashSet<>(Arrays.asList(
+                new String[] {mFooSplit2UsedByOtherApps0.mPackageName}));
+        Set<String> usersExtra = new HashSet<>(Arrays.asList(
+                new String[] {"another.package.2", "another.package.3"}));
+
+        assertTrue(record(packageDexUsageRecordUsers, mFooSplit2UsedByOtherApps0, users));
+        assertTrue(record(packageDexUsageRecordUsers, mFooSplit2UsedByOtherApps0, usersExtra));
+
+        assertTrue(record(packageDexUsageRecordUsers, mFooSecondary1User0, users));
+        assertTrue(record(packageDexUsageRecordUsers, mFooSecondary1User0, usersExtra));
+
+        packageDexUsageRecordUsers = writeAndReadBack(packageDexUsageRecordUsers);
+        // Verify that only the non owning packages were recorded.
+        assertPackageDexUsage(packageDexUsageRecordUsers, usersExtra, mFooSplit2UsedByOtherApps0,
+                mFooSecondary1User0);
+    }
+
+    @Test
+    public void testRecordClassLoaderContextVariableContext() {
+        // Record a secondary dex file.
+        assertTrue(record(mFooSecondary1User0));
+        // Now update its context.
+        TestData fooSecondary1User0NewContext = mFooSecondary1User0.updateClassLoaderContext(
+                "PCL[new_context.dex]");
+        assertTrue(record(fooSecondary1User0NewContext));
+
+        // Not check that the context was switch to variable.
+        TestData expectedContext = mFooSecondary1User0.updateClassLoaderContext(
+                PackageDexUsage.VARIABLE_CLASS_LOADER_CONTEXT);
+
+        assertPackageDexUsage(null, expectedContext);
+        writeAndReadBack();
+        assertPackageDexUsage(null, expectedContext);
+    }
+
+    @Test
+    public void testRecordClassLoaderContextUnsupportedContext() {
+        // Record a secondary dex file.
+        assertTrue(record(mFooSecondary1User0));
+        // Now update its context.
+        TestData unsupportedContext = mFooSecondary1User0.updateClassLoaderContext(
+                PackageDexUsage.UNSUPPORTED_CLASS_LOADER_CONTEXT);
+        assertTrue(record(unsupportedContext));
+
+        assertPackageDexUsage(null, unsupportedContext);
+        writeAndReadBack();
+        assertPackageDexUsage(null, unsupportedContext);
+    }
+
+    @Test
+    public void testRecordClassLoaderContextTransitionFromUnknown() {
+        // Record a secondary dex file.
+        TestData unknownContext = mFooSecondary1User0.updateClassLoaderContext(
+                PackageDexUsage.UNKNOWN_CLASS_LOADER_CONTEXT);
+        assertTrue(record(unknownContext));
+
+        assertPackageDexUsage(null, unknownContext);
+        writeAndReadBack();
+        assertPackageDexUsage(null, unknownContext);
+
+        // Now update the secondary dex record with a class loader context. This simulates the
+        // version 2 to version 3 upgrade.
+
+        assertTrue(record(mFooSecondary1User0));
+
+        assertPackageDexUsage(null, mFooSecondary1User0);
+        writeAndReadBack();
+        assertPackageDexUsage(null, mFooSecondary1User0);
+    }
+
+    @Test
+    public void testDexUsageClassLoaderContext() {
+        final boolean isUsedByOtherApps = false;
+        final int userId = 0;
+        PackageDexUsage.DexUseInfo validContext = new DexUseInfo(isUsedByOtherApps, userId,
+                "valid_context", "arm");
+        assertFalse(validContext.isUnknownClassLoaderContext());
+        assertFalse(validContext.isUnsupportedClassLoaderContext());
+        assertFalse(validContext.isVariableClassLoaderContext());
+
+        PackageDexUsage.DexUseInfo unsupportedContext = new DexUseInfo(isUsedByOtherApps, userId,
+                PackageDexUsage.UNSUPPORTED_CLASS_LOADER_CONTEXT, "arm");
+        assertFalse(unsupportedContext.isUnknownClassLoaderContext());
+        assertTrue(unsupportedContext.isUnsupportedClassLoaderContext());
+        assertFalse(unsupportedContext.isVariableClassLoaderContext());
+
+        PackageDexUsage.DexUseInfo variableContext = new DexUseInfo(isUsedByOtherApps, userId,
+                PackageDexUsage.VARIABLE_CLASS_LOADER_CONTEXT, "arm");
+        assertFalse(variableContext.isUnknownClassLoaderContext());
+        assertFalse(variableContext.isUnsupportedClassLoaderContext());
+        assertTrue(variableContext.isVariableClassLoaderContext());
+
+        PackageDexUsage.DexUseInfo unknownContext = new DexUseInfo(isUsedByOtherApps, userId,
+                PackageDexUsage.UNKNOWN_CLASS_LOADER_CONTEXT, "arm");
+        assertTrue(unknownContext.isUnknownClassLoaderContext());
+        assertFalse(unknownContext.isUnsupportedClassLoaderContext());
+        assertFalse(unknownContext.isVariableClassLoaderContext());
+    }
+
+    @Test
+    public void testReadVersion1() {
+        String isa = VMRuntime.getInstructionSet(Build.SUPPORTED_ABIS[0]);
+        // Equivalent to
+        //   record(mFooSplit2UsedByOtherApps0);
+        //   record(mFooSecondary1User0);
+        //   record(mFooSecondary2UsedByOtherApps0);
+        //   record(mBarBaseUser0);
+        //   record(mBarSecondary1User0);
+        String content = "PACKAGE_MANAGER__PACKAGE_DEX_USAGE__1\n"
+                + "com.google.foo,1\n"
+                + "#/data/user/0/com.google.foo/sec-1.dex\n"
+                + "0,0," + isa + "\n"
+                + "#/data/user/0/com.google.foo/sec-2.dex\n"
+                + "0,1," + isa + "\n"
+                + "com.google.bar,0\n"
+                + "#/data/user/0/com.google.bar/sec-1.dex\n"
+                + "0,0," + isa + "\n";
+
+        PackageDexUsage packageDexUsage = new PackageDexUsage();
+        try {
+            packageDexUsage.read(new StringReader(content));
+        } catch (IOException e) {
+            fail();
+        }
+
+        // After the read we must sync the data to fill the missing information on the code paths.
+        Map<String, Set<Integer>> packageToUsersMap = new HashMap<>();
+        Map<String, Set<String>> packageToCodePaths = new HashMap<>();
+
+        // Handle foo package.
+        packageToUsersMap.put(mFooSplit2UsedByOtherApps0.mPackageName,
+            new HashSet<>(Arrays.asList(mFooSplit2UsedByOtherApps0.mOwnerUserId)));
+        packageToCodePaths.put(mFooSplit2UsedByOtherApps0.mPackageName,
+            new HashSet<>(Arrays.asList(mFooSplit2UsedByOtherApps0.mDexFile,
+                mFooSplit1User0.mDexFile, mFooBaseUser0.mDexFile)));
+        // Handle bar package.
+        packageToUsersMap.put(mBarBaseUser0.mPackageName,
+            new HashSet<>(Arrays.asList(mBarBaseUser0.mOwnerUserId)));
+        packageToCodePaths.put(mBarBaseUser0.mPackageName,
+            new HashSet<>(Arrays.asList(mBarBaseUser0.mDexFile)));
+
+        // Sync the data.
+        packageDexUsage.syncData(packageToUsersMap, packageToCodePaths);
+
+        // Update the class loaders to unknown before asserting if needed. Before version 2 we
+        // didn't have any.
+        String unknown = PackageDexUsage.UNKNOWN_CLASS_LOADER_CONTEXT;
+        TestData fooBaseUser0 = mFooBaseUser0.updateClassLoaderContext(unknown);
+        TestData fooSplit1User0 = mFooSplit1User0.updateClassLoaderContext(unknown);
+        TestData fooSplit2UsedByOtherApps0 =
+            mFooSplit2UsedByOtherApps0.updateClassLoaderContext(unknown);
+        TestData fooSecondary1User0 = mFooSecondary1User0.updateClassLoaderContext(unknown);
+        TestData fooSecondary2UsedByOtherApps0 =
+            mFooSecondary2UsedByOtherApps0.updateClassLoaderContext(unknown);
+        TestData barBaseUser0 = mBarBaseUser0.updateClassLoaderContext(unknown);
+        TestData barSecondary1User0 = mBarSecondary1User0.updateClassLoaderContext(unknown);
+
+        // Assert foo code paths. Note that we ignore the users during upgrade.
+        final Set<String> ignoredUsers = null;
+        assertPackageDexUsage(packageDexUsage, ignoredUsers,
+            fooSplit2UsedByOtherApps0, fooSecondary1User0, fooSecondary2UsedByOtherApps0);
+        // Because fooSplit2UsedByOtherApps0 is used by others, all the other code paths must
+        // share the same data.
+        assertPackageDexUsage(packageDexUsage, ignoredUsers,
+            fooSplit1User0.updateUseByOthers(true),
+            fooSecondary1User0, fooSecondary2UsedByOtherApps0);
+        assertPackageDexUsage(packageDexUsage, ignoredUsers, fooBaseUser0.updateUseByOthers(true),
+            fooSecondary1User0, fooSecondary2UsedByOtherApps0);
+
+        // Assert bar code paths. Note that we ignore the users during upgrade.
+        assertPackageDexUsage(packageDexUsage, ignoredUsers, barBaseUser0, barSecondary1User0);
+    }
+
     private void assertPackageDexUsage(TestData primary, TestData... secondaries) {
+        assertPackageDexUsage(mPackageDexUsage, null, primary, secondaries);
+    }
+
+    private void assertPackageDexUsage(PackageDexUsage packageDexUsage, Set<String> users,
+            TestData primary, TestData... secondaries) {
         String packageName = primary == null ? secondaries[0].mPackageName : primary.mPackageName;
-        boolean primaryUsedByOtherApps = primary == null ? false : primary.mUsedByOtherApps;
-        PackageUseInfo pInfo = mPackageDexUsage.getPackageUseInfo(packageName);
+        boolean primaryUsedByOtherApps = primary != null && primary.mUsedByOtherApps;
+        PackageUseInfo pInfo = packageDexUsage.getPackageUseInfo(packageName);
 
         // Check package use info
         assertNotNull(pInfo);
-        assertEquals(primaryUsedByOtherApps, pInfo.isUsedByOtherApps());
+        if (primary != null) {
+            assertEquals(primaryUsedByOtherApps, pInfo.isUsedByOtherApps(primary.mDexFile));
+            if (users != null) {
+                assertEquals(pInfo.getLoadingPackages(primary.mDexFile), users);
+            }
+        }
+
         Map<String, DexUseInfo> dexUseInfoMap = pInfo.getDexUseInfoMap();
         assertEquals(secondaries.length, dexUseInfoMap.size());
 
@@ -351,24 +565,45 @@
             assertEquals(testData.mOwnerUserId, dInfo.getOwnerUserId());
             assertEquals(1, dInfo.getLoaderIsas().size());
             assertTrue(dInfo.getLoaderIsas().contains(testData.mLoaderIsa));
+            if (users != null) {
+                 assertEquals(dInfo.getLoadingPackages(), users);
+            }
+
+            assertEquals(testData.mClassLoaderContext, dInfo.getClassLoaderContext());
         }
     }
 
     private boolean record(TestData testData) {
         return mPackageDexUsage.record(testData.mPackageName, testData.mDexFile,
-                testData.mOwnerUserId, testData.mLoaderIsa, testData.mUsedByOtherApps,
-                testData.mPrimaryOrSplit);
+               testData.mOwnerUserId, testData.mLoaderIsa, testData.mUsedByOtherApps,
+               testData.mPrimaryOrSplit, testData.mUsedBy, testData.mClassLoaderContext);
+    }
+
+    private boolean record(PackageDexUsage packageDexUsage, TestData testData, Set<String> users) {
+        boolean result = true;
+        for (String user : users) {
+            result = result && packageDexUsage.record(testData.mPackageName, testData.mDexFile,
+                    testData.mOwnerUserId, testData.mLoaderIsa, testData.mUsedByOtherApps,
+                    testData.mPrimaryOrSplit, user, testData.mClassLoaderContext);
+        }
+        return result;
     }
 
     private void writeAndReadBack() {
+        mPackageDexUsage = writeAndReadBack(mPackageDexUsage);
+    }
+
+    private PackageDexUsage writeAndReadBack(PackageDexUsage packageDexUsage) {
         try {
             StringWriter writer = new StringWriter();
-            mPackageDexUsage.write(writer);
+            packageDexUsage.write(writer);
 
-            mPackageDexUsage = new PackageDexUsage();
-            mPackageDexUsage.read(new StringReader(writer.toString()));
+            PackageDexUsage newPackageDexUsage = new PackageDexUsage();
+            newPackageDexUsage.read(new StringReader(writer.toString()));
+            return newPackageDexUsage;
         } catch (IOException e) {
             fail("Unexpected IOException: " + e.getMessage());
+            return null;
         }
     }
 
@@ -379,16 +614,35 @@
         private final String mLoaderIsa;
         private final boolean mUsedByOtherApps;
         private final boolean mPrimaryOrSplit;
+        private final String mUsedBy;
+        private final String mClassLoaderContext;
 
         private TestData(String packageName, String dexFile, int ownerUserId,
-                 String loaderIsa, boolean isUsedByOtherApps, boolean primaryOrSplit) {
+                String loaderIsa, boolean isUsedByOtherApps, boolean primaryOrSplit, String usedBy) {
+            this(packageName, dexFile, ownerUserId, loaderIsa, isUsedByOtherApps, primaryOrSplit,
+                    usedBy, "DefaultClassLoaderContextFor_" + dexFile);
+        }
+        private TestData(String packageName, String dexFile, int ownerUserId,
+                String loaderIsa, boolean isUsedByOtherApps, boolean primaryOrSplit, String usedBy,
+                String classLoaderContext) {
             mPackageName = packageName;
             mDexFile = dexFile;
             mOwnerUserId = ownerUserId;
             mLoaderIsa = loaderIsa;
             mUsedByOtherApps = isUsedByOtherApps;
             mPrimaryOrSplit = primaryOrSplit;
+            mUsedBy = usedBy;
+            mClassLoaderContext = classLoaderContext;
         }
 
+        private TestData updateClassLoaderContext(String newContext) {
+            return new TestData(mPackageName, mDexFile, mOwnerUserId, mLoaderIsa, mUsedByOtherApps,
+                    mPrimaryOrSplit, mUsedBy, newContext);
+        }
+
+        private TestData updateUseByOthers(boolean newUsedByOthers) {
+            return new TestData(mPackageName, mDexFile, mOwnerUserId, mLoaderIsa, newUsedByOthers,
+                mPrimaryOrSplit, mUsedBy, mClassLoaderContext);
+        }
     }
 }
diff --git a/services/usage/java/com/android/server/usage/StorageStatsService.java b/services/usage/java/com/android/server/usage/StorageStatsService.java
index 9f4fb85..21b11b0 100644
--- a/services/usage/java/com/android/server/usage/StorageStatsService.java
+++ b/services/usage/java/com/android/server/usage/StorageStatsService.java
@@ -392,6 +392,7 @@
         res.videoBytes = stats[2];
         res.imageBytes = stats[3];
         res.appBytes = stats[4];
+        res.obbBytes = stats[5];
         return res;
     }
 
diff --git a/telecomm/java/android/telecom/ConnectionService.java b/telecomm/java/android/telecom/ConnectionService.java
index 6f970fa..a81fba9 100644
--- a/telecomm/java/android/telecom/ConnectionService.java
+++ b/telecomm/java/android/telecom/ConnectionService.java
@@ -1449,6 +1449,12 @@
      */
     private void notifyCreateConnectionComplete(final String callId) {
         Log.i(this, "notifyCreateConnectionComplete %s", callId);
+        if (callId == null) {
+            // This could happen if the connection fails quickly and is removed from the
+            // ConnectionService before Telecom sends the create connection complete callback.
+            Log.w(this, "notifyCreateConnectionComplete: callId is null.");
+            return;
+        }
         onCreateConnectionComplete(findConnectionForAction(callId,
                 "notifyCreateConnectionComplete"));
     }
@@ -2177,7 +2183,7 @@
     }
 
     private Connection findConnectionForAction(String callId, String action) {
-        if (mConnectionById.containsKey(callId)) {
+        if (callId != null && mConnectionById.containsKey(callId)) {
             return mConnectionById.get(callId);
         }
         Log.w(this, "%s - Cannot find Connection %s", action, callId);
diff --git a/telecomm/java/android/telecom/DefaultDialerManager.java b/telecomm/java/android/telecom/DefaultDialerManager.java
index cd65232..2a707c9 100644
--- a/telecomm/java/android/telecom/DefaultDialerManager.java
+++ b/telecomm/java/android/telecom/DefaultDialerManager.java
@@ -170,7 +170,7 @@
 
         final Intent dialIntentWithTelScheme = new Intent(Intent.ACTION_DIAL);
         dialIntentWithTelScheme.setData(Uri.fromParts(PhoneAccount.SCHEME_TEL, "", null));
-        return filterByIntent(context, packageNames, dialIntentWithTelScheme);
+        return filterByIntent(context, packageNames, dialIntentWithTelScheme, userId);
     }
 
     public static List<String> getInstalledDialerApplications(Context context) {
@@ -204,17 +204,18 @@
      *
      * @param context A valid context
      * @param packageNames List of package names to filter.
+     * @param userId The UserId
      * @return The filtered list.
      */
     private static List<String> filterByIntent(Context context, List<String> packageNames,
-            Intent intent) {
+            Intent intent, int userId) {
         if (packageNames == null || packageNames.isEmpty()) {
             return new ArrayList<>();
         }
 
         final List<String> result = new ArrayList<>();
         final List<ResolveInfo> resolveInfoList = context.getPackageManager()
-                .queryIntentActivities(intent, 0);
+                .queryIntentActivitiesAsUser(intent, 0, userId);
         final int length = resolveInfoList.size();
         for (int i = 0; i < length; i++) {
             final ActivityInfo info = resolveInfoList.get(i).activityInfo;
diff --git a/telephony/java/android/telephony/CarrierConfigManager.java b/telephony/java/android/telephony/CarrierConfigManager.java
index 1d4a5cf..2e621f1 100644
--- a/telephony/java/android/telephony/CarrierConfigManager.java
+++ b/telephony/java/android/telephony/CarrierConfigManager.java
@@ -1508,6 +1508,13 @@
             "boosted_lte_earfcns_string_array";
 
     /**
+     * Determine whether to use only RSRP for the number of LTE signal bars.
+     * @hide
+     */
+    public static final String KEY_USE_ONLY_RSRP_FOR_LTE_SIGNAL_BAR_BOOL =
+            "use_only_rsrp_for_lte_signal_bar_bool";
+
+    /**
      * Key identifying if voice call barring notification is required to be shown to the user.
      * @hide
      */
@@ -1593,6 +1600,13 @@
     public static final String KEY_SKIP_CF_FAIL_TO_DISABLE_DIALOG_BOOL =
             "skip_cf_fail_to_disable_dialog_bool";
 
+    /**
+     * List of the FAC (feature access codes) to dial as a normal call.
+     * @hide
+     */
+    public static final String KEY_FEATURE_ACCESS_CODES_STRING_ARRAY =
+            "feature_access_codes_string_array";
+
     /** The default value for every variable. */
     private final static PersistableBundle sDefaults;
 
@@ -1855,6 +1869,7 @@
                 null);
         sDefaults.putInt(KEY_LTE_EARFCNS_RSRP_BOOST_INT, 0);
         sDefaults.putStringArray(KEY_BOOSTED_LTE_EARFCNS_STRING_ARRAY, null);
+        sDefaults.putBoolean(KEY_USE_ONLY_RSRP_FOR_LTE_SIGNAL_BAR_BOOL, false);
         sDefaults.putBoolean(KEY_DISABLE_VOICE_BARRING_NOTIFICATION_BOOL, false);
         sDefaults.putInt(IMSI_KEY_EXPIRATION_DAYS_TIME_INT, IMSI_ENCRYPTION_DAYS_TIME_DISABLED);
         sDefaults.putString(IMSI_KEY_DOWNLOAD_URL_STRING, null);
@@ -1864,6 +1879,7 @@
         sDefaults.putStringArray(KEY_ROAMING_OPERATOR_STRING_ARRAY, null);
         sDefaults.putBoolean(KEY_SHOW_IMS_REGISTRATION_STATUS_BOOL, false);
         sDefaults.putBoolean(KEY_DISABLE_CHARGE_INDICATION_BOOL, false);
+        sDefaults.putStringArray(KEY_FEATURE_ACCESS_CODES_STRING_ARRAY, null);
     }
 
     /**
diff --git a/telephony/java/android/telephony/CellIdentityCdma.java b/telephony/java/android/telephony/CellIdentityCdma.java
index b39b4c7..ddc938e 100644
--- a/telephony/java/android/telephony/CellIdentityCdma.java
+++ b/telephony/java/android/telephony/CellIdentityCdma.java
@@ -19,6 +19,7 @@
 import android.os.Parcel;
 import android.os.Parcelable;
 import android.telephony.Rlog;
+import android.text.TextUtils;
 
 import java.util.Objects;
 
@@ -50,6 +51,10 @@
      * to +90 degrees).
      */
     private final int mLatitude;
+    // long alpha Operator Name String or Enhanced Operator Name String
+    private final String mAlphaLong;
+    // short alpha Operator Name String or Enhanced Operator Name String
+    private final String mAlphaShort;
 
     /**
      * @hide
@@ -60,6 +65,8 @@
         mBasestationId = Integer.MAX_VALUE;
         mLongitude = Integer.MAX_VALUE;
         mLatitude = Integer.MAX_VALUE;
+        mAlphaLong = null;
+        mAlphaShort = null;
     }
 
     /**
@@ -75,19 +82,37 @@
      * @hide
      */
     public CellIdentityCdma (int nid, int sid, int bid, int lon, int lat) {
+        this(nid, sid, bid, lon, lat, null, null);
+    }
+
+    /**
+     * public constructor
+     * @param nid Network Id 0..65535
+     * @param sid CDMA System Id 0..32767
+     * @param bid Base Station Id 0..65535
+     * @param lon Longitude is a decimal number ranges from -2592000
+     *        to 2592000
+     * @param lat Latitude is a decimal number ranges from -1296000
+     *        to 1296000
+     * @param alphal long alpha Operator Name String or Enhanced Operator Name String
+     * @param alphas short alpha Operator Name String or Enhanced Operator Name String
+     *
+     * @hide
+     */
+    public CellIdentityCdma (int nid, int sid, int bid, int lon, int lat, String alphal,
+                             String alphas) {
         mNetworkId = nid;
         mSystemId = sid;
         mBasestationId = bid;
         mLongitude = lon;
         mLatitude = lat;
+        mAlphaLong = alphal;
+        mAlphaShort = alphas;
     }
 
     private CellIdentityCdma(CellIdentityCdma cid) {
-        mNetworkId = cid.mNetworkId;
-        mSystemId = cid.mSystemId;
-        mBasestationId = cid.mBasestationId;
-        mLongitude = cid.mLongitude;
-        mLatitude = cid.mLatitude;
+        this(cid.mNetworkId, cid.mSystemId, cid.mBasestationId, cid.mLongitude, cid.mLatitude,
+                cid.mAlphaLong, cid.mAlphaShort);
     }
 
     CellIdentityCdma copy() {
@@ -137,9 +162,26 @@
         return mLatitude;
     }
 
+    /**
+     * @return The long alpha tag associated with the current scan result (may be the operator
+     * name string or extended operator name string). May be null if unknown.
+     */
+    public CharSequence getOperatorAlphaLong() {
+        return mAlphaLong;
+    }
+
+    /**
+     * @return The short alpha tag associated with the current scan result (may be the operator
+     * name string or extended operator name string).  May be null if unknown.
+     */
+    public CharSequence getOperatorAlphaShort() {
+        return mAlphaShort;
+    }
+
     @Override
     public int hashCode() {
-        return Objects.hash(mNetworkId, mSystemId, mBasestationId, mLatitude, mLongitude);
+        return Objects.hash(mNetworkId, mSystemId, mBasestationId, mLatitude, mLongitude,
+                mAlphaLong, mAlphaShort);
     }
 
     @Override
@@ -153,11 +195,14 @@
         }
 
         CellIdentityCdma o = (CellIdentityCdma) other;
+
         return mNetworkId == o.mNetworkId &&
                 mSystemId == o.mSystemId &&
                 mBasestationId == o.mBasestationId &&
                 mLatitude == o.mLatitude &&
-                mLongitude == o.mLongitude;
+                mLongitude == o.mLongitude &&
+                TextUtils.equals(mAlphaLong, o.mAlphaLong) &&
+                TextUtils.equals(mAlphaShort, o.mAlphaShort);
     }
 
     @Override
@@ -168,6 +213,8 @@
         sb.append(" mBasestationId="); sb.append(mBasestationId);
         sb.append(" mLongitude="); sb.append(mLongitude);
         sb.append(" mLatitude="); sb.append(mLatitude);
+        sb.append(" mAlphaLong="); sb.append(mAlphaLong);
+        sb.append(" mAlphaShort="); sb.append(mAlphaShort);
         sb.append("}");
 
         return sb.toString();
@@ -188,15 +235,15 @@
         dest.writeInt(mBasestationId);
         dest.writeInt(mLongitude);
         dest.writeInt(mLatitude);
+        dest.writeString(mAlphaLong);
+        dest.writeString(mAlphaShort);
     }
 
     /** Construct from Parcel, type has already been processed */
     private CellIdentityCdma(Parcel in) {
-        mNetworkId = in.readInt();
-        mSystemId = in.readInt();
-        mBasestationId = in.readInt();
-        mLongitude = in.readInt();
-        mLatitude = in.readInt();
+        this(in.readInt(), in.readInt(), in.readInt(), in.readInt(), in.readInt(),
+                in.readString(), in.readString());
+
         if (DBG) log("CellIdentityCdma(Parcel): " + toString());
     }
 
diff --git a/telephony/java/android/telephony/CellIdentityGsm.java b/telephony/java/android/telephony/CellIdentityGsm.java
index ec008e2..6276626 100644
--- a/telephony/java/android/telephony/CellIdentityGsm.java
+++ b/telephony/java/android/telephony/CellIdentityGsm.java
@@ -19,6 +19,7 @@
 import android.os.Parcel;
 import android.os.Parcelable;
 import android.telephony.Rlog;
+import android.text.TextUtils;
 
 import java.util.Objects;
 
@@ -30,10 +31,6 @@
     private static final String LOG_TAG = "CellIdentityGsm";
     private static final boolean DBG = false;
 
-    // 3-digit Mobile Country Code, 0..999
-    private final int mMcc;
-    // 2 or 3-digit Mobile Network Code, 0..999
-    private final int mMnc;
     // 16-bit Location Area Code, 0..65535
     private final int mLac;
     // 16-bit GSM Cell Identity described in TS 27.007, 0..65535
@@ -42,17 +39,27 @@
     private final int mArfcn;
     // 6-bit Base Station Identity Code
     private final int mBsic;
+    // 3-digit Mobile Country Code in string format
+    private final String mMccStr;
+    // 2 or 3-digit Mobile Network Code in string format
+    private final String mMncStr;
+    // long alpha Operator Name String or Enhanced Operator Name String
+    private final String mAlphaLong;
+    // short alpha Operator Name String or Enhanced Operator Name String
+    private final String mAlphaShort;
 
     /**
      * @hide
      */
     public CellIdentityGsm() {
-        mMcc = Integer.MAX_VALUE;
-        mMnc = Integer.MAX_VALUE;
         mLac = Integer.MAX_VALUE;
         mCid = Integer.MAX_VALUE;
         mArfcn = Integer.MAX_VALUE;
         mBsic = Integer.MAX_VALUE;
+        mMccStr = null;
+        mMncStr = null;
+        mAlphaLong = null;
+        mAlphaShort = null;
     }
     /**
      * public constructor
@@ -64,7 +71,8 @@
      * @hide
      */
     public CellIdentityGsm (int mcc, int mnc, int lac, int cid) {
-        this(mcc, mnc, lac, cid, Integer.MAX_VALUE, Integer.MAX_VALUE);
+        this(lac, cid, Integer.MAX_VALUE, Integer.MAX_VALUE,
+                String.valueOf(mcc), String.valueOf(mnc), null, null);
     }
 
     /**
@@ -79,39 +87,81 @@
      * @hide
      */
     public CellIdentityGsm (int mcc, int mnc, int lac, int cid, int arfcn, int bsic) {
-        mMcc = mcc;
-        mMnc = mnc;
+        this(lac, cid, arfcn, bsic, String.valueOf(mcc), String.valueOf(mnc), null, null);
+    }
+
+    /**
+     * public constructor
+     * @param lac 16-bit Location Area Code, 0..65535
+     * @param cid 16-bit GSM Cell Identity or 28-bit UMTS Cell Identity
+     * @param arfcn 16-bit GSM Absolute RF Channel Number
+     * @param bsic 6-bit Base Station Identity Code
+     * @param mccStr 3-digit Mobile Country Code in string format
+     * @param mncStr 2 or 3-digit Mobile Network Code in string format
+     * @param alphal long alpha Operator Name String or Enhanced Operator Name String
+     * @param alphas short alpha Operator Name String or Enhanced Operator Name String
+     *
+     * @throws IllegalArgumentException if the input MCC is not a 3-digit code or the input MNC is
+     * not a 2 or 3-digit code.
+     *
+     * @hide
+     */
+    public CellIdentityGsm (int lac, int cid, int arfcn, int bsic, String mccStr,
+                            String mncStr, String alphal, String alphas) {
         mLac = lac;
         mCid = cid;
         mArfcn = arfcn;
-        mBsic = bsic;
+        // In RIL BSIC is a UINT8, so 0xFF is the 'INVALID' designator
+        // for inbound parcels
+        mBsic = (bsic == 0xFF) ? Integer.MAX_VALUE : bsic;
+
+        if (mccStr == null || mccStr.matches("^[0-9]{3}$")) {
+            mMccStr = mccStr;
+        } else if (mccStr.isEmpty()) {
+            // If the mccStr parsed from Parcel is empty, set it as null.
+            mMccStr = null;
+        } else {
+            throw new IllegalArgumentException("invalid MCC format");
+        }
+
+        if (mncStr == null || mncStr.matches("^[0-9]{2,3}$")) {
+            mMncStr = mncStr;
+        } else if (mncStr.isEmpty()) {
+            // If the mncStr parsed from Parcel is empty, set it as null.
+            mMncStr = null;
+        } else {
+            throw new IllegalArgumentException("invalid MNC format");
+        }
+
+        mAlphaLong = alphal;
+        mAlphaShort = alphas;
     }
 
     private CellIdentityGsm(CellIdentityGsm cid) {
-        mMcc = cid.mMcc;
-        mMnc = cid.mMnc;
-        mLac = cid.mLac;
-        mCid = cid.mCid;
-        mArfcn = cid.mArfcn;
-        mBsic = cid.mBsic;
+        this(cid.mLac, cid.mCid, cid.mArfcn, cid.mBsic, cid.mMccStr,
+                cid.mMncStr, cid.mAlphaLong, cid.mAlphaShort);
     }
 
     CellIdentityGsm copy() {
-       return new CellIdentityGsm(this);
+        return new CellIdentityGsm(this);
     }
 
     /**
      * @return 3-digit Mobile Country Code, 0..999, Integer.MAX_VALUE if unknown
+     * @deprecated Use {@link #getMccStr} instead.
      */
+    @Deprecated
     public int getMcc() {
-        return mMcc;
+        return (mMccStr != null) ? Integer.valueOf(mMccStr) : Integer.MAX_VALUE;
     }
 
     /**
      * @return 2 or 3-digit Mobile Network Code, 0..999, Integer.MAX_VALUE if unknown
+     * @deprecated Use {@link #getMncStr} instead.
      */
+    @Deprecated
     public int getMnc() {
-        return mMnc;
+        return (mMncStr != null) ? Integer.valueOf(mMncStr) : Integer.MAX_VALUE;
     }
 
     /**
@@ -144,6 +194,43 @@
         return mBsic;
     }
 
+    /**
+     * @return a 5 or 6 character string (MCC+MNC), null if any field is unknown
+     */
+    public String getMobileNetworkOperator() {
+        return (mMncStr == null || mMncStr == null) ? null : mMccStr + mMncStr;
+    }
+
+    /**
+     * @return Mobile Country Code in string format, null if unknown
+     */
+    public String getMccStr() {
+        return mMccStr;
+    }
+
+    /**
+     * @return Mobile Network Code in string format, null if unknown
+     */
+    public String getMncStr() {
+        return mMncStr;
+    }
+
+    /**
+     * @return The long alpha tag associated with the current scan result (may be the operator
+     * name string or extended operator name string). May be null if unknown.
+     */
+    public CharSequence getOperatorAlphaLong() {
+        return mAlphaLong;
+    }
+
+    /**
+     * @return The short alpha tag associated with the current scan result (may be the operator
+     * name string or extended operator name string).  May be null if unknown.
+     */
+    public CharSequence getOperatorAlphaShort() {
+        return mAlphaShort;
+    }
+
 
     /**
      * @return Integer.MAX_VALUE, undefined for GSM
@@ -155,7 +242,7 @@
 
     @Override
     public int hashCode() {
-        return Objects.hash(mMcc, mMnc, mLac, mCid);
+        return Objects.hash(mMccStr, mMncStr, mLac, mCid, mAlphaLong, mAlphaShort);
     }
 
     @Override
@@ -169,23 +256,27 @@
         }
 
         CellIdentityGsm o = (CellIdentityGsm) other;
-        return mMcc == o.mMcc &&
-                mMnc == o.mMnc &&
-                mLac == o.mLac &&
+        return mLac == o.mLac &&
                 mCid == o.mCid &&
                 mArfcn == o.mArfcn &&
-                mBsic == o.mBsic;
+                mBsic == o.mBsic &&
+                TextUtils.equals(mMccStr, o.mMccStr) &&
+                TextUtils.equals(mMncStr, o.mMncStr) &&
+                TextUtils.equals(mAlphaLong, o.mAlphaLong) &&
+                TextUtils.equals(mAlphaShort, o.mAlphaShort);
     }
 
     @Override
     public String toString() {
         StringBuilder sb = new StringBuilder("CellIdentityGsm:{");
-        sb.append(" mMcc=").append(mMcc);
-        sb.append(" mMnc=").append(mMnc);
         sb.append(" mLac=").append(mLac);
         sb.append(" mCid=").append(mCid);
         sb.append(" mArfcn=").append(mArfcn);
         sb.append(" mBsic=").append("0x").append(Integer.toHexString(mBsic));
+        sb.append(" mMcc=").append(mMccStr);
+        sb.append(" mMnc=").append(mMncStr);
+        sb.append(" mAlphaLong=").append(mAlphaLong);
+        sb.append(" mAlphaShort=").append(mAlphaShort);
         sb.append("}");
 
         return sb.toString();
@@ -201,26 +292,20 @@
     @Override
     public void writeToParcel(Parcel dest, int flags) {
         if (DBG) log("writeToParcel(Parcel, int): " + toString());
-        dest.writeInt(mMcc);
-        dest.writeInt(mMnc);
         dest.writeInt(mLac);
         dest.writeInt(mCid);
         dest.writeInt(mArfcn);
         dest.writeInt(mBsic);
+        dest.writeString(mMccStr);
+        dest.writeString(mMncStr);
+        dest.writeString(mAlphaLong);
+        dest.writeString(mAlphaShort);
     }
 
     /** Construct from Parcel, type has already been processed */
     private CellIdentityGsm(Parcel in) {
-        mMcc = in.readInt();
-        mMnc = in.readInt();
-        mLac = in.readInt();
-        mCid = in.readInt();
-        mArfcn = in.readInt();
-        int bsic = in.readInt();
-        // In RIL BSIC is a UINT8, so 0xFF is the 'INVALID' designator
-        // for inbound parcels
-        if (bsic == 0xFF) bsic = Integer.MAX_VALUE;
-        mBsic = bsic;
+        this(in.readInt(), in.readInt(), in.readInt(), in.readInt(), in.readString(),
+                in.readString(), in.readString(), in.readString());
 
         if (DBG) log("CellIdentityGsm(Parcel): " + toString());
     }
@@ -229,16 +314,16 @@
     @SuppressWarnings("hiding")
     public static final Creator<CellIdentityGsm> CREATOR =
             new Creator<CellIdentityGsm>() {
-        @Override
-        public CellIdentityGsm createFromParcel(Parcel in) {
-            return new CellIdentityGsm(in);
-        }
+                @Override
+                public CellIdentityGsm createFromParcel(Parcel in) {
+                    return new CellIdentityGsm(in);
+                }
 
-        @Override
-        public CellIdentityGsm[] newArray(int size) {
-            return new CellIdentityGsm[size];
-        }
-    };
+                @Override
+                public CellIdentityGsm[] newArray(int size) {
+                    return new CellIdentityGsm[size];
+                }
+            };
 
     /**
      * log
@@ -246,4 +331,4 @@
     private static void log(String s) {
         Rlog.w(LOG_TAG, s);
     }
-}
+}
\ No newline at end of file
diff --git a/telephony/java/android/telephony/CellIdentityLte.java b/telephony/java/android/telephony/CellIdentityLte.java
index ce74383..74d2966 100644
--- a/telephony/java/android/telephony/CellIdentityLte.java
+++ b/telephony/java/android/telephony/CellIdentityLte.java
@@ -19,6 +19,7 @@
 import android.os.Parcel;
 import android.os.Parcelable;
 import android.telephony.Rlog;
+import android.text.TextUtils;
 
 import java.util.Objects;
 
@@ -30,10 +31,6 @@
     private static final String LOG_TAG = "CellIdentityLte";
     private static final boolean DBG = false;
 
-    // 3-digit Mobile Country Code, 0..999
-    private final int mMcc;
-    // 2 or 3-digit Mobile Network Code, 0..999
-    private final int mMnc;
     // 28-bit cell identity
     private final int mCi;
     // physical cell id 0..503
@@ -42,17 +39,27 @@
     private final int mTac;
     // 18-bit Absolute RF Channel Number
     private final int mEarfcn;
+    // 3-digit Mobile Country Code in string format
+    private final String mMccStr;
+    // 2 or 3-digit Mobile Network Code in string format
+    private final String mMncStr;
+    // long alpha Operator Name String or Enhanced Operator Name String
+    private final String mAlphaLong;
+    // short alpha Operator Name String or Enhanced Operator Name String
+    private final String mAlphaShort;
 
     /**
      * @hide
      */
     public CellIdentityLte() {
-        mMcc = Integer.MAX_VALUE;
-        mMnc = Integer.MAX_VALUE;
         mCi = Integer.MAX_VALUE;
         mPci = Integer.MAX_VALUE;
         mTac = Integer.MAX_VALUE;
         mEarfcn = Integer.MAX_VALUE;
+        mMccStr = null;
+        mMncStr = null;
+        mAlphaLong = null;
+        mAlphaShort = null;
     }
 
     /**
@@ -66,7 +73,7 @@
      * @hide
      */
     public CellIdentityLte (int mcc, int mnc, int ci, int pci, int tac) {
-        this(mcc, mnc, ci, pci, tac, Integer.MAX_VALUE);
+        this(ci, pci, tac, Integer.MAX_VALUE, String.valueOf(mcc), String.valueOf(mnc), null, null);
     }
 
     /**
@@ -81,21 +88,57 @@
      * @hide
      */
     public CellIdentityLte (int mcc, int mnc, int ci, int pci, int tac, int earfcn) {
-        mMcc = mcc;
-        mMnc = mnc;
+        this(ci, pci, tac, earfcn, String.valueOf(mcc), String.valueOf(mnc), null, null);
+    }
+
+    /**
+     *
+     * @param ci 28-bit Cell Identity
+     * @param pci Physical Cell Id 0..503
+     * @param tac 16-bit Tracking Area Code
+     * @param earfcn 18-bit LTE Absolute RF Channel Number
+     * @param mccStr 3-digit Mobile Country Code in string format
+     * @param mncStr 2 or 3-digit Mobile Network Code in string format
+     * @param alphal long alpha Operator Name String or Enhanced Operator Name String
+     * @param alphas short alpha Operator Name String or Enhanced Operator Name String
+     *
+     * @throws IllegalArgumentException if the input MCC is not a 3-digit code or the input MNC is
+     * not a 2 or 3-digit code.
+     *
+     * @hide
+     */
+    public CellIdentityLte (int ci, int pci, int tac, int earfcn, String mccStr,
+                            String mncStr, String alphal, String alphas) {
         mCi = ci;
         mPci = pci;
         mTac = tac;
         mEarfcn = earfcn;
+
+        if (mccStr == null || mccStr.matches("^[0-9]{3}$")) {
+            mMccStr = mccStr;
+        } else if (mccStr.isEmpty()) {
+            // If the mccStr parsed from Parcel is empty, set it as null.
+            mMccStr = null;
+        } else {
+            throw new IllegalArgumentException("invalid MCC format");
+        }
+
+        if (mncStr == null || mncStr.matches("^[0-9]{2,3}$")) {
+            mMncStr = mncStr;
+        } else if (mncStr.isEmpty()) {
+            // If the mncStr parsed from Parcel is empty, set it as null.
+            mMncStr = null;
+        } else {
+            throw new IllegalArgumentException("invalid MNC format");
+        }
+
+        mAlphaLong = alphal;
+        mAlphaShort = alphas;
     }
 
     private CellIdentityLte(CellIdentityLte cid) {
-        mMcc = cid.mMcc;
-        mMnc = cid.mMnc;
-        mCi = cid.mCi;
-        mPci = cid.mPci;
-        mTac = cid.mTac;
-        mEarfcn = cid.mEarfcn;
+        this(cid.mCi, cid.mPci, cid.mTac, cid.mEarfcn, cid.mMccStr,
+                cid.mMncStr, cid.mAlphaLong, cid.mAlphaShort);
     }
 
     CellIdentityLte copy() {
@@ -104,16 +147,20 @@
 
     /**
      * @return 3-digit Mobile Country Code, 0..999, Integer.MAX_VALUE if unknown
+     * @deprecated Use {@link #getMccStr} instead.
      */
+    @Deprecated
     public int getMcc() {
-        return mMcc;
+        return (mMccStr != null) ? Integer.valueOf(mMccStr) : Integer.MAX_VALUE;
     }
 
     /**
      * @return 2 or 3-digit Mobile Network Code, 0..999, Integer.MAX_VALUE if unknown
+     * @deprecated Use {@link #getMncStr} instead.
      */
+    @Deprecated
     public int getMnc() {
-        return mMnc;
+        return (mMncStr != null) ? Integer.valueOf(mMncStr) : Integer.MAX_VALUE;
     }
 
     /**
@@ -144,9 +191,46 @@
         return mEarfcn;
     }
 
+    /**
+     * @return Mobile Country Code in string format, null if unknown
+     */
+    public String getMccStr() {
+        return mMccStr;
+    }
+
+    /**
+     * @return Mobile Network Code in string format, null if unknown
+     */
+    public String getMncStr() {
+        return mMncStr;
+    }
+
+    /**
+     * @return a 5 or 6 character string (MCC+MNC), null if any field is unknown
+     */
+    public String getMobileNetworkOperator() {
+        return (mMncStr == null || mMncStr == null) ? null : mMccStr + mMncStr;
+    }
+
+    /**
+     * @return The long alpha tag associated with the current scan result (may be the operator
+     * name string or extended operator name string). May be null if unknown.
+     */
+    public CharSequence getOperatorAlphaLong() {
+        return mAlphaLong;
+    }
+
+    /**
+     * @return The short alpha tag associated with the current scan result (may be the operator
+     * name string or extended operator name string).  May be null if unknown.
+     */
+    public CharSequence getOperatorAlphaShort() {
+        return mAlphaShort;
+    }
+
     @Override
     public int hashCode() {
-        return Objects.hash(mMcc, mMnc, mCi, mPci, mTac);
+        return Objects.hash(mMccStr, mMncStr, mCi, mPci, mTac, mAlphaLong, mAlphaShort);
     }
 
     @Override
@@ -160,23 +244,27 @@
         }
 
         CellIdentityLte o = (CellIdentityLte) other;
-        return mMcc == o.mMcc &&
-                mMnc == o.mMnc &&
-                mCi == o.mCi &&
+        return mCi == o.mCi &&
                 mPci == o.mPci &&
                 mTac == o.mTac &&
-                mEarfcn == o.mEarfcn;
+                mEarfcn == o.mEarfcn &&
+                TextUtils.equals(mMccStr, o.mMccStr) &&
+                TextUtils.equals(mMncStr, o.mMncStr) &&
+                TextUtils.equals(mAlphaLong, o.mAlphaLong) &&
+                TextUtils.equals(mAlphaShort, o.mAlphaShort);
     }
 
     @Override
     public String toString() {
         StringBuilder sb = new StringBuilder("CellIdentityLte:{");
-        sb.append(" mMcc="); sb.append(mMcc);
-        sb.append(" mMnc="); sb.append(mMnc);
         sb.append(" mCi="); sb.append(mCi);
         sb.append(" mPci="); sb.append(mPci);
         sb.append(" mTac="); sb.append(mTac);
         sb.append(" mEarfcn="); sb.append(mEarfcn);
+        sb.append(" mMcc="); sb.append(mMccStr);
+        sb.append(" mMnc="); sb.append(mMncStr);
+        sb.append(" mAlphaLong="); sb.append(mAlphaLong);
+        sb.append(" mAlphaShort="); sb.append(mAlphaShort);
         sb.append("}");
 
         return sb.toString();
@@ -192,22 +280,21 @@
     @Override
     public void writeToParcel(Parcel dest, int flags) {
         if (DBG) log("writeToParcel(Parcel, int): " + toString());
-        dest.writeInt(mMcc);
-        dest.writeInt(mMnc);
         dest.writeInt(mCi);
         dest.writeInt(mPci);
         dest.writeInt(mTac);
         dest.writeInt(mEarfcn);
+        dest.writeString(mMccStr);
+        dest.writeString(mMncStr);
+        dest.writeString(mAlphaLong);
+        dest.writeString(mAlphaShort);
     }
 
     /** Construct from Parcel, type has already been processed */
     private CellIdentityLte(Parcel in) {
-        mMcc = in.readInt();
-        mMnc = in.readInt();
-        mCi = in.readInt();
-        mPci = in.readInt();
-        mTac = in.readInt();
-        mEarfcn = in.readInt();
+        this(in.readInt(), in.readInt(), in.readInt(), in.readInt(), in.readString(),
+                in.readString(), in.readString(), in.readString());
+
         if (DBG) log("CellIdentityLte(Parcel): " + toString());
     }
 
@@ -215,16 +302,16 @@
     @SuppressWarnings("hiding")
     public static final Creator<CellIdentityLte> CREATOR =
             new Creator<CellIdentityLte>() {
-        @Override
-        public CellIdentityLte createFromParcel(Parcel in) {
-            return new CellIdentityLte(in);
-        }
+                @Override
+                public CellIdentityLte createFromParcel(Parcel in) {
+                    return new CellIdentityLte(in);
+                }
 
-        @Override
-        public CellIdentityLte[] newArray(int size) {
-            return new CellIdentityLte[size];
-        }
-    };
+                @Override
+                public CellIdentityLte[] newArray(int size) {
+                    return new CellIdentityLte[size];
+                }
+            };
 
     /**
      * log
@@ -232,4 +319,4 @@
     private static void log(String s) {
         Rlog.w(LOG_TAG, s);
     }
-}
+}
\ No newline at end of file
diff --git a/telephony/java/android/telephony/CellIdentityWcdma.java b/telephony/java/android/telephony/CellIdentityWcdma.java
index 0d13efd..51b11aa 100644
--- a/telephony/java/android/telephony/CellIdentityWcdma.java
+++ b/telephony/java/android/telephony/CellIdentityWcdma.java
@@ -19,6 +19,7 @@
 import android.os.Parcel;
 import android.os.Parcelable;
 import android.telephony.Rlog;
+import android.text.TextUtils;
 
 import java.util.Objects;
 
@@ -30,10 +31,6 @@
     private static final String LOG_TAG = "CellIdentityWcdma";
     private static final boolean DBG = false;
 
-    // 3-digit Mobile Country Code, 0..999
-    private final int mMcc;
-    // 2 or 3-digit Mobile Network Code, 0..999
-    private final int mMnc;
     // 16-bit Location Area Code, 0..65535
     private final int mLac;
     // 28-bit UMTS Cell Identity described in TS 25.331, 0..268435455
@@ -42,17 +39,27 @@
     private final int mPsc;
     // 16-bit UMTS Absolute RF Channel Number
     private final int mUarfcn;
+    // 3-digit Mobile Country Code in string format
+    private final String mMccStr;
+    // 2 or 3-digit Mobile Network Code in string format
+    private final String mMncStr;
+    // long alpha Operator Name String or Enhanced Operator Name String
+    private final String mAlphaLong;
+    // short alpha Operator Name String or Enhanced Operator Name String
+    private final String mAlphaShort;
 
     /**
      * @hide
      */
     public CellIdentityWcdma() {
-        mMcc = Integer.MAX_VALUE;
-        mMnc = Integer.MAX_VALUE;
         mLac = Integer.MAX_VALUE;
         mCid = Integer.MAX_VALUE;
         mPsc = Integer.MAX_VALUE;
         mUarfcn = Integer.MAX_VALUE;
+        mMccStr = null;
+        mMncStr = null;
+        mAlphaLong = null;
+        mAlphaShort = null;
     }
     /**
      * public constructor
@@ -65,7 +72,8 @@
      * @hide
      */
     public CellIdentityWcdma (int mcc, int mnc, int lac, int cid, int psc) {
-        this(mcc, mnc, lac, cid, psc, Integer.MAX_VALUE);
+        this(lac, cid, psc, Integer.MAX_VALUE, String.valueOf(mcc), String.valueOf(mnc),
+                null, null);
     }
 
     /**
@@ -80,39 +88,79 @@
      * @hide
      */
     public CellIdentityWcdma (int mcc, int mnc, int lac, int cid, int psc, int uarfcn) {
-        mMcc = mcc;
-        mMnc = mnc;
+        this(lac, cid, psc, uarfcn, String.valueOf(mcc), String.valueOf(mnc), null, null);
+    }
+
+    /**
+     * public constructor
+     * @param lac 16-bit Location Area Code, 0..65535
+     * @param cid 28-bit UMTS Cell Identity
+     * @param psc 9-bit UMTS Primary Scrambling Code
+     * @param uarfcn 16-bit UMTS Absolute RF Channel Number
+     * @param mccStr 3-digit Mobile Country Code in string format
+     * @param mncStr 2 or 3-digit Mobile Network Code in string format
+     * @param alphal long alpha Operator Name String or Enhanced Operator Name String
+     * @param alphas short alpha Operator Name String or Enhanced Operator Name String
+     *
+     * @throws IllegalArgumentException if the input MCC is not a 3-digit code or the input MNC is
+     * not a 2 or 3-digit code.
+     *
+     * @hide
+     */
+    public CellIdentityWcdma (int lac, int cid, int psc, int uarfcn,
+                              String mccStr, String mncStr, String alphal, String alphas) {
         mLac = lac;
         mCid = cid;
         mPsc = psc;
         mUarfcn = uarfcn;
+
+        if (mccStr == null || mccStr.matches("^[0-9]{3}$")) {
+            mMccStr = mccStr;
+        } else if (mccStr.isEmpty()) {
+            // If the mccStr parsed from Parcel is empty, set it as null.
+            mMccStr = null;
+        } else {
+            throw new IllegalArgumentException("invalid MCC format");
+        }
+
+        if (mncStr == null || mncStr.matches("^[0-9]{2,3}$")) {
+            mMncStr = mncStr;
+        } else if (mncStr.isEmpty()) {
+            // If the mncStr parsed from Parcel is empty, set it as null.
+            mMncStr = null;
+        } else {
+            throw new IllegalArgumentException("invalid MNC format");
+        }
+
+        mAlphaLong = alphal;
+        mAlphaShort = alphas;
     }
 
     private CellIdentityWcdma(CellIdentityWcdma cid) {
-        mMcc = cid.mMcc;
-        mMnc = cid.mMnc;
-        mLac = cid.mLac;
-        mCid = cid.mCid;
-        mPsc = cid.mPsc;
-        mUarfcn = cid.mUarfcn;
+        this(cid.mLac, cid.mCid, cid.mPsc, cid.mUarfcn, cid.mMccStr,
+                cid.mMncStr, cid.mAlphaLong, cid.mAlphaShort);
     }
 
     CellIdentityWcdma copy() {
-       return new CellIdentityWcdma(this);
+        return new CellIdentityWcdma(this);
     }
 
     /**
      * @return 3-digit Mobile Country Code, 0..999, Integer.MAX_VALUE if unknown
+     * @deprecated Use {@link #getMccStr} instead.
      */
+    @Deprecated
     public int getMcc() {
-        return mMcc;
+        return (mMccStr != null) ? Integer.valueOf(mMccStr) : Integer.MAX_VALUE;
     }
 
     /**
      * @return 2 or 3-digit Mobile Network Code, 0..999, Integer.MAX_VALUE if unknown
+     * @deprecated Use {@link #getMncStr} instead.
      */
+    @Deprecated
     public int getMnc() {
-        return mMnc;
+        return (mMncStr != null) ? Integer.valueOf(mMncStr) : Integer.MAX_VALUE;
     }
 
     /**
@@ -138,9 +186,46 @@
         return mPsc;
     }
 
+    /**
+     * @return Mobile Country Code in string version, null if unknown
+     */
+    public String getMccStr() {
+        return mMccStr;
+    }
+
+    /**
+     * @return Mobile Network Code in string version, null if unknown
+     */
+    public String getMncStr() {
+        return mMncStr;
+    }
+
+    /**
+     * @return a 5 or 6 character string (MCC+MNC), null if any field is unknown
+     */
+    public String getMobileNetworkOperator() {
+        return (mMncStr == null || mMncStr == null) ? null : mMccStr + mMncStr;
+    }
+
+    /**
+     * @return The long alpha tag associated with the current scan result (may be the operator
+     * name string or extended operator name string). May be null if unknown.
+     */
+    public CharSequence getOperatorAlphaLong() {
+        return mAlphaLong;
+    }
+
+    /**
+     * @return The short alpha tag associated with the current scan result (may be the operator
+     * name string or extended operator name string).  May be null if unknown.
+     */
+    public CharSequence getOperatorAlphaShort() {
+        return mAlphaShort;
+    }
+
     @Override
     public int hashCode() {
-        return Objects.hash(mMcc, mMnc, mLac, mCid, mPsc);
+        return Objects.hash(mMccStr, mMncStr, mLac, mCid, mPsc, mAlphaLong, mAlphaShort);
     }
 
     /**
@@ -161,23 +246,27 @@
         }
 
         CellIdentityWcdma o = (CellIdentityWcdma) other;
-        return mMcc == o.mMcc &&
-                mMnc == o.mMnc &&
-                mLac == o.mLac &&
+        return mLac == o.mLac &&
                 mCid == o.mCid &&
                 mPsc == o.mPsc &&
-                mUarfcn == o.mUarfcn;
+                mUarfcn == o.mUarfcn &&
+                TextUtils.equals(mMccStr, o.mMccStr) &&
+                TextUtils.equals(mMncStr, o.mMncStr) &&
+                TextUtils.equals(mAlphaLong, o.mAlphaLong) &&
+                TextUtils.equals(mAlphaShort, o.mAlphaShort);
     }
 
     @Override
     public String toString() {
         StringBuilder sb = new StringBuilder("CellIdentityWcdma:{");
-        sb.append(" mMcc=").append(mMcc);
-        sb.append(" mMnc=").append(mMnc);
         sb.append(" mLac=").append(mLac);
         sb.append(" mCid=").append(mCid);
         sb.append(" mPsc=").append(mPsc);
         sb.append(" mUarfcn=").append(mUarfcn);
+        sb.append(" mMcc=").append(mMccStr);
+        sb.append(" mMnc=").append(mMncStr);
+        sb.append(" mAlphaLong=").append(mAlphaLong);
+        sb.append(" mAlphaShort=").append(mAlphaShort);
         sb.append("}");
 
         return sb.toString();
@@ -193,22 +282,21 @@
     @Override
     public void writeToParcel(Parcel dest, int flags) {
         if (DBG) log("writeToParcel(Parcel, int): " + toString());
-        dest.writeInt(mMcc);
-        dest.writeInt(mMnc);
         dest.writeInt(mLac);
         dest.writeInt(mCid);
         dest.writeInt(mPsc);
         dest.writeInt(mUarfcn);
+        dest.writeString(mMccStr);
+        dest.writeString(mMncStr);
+        dest.writeString(mAlphaLong);
+        dest.writeString(mAlphaShort);
     }
 
     /** Construct from Parcel, type has already been processed */
     private CellIdentityWcdma(Parcel in) {
-        mMcc = in.readInt();
-        mMnc = in.readInt();
-        mLac = in.readInt();
-        mCid = in.readInt();
-        mPsc = in.readInt();
-        mUarfcn = in.readInt();
+        this(in.readInt(), in.readInt(), in.readInt(), in.readInt(), in.readString(),
+                in.readString(), in.readString(), in.readString());
+
         if (DBG) log("CellIdentityWcdma(Parcel): " + toString());
     }
 
@@ -216,16 +304,16 @@
     @SuppressWarnings("hiding")
     public static final Creator<CellIdentityWcdma> CREATOR =
             new Creator<CellIdentityWcdma>() {
-        @Override
-        public CellIdentityWcdma createFromParcel(Parcel in) {
-            return new CellIdentityWcdma(in);
-        }
+                @Override
+                public CellIdentityWcdma createFromParcel(Parcel in) {
+                    return new CellIdentityWcdma(in);
+                }
 
-        @Override
-        public CellIdentityWcdma[] newArray(int size) {
-            return new CellIdentityWcdma[size];
-        }
-    };
+                @Override
+                public CellIdentityWcdma[] newArray(int size) {
+                    return new CellIdentityWcdma[size];
+                }
+            };
 
     /**
      * log
@@ -233,4 +321,4 @@
     private static void log(String s) {
         Rlog.w(LOG_TAG, s);
     }
-}
+}
\ No newline at end of file
diff --git a/telephony/java/android/telephony/DisconnectCause.java b/telephony/java/android/telephony/DisconnectCause.java
index 98fb653..c3a2ceb 100644
--- a/telephony/java/android/telephony/DisconnectCause.java
+++ b/telephony/java/android/telephony/DisconnectCause.java
@@ -273,6 +273,13 @@
      * {@hide}
      */
     public static final int EMERGENCY_PERM_FAILURE = 64;
+
+    /**
+     * This cause is used to report a normal event only when no other cause in the normal class
+     * applies.
+     * {@hide}
+     */
+    public static final int NORMAL_UNSPECIFIED = 65;
     //*********************************************************************************************
     // When adding a disconnect type:
     // 1) Update toString() with the newly added disconnect type.
@@ -413,6 +420,8 @@
             return "EMERGENCY_TEMP_FAILURE";
         case EMERGENCY_PERM_FAILURE:
             return "EMERGENCY_PERM_FAILURE";
+        case NORMAL_UNSPECIFIED:
+            return "NORMAL_UNSPECIFIED";
         default:
             return "INVALID: " + cause;
         }
diff --git a/telephony/java/android/telephony/MbmsDownloadSession.java b/telephony/java/android/telephony/MbmsDownloadSession.java
index 9a9877a..f392570 100644
--- a/telephony/java/android/telephony/MbmsDownloadSession.java
+++ b/telephony/java/android/telephony/MbmsDownloadSession.java
@@ -21,6 +21,7 @@
 import android.annotation.Nullable;
 import android.annotation.SdkConstant;
 import android.annotation.SystemApi;
+import android.annotation.TestApi;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
@@ -74,6 +75,14 @@
             "android.telephony.action.EmbmsDownload";
 
     /**
+     * Metadata key that specifies the component name of the service to bind to for file-download.
+     * @hide
+     */
+    @TestApi
+    public static final String MBMS_DOWNLOAD_SERVICE_OVERRIDE_METADATA =
+            "mbms-download-service-override";
+
+    /**
      * Integer extra that Android will attach to the intent supplied via
      * {@link android.telephony.mbms.DownloadRequest.Builder#setAppIntent(Intent)}
      * Indicates the result code of the download. One of
diff --git a/telephony/java/android/telephony/MbmsStreamingSession.java b/telephony/java/android/telephony/MbmsStreamingSession.java
index a8c4607..fb2ff7b 100644
--- a/telephony/java/android/telephony/MbmsStreamingSession.java
+++ b/telephony/java/android/telephony/MbmsStreamingSession.java
@@ -20,6 +20,7 @@
 import android.annotation.Nullable;
 import android.annotation.SdkConstant;
 import android.annotation.SystemApi;
+import android.annotation.TestApi;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.ServiceConnection;
@@ -62,6 +63,14 @@
     public static final String MBMS_STREAMING_SERVICE_ACTION =
             "android.telephony.action.EmbmsStreaming";
 
+    /**
+     * Metadata key that specifies the component name of the service to bind to for file-download.
+     * @hide
+     */
+    @TestApi
+    public static final String MBMS_STREAMING_SERVICE_OVERRIDE_METADATA =
+            "mbms-streaming-service-override";
+
     private static AtomicBoolean sIsInitialized = new AtomicBoolean(false);
 
     private AtomicReference<IMbmsStreamingService> mService = new AtomicReference<>(null);
diff --git a/telephony/java/android/telephony/SignalStrength.java b/telephony/java/android/telephony/SignalStrength.java
index c8b4776..de02de7 100644
--- a/telephony/java/android/telephony/SignalStrength.java
+++ b/telephony/java/android/telephony/SignalStrength.java
@@ -68,6 +68,7 @@
     private int mTdScdmaRscp;
 
     private boolean isGsm; // This value is set by the ServiceStateTracker onSignalStrengthResult
+    private boolean mUseOnlyRsrpForLteLevel; // Use only RSRP for the number of LTE signal bar.
 
     /**
      * Create a new SignalStrength from a intent notifier Bundle
@@ -108,6 +109,7 @@
         mLteRsrpBoost = 0;
         mTdScdmaRscp = INVALID;
         isGsm = true;
+        mUseOnlyRsrpForLteLevel = false;
     }
 
     /**
@@ -134,6 +136,7 @@
         mLteRsrpBoost = 0;
         mTdScdmaRscp = INVALID;
         isGsm = gsmFlag;
+        mUseOnlyRsrpForLteLevel = false;
     }
 
     /**
@@ -145,10 +148,10 @@
             int cdmaDbm, int cdmaEcio,
             int evdoDbm, int evdoEcio, int evdoSnr,
             int lteSignalStrength, int lteRsrp, int lteRsrq, int lteRssnr, int lteCqi,
-            int lteRsrpBoost, int tdScdmaRscp, boolean gsmFlag) {
+            int lteRsrpBoost, int tdScdmaRscp, boolean gsmFlag, boolean lteLevelBaseOnRsrp) {
         initialize(gsmSignalStrength, gsmBitErrorRate, cdmaDbm, cdmaEcio,
                 evdoDbm, evdoEcio, evdoSnr, lteSignalStrength, lteRsrp,
-                lteRsrq, lteRssnr, lteCqi, lteRsrpBoost, gsmFlag);
+                lteRsrq, lteRssnr, lteCqi, lteRsrpBoost, gsmFlag, lteLevelBaseOnRsrp);
         mTdScdmaRscp = tdScdmaRscp;
     }
 
@@ -164,7 +167,7 @@
             int tdScdmaRscp, boolean gsmFlag) {
         initialize(gsmSignalStrength, gsmBitErrorRate, cdmaDbm, cdmaEcio,
                 evdoDbm, evdoEcio, evdoSnr, lteSignalStrength, lteRsrp,
-                lteRsrq, lteRssnr, lteCqi, 0, gsmFlag);
+                lteRsrq, lteRssnr, lteCqi, 0, gsmFlag, false);
         mTdScdmaRscp = tdScdmaRscp;
     }
 
@@ -180,7 +183,7 @@
             boolean gsmFlag) {
         initialize(gsmSignalStrength, gsmBitErrorRate, cdmaDbm, cdmaEcio,
                 evdoDbm, evdoEcio, evdoSnr, lteSignalStrength, lteRsrp,
-                lteRsrq, lteRssnr, lteCqi, 0, gsmFlag);
+                lteRsrq, lteRssnr, lteCqi, 0, gsmFlag, false);
     }
 
     /**
@@ -194,7 +197,7 @@
             boolean gsmFlag) {
         initialize(gsmSignalStrength, gsmBitErrorRate, cdmaDbm, cdmaEcio,
                 evdoDbm, evdoEcio, evdoSnr, 99, INVALID,
-                INVALID, INVALID, INVALID, 0, gsmFlag);
+                INVALID, INVALID, INVALID, 0, gsmFlag, false);
     }
 
     /**
@@ -228,7 +231,7 @@
             boolean gsm) {
         initialize(gsmSignalStrength, gsmBitErrorRate, cdmaDbm, cdmaEcio,
                 evdoDbm, evdoEcio, evdoSnr, 99, INVALID,
-                INVALID, INVALID, INVALID, 0, gsm);
+                INVALID, INVALID, INVALID, 0, gsm, false);
     }
 
     /**
@@ -248,6 +251,7 @@
      * @param lteCqi
      * @param lteRsrpBoost
      * @param gsm
+     * @param useOnlyRsrpForLteLevel
      *
      * @hide
      */
@@ -255,7 +259,7 @@
             int cdmaDbm, int cdmaEcio,
             int evdoDbm, int evdoEcio, int evdoSnr,
             int lteSignalStrength, int lteRsrp, int lteRsrq, int lteRssnr, int lteCqi,
-            int lteRsrpBoost, boolean gsm) {
+            int lteRsrpBoost, boolean gsm, boolean useOnlyRsrpForLteLevel) {
         mGsmSignalStrength = gsmSignalStrength;
         mGsmBitErrorRate = gsmBitErrorRate;
         mCdmaDbm = cdmaDbm;
@@ -271,6 +275,7 @@
         mLteRsrpBoost = lteRsrpBoost;
         mTdScdmaRscp = INVALID;
         isGsm = gsm;
+        mUseOnlyRsrpForLteLevel = useOnlyRsrpForLteLevel;
         if (DBG) log("initialize: " + toString());
     }
 
@@ -293,6 +298,7 @@
         mLteRsrpBoost = s.mLteRsrpBoost;
         mTdScdmaRscp = s.mTdScdmaRscp;
         isGsm = s.isGsm;
+        mUseOnlyRsrpForLteLevel = s.mUseOnlyRsrpForLteLevel;
     }
 
     /**
@@ -318,6 +324,7 @@
         mLteRsrpBoost = in.readInt();
         mTdScdmaRscp = in.readInt();
         isGsm = (in.readInt() != 0);
+        mUseOnlyRsrpForLteLevel = (in.readInt() != 0);
     }
 
     /**
@@ -366,6 +373,7 @@
         out.writeInt(mLteRsrpBoost);
         out.writeInt(mTdScdmaRscp);
         out.writeInt(isGsm ? 1 : 0);
+        out.writeInt(mUseOnlyRsrpForLteLevel ? 1 : 0);
     }
 
     /**
@@ -449,6 +457,17 @@
     }
 
     /**
+     * @param useOnlyRsrpForLteLevel true if it uses only RSRP for the number of LTE signal bar,
+     * otherwise false.
+     *
+     * Used by phone to use only RSRP or not for the number of LTE signal bar.
+     * @hide
+     */
+    public void setUseOnlyRsrpForLteLevel(boolean useOnlyRsrpForLteLevel) {
+        mUseOnlyRsrpForLteLevel = useOnlyRsrpForLteLevel;
+    }
+
+    /**
      * @param lteRsrpBoost - signal strength offset
      *
      * Used by phone to set the lte signal strength offset which will be
@@ -835,6 +854,13 @@
             }
         }
 
+        if (useOnlyRsrpForLteLevel()) {
+            log("getLTELevel - rsrp = " + rsrpIconLevel);
+            if (rsrpIconLevel != -1) {
+                return rsrpIconLevel;
+            }
+        }
+
         /*
          * Values are -200 dB to +300 (SNR*10dB) RS_SNR >= 13.0 dB =>4 bars 4.5
          * dB <= RS_SNR < 13.0 dB => 3 bars 1.0 dB <= RS_SNR < 4.5 dB => 2 bars
@@ -915,6 +941,15 @@
     }
 
     /**
+     * @return true if it uses only RSRP for the number of LTE signal bar, otherwise false.
+     *
+     * @hide
+     */
+    public boolean useOnlyRsrpForLteLevel() {
+        return this.mUseOnlyRsrpForLteLevel;
+    }
+
+    /**
      * @return get TD_SCDMA dbm
      *
      * @hide
@@ -974,7 +1009,8 @@
                 + (mEvdoDbm * primeNum) + (mEvdoEcio * primeNum) + (mEvdoSnr * primeNum)
                 + (mLteSignalStrength * primeNum) + (mLteRsrp * primeNum)
                 + (mLteRsrq * primeNum) + (mLteRssnr * primeNum) + (mLteCqi * primeNum)
-                + (mLteRsrpBoost * primeNum) + (mTdScdmaRscp * primeNum) + (isGsm ? 1 : 0));
+                + (mLteRsrpBoost * primeNum) + (mTdScdmaRscp * primeNum) + (isGsm ? 1 : 0)
+                + (mUseOnlyRsrpForLteLevel ? 1 : 0));
     }
 
     /**
@@ -1008,7 +1044,8 @@
                 && mLteCqi == s.mLteCqi
                 && mLteRsrpBoost == s.mLteRsrpBoost
                 && mTdScdmaRscp == s.mTdScdmaRscp
-                && isGsm == s.isGsm);
+                && isGsm == s.isGsm
+                && mUseOnlyRsrpForLteLevel == s.mUseOnlyRsrpForLteLevel);
     }
 
     /**
@@ -1031,7 +1068,9 @@
                 + " " + mLteCqi
                 + " " + mLteRsrpBoost
                 + " " + mTdScdmaRscp
-                + " " + (isGsm ? "gsm|lte" : "cdma"));
+                + " " + (isGsm ? "gsm|lte" : "cdma")
+                + " " + (mUseOnlyRsrpForLteLevel ? "use_only_rsrp_for_lte_level" :
+                         "use_rsrp_and_rssnr_for_lte_level"));
     }
 
     /** Returns the signal strength related to GSM. */
@@ -1086,6 +1125,7 @@
         mLteRsrpBoost = m.getInt("lteRsrpBoost");
         mTdScdmaRscp = m.getInt("TdScdma");
         isGsm = m.getBoolean("isGsm");
+        mUseOnlyRsrpForLteLevel = m.getBoolean("useOnlyRsrpForLteLevel");
     }
 
     /**
@@ -1110,6 +1150,7 @@
         m.putInt("lteRsrpBoost", mLteRsrpBoost);
         m.putInt("TdScdma", mTdScdmaRscp);
         m.putBoolean("isGsm", isGsm);
+        m.putBoolean("useOnlyRsrpForLteLevel", mUseOnlyRsrpForLteLevel);
     }
 
     /**
diff --git a/telephony/java/android/telephony/SmsManager.java b/telephony/java/android/telephony/SmsManager.java
index 6029995..31ee315 100644
--- a/telephony/java/android/telephony/SmsManager.java
+++ b/telephony/java/android/telephony/SmsManager.java
@@ -387,6 +387,112 @@
     }
 
     /**
+     * Send a text based SMS with messaging options.
+     *
+     * @param destinationAddress the address to send the message to
+     * @param scAddress is the service center address or null to use
+     *  the current default SMSC
+     * @param text the body of the message to send
+     * @param sentIntent if not NULL this <code>PendingIntent</code> is
+     *  broadcast when the message is successfully sent, or failed.
+     *  The result code will be <code>Activity.RESULT_OK</code> for success,
+     *  or one of these errors:<br>
+     *  <code>RESULT_ERROR_GENERIC_FAILURE</code><br>
+     *  <code>RESULT_ERROR_RADIO_OFF</code><br>
+     *  <code>RESULT_ERROR_NULL_PDU</code><br>
+     *  For <code>RESULT_ERROR_GENERIC_FAILURE</code> the sentIntent may include
+     *  the extra "errorCode" containing a radio technology specific value,
+     *  generally only useful for troubleshooting.<br>
+     *  The per-application based SMS control checks sentIntent. If sentIntent
+     *  is NULL the caller will be checked against all unknown applications,
+     *  which cause smaller number of SMS to be sent in checking period.
+     * @param deliveryIntent if not NULL this <code>PendingIntent</code> is
+     *  broadcast when the message is delivered to the recipient.  The
+     *  raw pdu of the status report is in the extended data ("pdu").
+     * @param priority Priority level of the message
+     *  Refer specification See 3GPP2 C.S0015-B, v2.0, table 4.5.9-1
+     *  ---------------------------------
+     *  PRIORITY      | Level of Priority
+     *  ---------------------------------
+     *      '00'      |     Normal
+     *      '01'      |     Interactive
+     *      '10'      |     Urgent
+     *      '11'      |     Emergency
+     *  ----------------------------------
+     *  Any Other values included Negative considered as Invalid Priority Indicator of the message.
+     * @param expectMore is a boolean to indicate the sending messages through same link or not.
+     * @param validityPeriod Validity Period of the message in mins.
+     *  Refer specification 3GPP TS 23.040 V6.8.1 section 9.2.3.12.1.
+     *  Validity Period(Minimum) -> 5 mins
+     *  Validity Period(Maximum) -> 635040 mins(i.e.63 weeks).
+     *  Any Other values included Negative considered as Invalid Validity Period of the message.
+     *
+     * @throws IllegalArgumentException if destinationAddress or text are empty
+     * {@hide}
+     */
+    public void sendTextMessage(
+            String destinationAddress, String scAddress, String text,
+            PendingIntent sentIntent, PendingIntent deliveryIntent,
+            int priority, boolean expectMore, int validityPeriod) {
+        sendTextMessageInternal(destinationAddress, scAddress, text, sentIntent, deliveryIntent,
+                true /* persistMessage*/, priority, expectMore, validityPeriod);
+    }
+
+    private void sendTextMessageInternal(
+            String destinationAddress, String scAddress, String text,
+            PendingIntent sentIntent, PendingIntent deliveryIntent, boolean persistMessage,
+            int priority, boolean expectMore, int validityPeriod) {
+        if (TextUtils.isEmpty(destinationAddress)) {
+            throw new IllegalArgumentException("Invalid destinationAddress");
+        }
+
+        if (TextUtils.isEmpty(text)) {
+            throw new IllegalArgumentException("Invalid message body");
+        }
+
+        if (priority < 0x00 || priority > 0x03) {
+            throw new IllegalArgumentException("Invalid priority");
+        }
+
+        if (validityPeriod < 0x05 || validityPeriod > 0x09b0a0) {
+            throw new IllegalArgumentException("Invalid validity period");
+        }
+
+        try {
+             ISms iccISms = getISmsServiceOrThrow();
+            if (iccISms != null) {
+                iccISms.sendTextForSubscriberWithOptions(getSubscriptionId(),
+                        ActivityThread.currentPackageName(), destinationAddress, scAddress, text,
+                        sentIntent, deliveryIntent, persistMessage,  priority, expectMore,
+                        validityPeriod);
+            }
+        } catch (RemoteException ex) {
+            // ignore it
+        }
+    }
+
+    /**
+     * Send a text based SMS without writing it into the SMS Provider.
+     *
+     * <p>Requires Permission:
+     * {@link android.Manifest.permission#MODIFY_PHONE_STATE} or the calling app has carrier
+     * privileges.
+     * </p>
+     *
+     * @see #sendTextMessage(String, String, String, PendingIntent,
+     * PendingIntent, int, boolean, int)
+     * @hide
+     */
+    public void sendTextMessageWithoutPersisting(
+            String destinationAddress, String scAddress, String text,
+            PendingIntent sentIntent, PendingIntent deliveryIntent, int priority,
+            boolean expectMore, int validityPeriod) {
+        sendTextMessageInternal(destinationAddress, scAddress, text, sentIntent, deliveryIntent,
+                false /* persistMessage */, priority, expectMore, validityPeriod);
+    }
+
+    /**
+     *
      * Inject an SMS PDU into the android application framework.
      *
      * <p>Requires permission: {@link android.Manifest.permission#MODIFY_PHONE_STATE} or carrier
@@ -541,6 +647,140 @@
     }
 
     /**
+     * Send a multi-part text based SMS with messaging options. The callee should have already
+     * divided the message into correctly sized parts by calling
+     * <code>divideMessage</code>.
+     *
+     * <p class="note"><strong>Note:</strong> Using this method requires that your app has the
+     * {@link android.Manifest.permission#SEND_SMS} permission.</p>
+     *
+     * <p class="note"><strong>Note:</strong> Beginning with Android 4.4 (API level 19), if
+     * <em>and only if</em> an app is not selected as the default SMS app, the system automatically
+     * writes messages sent using this method to the SMS Provider (the default SMS app is always
+     * responsible for writing its sent messages to the SMS Provider). For information about
+     * how to behave as the default SMS app, see {@link android.provider.Telephony}.</p>
+     *
+     * @param destinationAddress the address to send the message to
+     * @param scAddress is the service center address or null to use
+     *   the current default SMSC
+     * @param parts an <code>ArrayList</code> of strings that, in order,
+     *   comprise the original message
+     * @param sentIntents if not null, an <code>ArrayList</code> of
+     *   <code>PendingIntent</code>s (one for each message part) that is
+     *   broadcast when the corresponding message part has been sent.
+     *   The result code will be <code>Activity.RESULT_OK</code> for success,
+     *   or one of these errors:<br>
+     *   <code>RESULT_ERROR_GENERIC_FAILURE</code><br>
+     *   <code>RESULT_ERROR_RADIO_OFF</code><br>
+     *   <code>RESULT_ERROR_NULL_PDU</code><br>
+     *   For <code>RESULT_ERROR_GENERIC_FAILURE</code> each sentIntent may include
+     *   the extra "errorCode" containing a radio technology specific value,
+     *   generally only useful for troubleshooting.<br>
+     *   The per-application based SMS control checks sentIntent. If sentIntent
+     *   is NULL the caller will be checked against all unknown applications,
+     *   which cause smaller number of SMS to be sent in checking period.
+     * @param deliveryIntents if not null, an <code>ArrayList</code> of
+     *   <code>PendingIntent</code>s (one for each message part) that is
+     *   broadcast when the corresponding message part has been delivered
+     *   to the recipient.  The raw pdu of the status report is in the
+     *   extended data ("pdu").
+     * @param priority Priority level of the message
+     *  Refer specification See 3GPP2 C.S0015-B, v2.0, table 4.5.9-1
+     *  ---------------------------------
+     *  PRIORITY      | Level of Priority
+     *  ---------------------------------
+     *      '00'      |     Normal
+     *      '01'      |     Interactive
+     *      '10'      |     Urgent
+     *      '11'      |     Emergency
+     *  ----------------------------------
+     *  Any Other values included Negative considered as Invalid Priority Indicator of the message.
+     * @param expectMore is a boolean to indicate the sending messages through same link or not.
+     * @param validityPeriod Validity Period of the message in mins.
+     *  Refer specification 3GPP TS 23.040 V6.8.1 section 9.2.3.12.1.
+     *  Validity Period(Minimum) -> 5 mins
+     *  Validity Period(Maximum) -> 635040 mins(i.e.63 weeks).
+     *  Any Other values included Negative considered as Invalid Validity Period of the message.
+     *
+     * @throws IllegalArgumentException if destinationAddress or data are empty
+     * {@hide}
+     */
+    public void sendMultipartTextMessage(
+            String destinationAddress, String scAddress, ArrayList<String> parts,
+            ArrayList<PendingIntent> sentIntents, ArrayList<PendingIntent> deliveryIntents,
+            int priority, boolean expectMore, int validityPeriod) {
+        sendMultipartTextMessageInternal(destinationAddress, scAddress, parts, sentIntents,
+                deliveryIntents, true /* persistMessage*/);
+    }
+
+    private void sendMultipartTextMessageInternal(
+            String destinationAddress, String scAddress, List<String> parts,
+            List<PendingIntent> sentIntents, List<PendingIntent> deliveryIntents,
+            boolean persistMessage, int priority, boolean expectMore, int validityPeriod) {
+        if (TextUtils.isEmpty(destinationAddress)) {
+            throw new IllegalArgumentException("Invalid destinationAddress");
+        }
+        if (parts == null || parts.size() < 1) {
+            throw new IllegalArgumentException("Invalid message body");
+        }
+
+        if (priority < 0x00 || priority > 0x03) {
+            throw new IllegalArgumentException("Invalid priority");
+        }
+
+        if (validityPeriod < 0x05 || validityPeriod > 0x09b0a0) {
+            throw new IllegalArgumentException("Invalid validity period");
+        }
+
+        if (parts.size() > 1) {
+            try {
+                 ISms iccISms = getISmsServiceOrThrow();
+                if (iccISms != null) {
+                    iccISms.sendMultipartTextForSubscriberWithOptions(getSubscriptionId(),
+                            ActivityThread.currentPackageName(), destinationAddress, scAddress,
+                            parts, sentIntents, deliveryIntents, persistMessage, priority,
+                            expectMore, validityPeriod);
+                }
+            } catch (RemoteException ex) {
+                // ignore it
+            }
+        } else {
+            PendingIntent sentIntent = null;
+            PendingIntent deliveryIntent = null;
+            if (sentIntents != null && sentIntents.size() > 0) {
+                sentIntent = sentIntents.get(0);
+            }
+            if (deliveryIntents != null && deliveryIntents.size() > 0) {
+                deliveryIntent = deliveryIntents.get(0);
+            }
+            sendTextMessageInternal(destinationAddress, scAddress, parts.get(0),
+                    sentIntent, deliveryIntent, persistMessage, priority, expectMore,
+                    validityPeriod);
+        }
+    }
+
+    /**
+     * Send a multi-part text based SMS without writing it into the SMS Provider.
+     *
+     * <p>Requires Permission:
+     * {@link android.Manifest.permission#MODIFY_PHONE_STATE} or the calling app has carrier
+     * privileges.
+     * </p>
+     *
+     * @see #sendMultipartTextMessage(String, String, ArrayList, ArrayList,
+     * ArrayList, int, boolean, int)
+     * @hide
+     **/
+    public void sendMultipartTextMessageWithoutPersisting(
+            String destinationAddress, String scAddress, List<String> parts,
+            List<PendingIntent> sentIntents, List<PendingIntent> deliveryIntents,
+            int priority, boolean expectMore, int validityPeriod) {
+        sendMultipartTextMessageInternal(destinationAddress, scAddress, parts, sentIntents,
+                deliveryIntents, false /* persistMessage*/, priority, expectMore,
+                validityPeriod);
+    }
+
+   /**
      * Send a data based SMS to a specific application port.
      *
      * <p class="note"><strong>Note:</strong> Using this method requires that your app has the
@@ -1003,7 +1243,7 @@
      *   <code>getAllMessagesFromIcc</code>
      * @return <code>ArrayList</code> of <code>SmsMessage</code> objects.
      */
-    private static ArrayList<SmsMessage> createMessageListFromRawRecords(List<SmsRawData> records) {
+    private ArrayList<SmsMessage> createMessageListFromRawRecords(List<SmsRawData> records) {
         ArrayList<SmsMessage> messages = new ArrayList<SmsMessage>();
         if (records != null) {
             int count = records.size();
@@ -1011,7 +1251,8 @@
                 SmsRawData data = records.get(i);
                 // List contains all records, including "free" records (null)
                 if (data != null) {
-                    SmsMessage sms = SmsMessage.createFromEfRecord(i+1, data.getBytes());
+                    SmsMessage sms = SmsMessage.createFromEfRecord(i+1, data.getBytes(),
+                            getSubscriptionId());
                     if (sms != null) {
                         messages.add(sms);
                     }
diff --git a/telephony/java/android/telephony/SmsMessage.java b/telephony/java/android/telephony/SmsMessage.java
index dcdda86..ec84050 100644
--- a/telephony/java/android/telephony/SmsMessage.java
+++ b/telephony/java/android/telephony/SmsMessage.java
@@ -267,6 +267,31 @@
     }
 
     /**
+     * Create an SmsMessage from an SMS EF record.
+     *
+     * @param index Index of SMS record. This should be index in ArrayList
+     *              returned by SmsManager.getAllMessagesFromSim + 1.
+     * @param data Record data.
+     * @param subId Subscription Id of the SMS
+     * @return An SmsMessage representing the record.
+     *
+     * @hide
+     */
+    public static SmsMessage createFromEfRecord(int index, byte[] data, int subId) {
+        SmsMessageBase wrappedMessage;
+
+        if (isCdmaVoice(subId)) {
+            wrappedMessage = com.android.internal.telephony.cdma.SmsMessage.createFromEfRecord(
+                    index, data);
+        } else {
+            wrappedMessage = com.android.internal.telephony.gsm.SmsMessage.createFromEfRecord(
+                    index, data);
+        }
+
+        return wrappedMessage != null ? new SmsMessage(wrappedMessage) : null;
+    }
+
+    /**
      * Get the TP-Layer-Length for the given SMS-SUBMIT PDU Basically, the
      * length in bytes (not hex chars) less the SMSC header
      *
@@ -818,6 +843,7 @@
          int activePhone = TelephonyManager.getDefault().getCurrentPhoneType(subId);
          return (PHONE_TYPE_CDMA == activePhone);
    }
+
     /**
      * Decide if the carrier supports long SMS.
      * {@hide}
diff --git a/telephony/java/android/telephony/mbms/FileServiceInfo.java b/telephony/java/android/telephony/mbms/FileServiceInfo.java
index d8d7f48..b30a3af 100644
--- a/telephony/java/android/telephony/mbms/FileServiceInfo.java
+++ b/telephony/java/android/telephony/mbms/FileServiceInfo.java
@@ -17,6 +17,7 @@
 package android.telephony.mbms;
 
 import android.annotation.SystemApi;
+import android.annotation.TestApi;
 import android.os.Parcel;
 import android.os.Parcelable;
 
@@ -35,6 +36,7 @@
 
     /** @hide */
     @SystemApi
+    @TestApi
     public FileServiceInfo(Map<Locale, String> newNames, String newClassName,
             List<Locale> newLocales, String newServiceId, Date start, Date end,
             List<FileInfo> newFiles) {
diff --git a/telephony/java/android/telephony/mbms/MbmsUtils.java b/telephony/java/android/telephony/mbms/MbmsUtils.java
index d38d8a7..b4ad1d7 100644
--- a/telephony/java/android/telephony/mbms/MbmsUtils.java
+++ b/telephony/java/android/telephony/mbms/MbmsUtils.java
@@ -22,6 +22,8 @@
 import android.content.ServiceConnection;
 import android.content.pm.*;
 import android.content.pm.ServiceInfo;
+import android.telephony.MbmsDownloadSession;
+import android.telephony.MbmsStreamingSession;
 import android.util.Log;
 
 import java.io.File;
@@ -48,24 +50,64 @@
         return new ComponentName(ci.packageName, ci.name);
     }
 
+    private static ComponentName getOverrideServiceName(Context context, String serviceAction) {
+        String metaDataKey = null;
+        switch (serviceAction) {
+            case MbmsDownloadSession.MBMS_DOWNLOAD_SERVICE_ACTION:
+                metaDataKey = MbmsDownloadSession.MBMS_DOWNLOAD_SERVICE_OVERRIDE_METADATA;
+                break;
+            case MbmsStreamingSession.MBMS_STREAMING_SERVICE_ACTION:
+                metaDataKey = MbmsStreamingSession.MBMS_STREAMING_SERVICE_OVERRIDE_METADATA;
+                break;
+        }
+        if (metaDataKey == null) {
+            return null;
+        }
+
+        ApplicationInfo appInfo;
+        try {
+            appInfo = context.getPackageManager()
+                    .getApplicationInfo(context.getPackageName(), PackageManager.GET_META_DATA);
+        } catch (PackageManager.NameNotFoundException e) {
+            return null;
+        }
+        if (appInfo.metaData == null) {
+            return null;
+        }
+        String serviceComponent = appInfo.metaData.getString(metaDataKey);
+        if (serviceComponent == null) {
+            return null;
+        }
+        return ComponentName.unflattenFromString(serviceComponent);
+    }
+
     public static ServiceInfo getMiddlewareServiceInfo(Context context, String serviceAction) {
         // Query for the proper service
         PackageManager packageManager = context.getPackageManager();
         Intent queryIntent = new Intent();
         queryIntent.setAction(serviceAction);
-        List<ResolveInfo> downloadServices = packageManager.queryIntentServices(queryIntent,
-                PackageManager.MATCH_SYSTEM_ONLY);
 
-        if (downloadServices == null || downloadServices.size() == 0) {
-            Log.w(LOG_TAG, "No download services found, cannot get service info");
+        ComponentName overrideService = getOverrideServiceName(context, serviceAction);
+        List<ResolveInfo> services;
+        if (overrideService == null) {
+            services = packageManager.queryIntentServices(queryIntent,
+                    PackageManager.MATCH_SYSTEM_ONLY);
+        } else {
+            queryIntent.setComponent(overrideService);
+            services = packageManager.queryIntentServices(queryIntent,
+                    PackageManager.MATCH_ALL);
+        }
+
+        if (services == null || services.size() == 0) {
+            Log.w(LOG_TAG, "No MBMS services found, cannot get service info");
             return null;
         }
 
-        if (downloadServices.size() > 1) {
-            Log.w(LOG_TAG, "More than one download service found, cannot get unique service");
+        if (services.size() > 1) {
+            Log.w(LOG_TAG, "More than one MBMS service found, cannot get unique service");
             return null;
         }
-        return downloadServices.get(0).serviceInfo;
+        return services.get(0).serviceInfo;
     }
 
     public static int startBinding(Context context, String serviceAction,
diff --git a/telephony/java/android/telephony/mbms/StreamingServiceInfo.java b/telephony/java/android/telephony/mbms/StreamingServiceInfo.java
index c704f34..ef2a14a 100644
--- a/telephony/java/android/telephony/mbms/StreamingServiceInfo.java
+++ b/telephony/java/android/telephony/mbms/StreamingServiceInfo.java
@@ -17,6 +17,7 @@
 package android.telephony.mbms;
 
 import android.annotation.SystemApi;
+import android.annotation.TestApi;
 import android.os.Parcel;
 import android.os.Parcelable;
 
@@ -41,6 +42,7 @@
      * @hide
      */
     @SystemApi
+    @TestApi
     public StreamingServiceInfo(Map<Locale, String> names, String className,
             List<Locale> locales, String serviceId, Date start, Date end) {
         super(names, className, locales, serviceId, start, end);
diff --git a/telephony/java/android/telephony/mbms/vendor/MbmsDownloadServiceBase.java b/telephony/java/android/telephony/mbms/vendor/MbmsDownloadServiceBase.java
index 9ccdd56..4fee3df 100644
--- a/telephony/java/android/telephony/mbms/vendor/MbmsDownloadServiceBase.java
+++ b/telephony/java/android/telephony/mbms/vendor/MbmsDownloadServiceBase.java
@@ -18,6 +18,7 @@
 
 import android.annotation.NonNull;
 import android.annotation.SystemApi;
+import android.annotation.TestApi;
 import android.content.Intent;
 import android.os.Binder;
 import android.os.IBinder;
@@ -42,6 +43,7 @@
  * @hide
  */
 @SystemApi
+@TestApi
 public class MbmsDownloadServiceBase extends IMbmsDownloadService.Stub {
     private final Map<IBinder, DownloadStateCallback> mDownloadCallbackBinderMap = new HashMap<>();
     private final Map<IBinder, DeathRecipient> mDownloadCallbackDeathRecipients = new HashMap<>();
diff --git a/telephony/java/android/telephony/mbms/vendor/MbmsStreamingServiceBase.java b/telephony/java/android/telephony/mbms/vendor/MbmsStreamingServiceBase.java
index a238153..db177c0 100644
--- a/telephony/java/android/telephony/mbms/vendor/MbmsStreamingServiceBase.java
+++ b/telephony/java/android/telephony/mbms/vendor/MbmsStreamingServiceBase.java
@@ -18,6 +18,7 @@
 
 import android.annotation.Nullable;
 import android.annotation.SystemApi;
+import android.annotation.TestApi;
 import android.content.Intent;
 import android.net.Uri;
 import android.os.Binder;
@@ -38,6 +39,7 @@
  * @hide
  */
 @SystemApi
+@TestApi
 public class MbmsStreamingServiceBase extends IMbmsStreamingService.Stub {
     /**
      * Initialize streaming service for this app and subId, registering the listener.
diff --git a/telephony/java/com/android/ims/ImsConferenceState.java b/telephony/java/com/android/ims/ImsConferenceState.java
index c57ef98..0afde88 100644
--- a/telephony/java/com/android/ims/ImsConferenceState.java
+++ b/telephony/java/com/android/ims/ImsConferenceState.java
@@ -79,6 +79,8 @@
     public static final String STATUS_DISCONNECTED = "disconnected";
     public static final String STATUS_MUTED_VIA_FOCUS = "muted-via-focus";
     public static final String STATUS_CONNECT_FAIL = "connect-fail";
+    public static final String STATUS_SEND_ONLY = "sendonly";
+    public static final String STATUS_SEND_RECV = "sendrecv";
 
     /**
      * conference-info : SIP status code (integer)
@@ -156,15 +158,53 @@
         } else if (status.equals(STATUS_ALERTING) ||
                 status.equals(STATUS_DIALING_OUT)) {
             return Connection.STATE_DIALING;
-        } else if (status.equals(STATUS_ON_HOLD)) {
+        } else if (status.equals(STATUS_ON_HOLD) ||
+                status.equals(STATUS_SEND_ONLY)) {
             return Connection.STATE_HOLDING;
         } else if (status.equals(STATUS_CONNECTED) ||
                 status.equals(STATUS_MUTED_VIA_FOCUS) ||
-                status.equals(STATUS_DISCONNECTING)) {
+                status.equals(STATUS_DISCONNECTING) ||
+                status.equals(STATUS_SEND_RECV)) {
             return Connection.STATE_ACTIVE;
         } else if (status.equals(STATUS_DISCONNECTED)) {
             return Connection.STATE_DISCONNECTED;
         }
         return Call.STATE_ACTIVE;
     }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("[");
+        sb.append(ImsConferenceState.class.getSimpleName());
+        sb.append(" ");
+        if (mParticipants.size() > 0) {
+            Set<Entry<String, Bundle>> entries = mParticipants.entrySet();
+
+            if (entries != null) {
+                Iterator<Entry<String, Bundle>> iterator = entries.iterator();
+                sb.append("<");
+                while (iterator.hasNext()) {
+                    Entry<String, Bundle> entry = iterator.next();
+                    sb.append(entry.getKey());
+                    sb.append(": ");
+                    Bundle participantData = entry.getValue();
+
+                    for (String key : participantData.keySet()) {
+                        sb.append(key);
+                        sb.append("=");
+                        if (ENDPOINT.equals(key) || USER.equals(key)) {
+                            sb.append(android.telecom.Log.pii(participantData.get(key)));
+                        } else {
+                            sb.append(participantData.get(key));
+                        }
+                        sb.append(", ");
+                    }
+                }
+                sb.append(">");
+            }
+        }
+        sb.append("]");
+        return sb.toString();
+    }
 }
diff --git a/telephony/java/com/android/internal/telephony/ISms.aidl b/telephony/java/com/android/internal/telephony/ISms.aidl
index fe37531..a4eb424 100644
--- a/telephony/java/com/android/internal/telephony/ISms.aidl
+++ b/telephony/java/com/android/internal/telephony/ISms.aidl
@@ -187,6 +187,57 @@
             in PendingIntent deliveryIntent, in boolean persistMessage);
 
     /**
+     * Send an SMS with options using Subscription Id.
+     *
+     * @param subId the subId on which the SMS has to be sent.
+     * @param destAddr the address to send the message to
+     * @param scAddr the SMSC to send the message through, or NULL for the
+     *  default SMSC
+     * @param text the body of the message to send
+     * @param sentIntent if not NULL this <code>PendingIntent</code> is
+     *  broadcast when the message is sucessfully sent, or failed.
+     *  The result code will be <code>Activity.RESULT_OK<code> for success,
+     *  or one of these errors:<br>
+     *  <code>RESULT_ERROR_GENERIC_FAILURE</code><br>
+     *  <code>RESULT_ERROR_RADIO_OFF</code><br>
+     *  <code>RESULT_ERROR_NULL_PDU</code><br>
+     *  For <code>RESULT_ERROR_GENERIC_FAILURE</code> the sentIntent may include
+     *  the extra "errorCode" containing a radio technology specific value,
+     *  generally only useful for troubleshooting.<br>
+     *  The per-application based SMS control checks sentIntent. If sentIntent
+     *  is NULL the caller will be checked against all unknown applications,
+     *  which cause smaller number of SMS to be sent in checking period.
+     * @param deliveryIntent if not NULL this <code>PendingIntent</code> is
+     *  broadcast when the message is delivered to the recipient.  The
+     *  raw pdu of the status report is in the extended data ("pdu").
+     * @param persistMessageForNonDefaultSmsApp whether the sent message should
+     *   be automatically persisted in the SMS db. It only affects messages sent
+     *   by a non-default SMS app. Currently only the carrier app can set this
+     *   parameter to false to skip auto message persistence.
+     * @param priority Priority level of the message
+     *  Refer specification See 3GPP2 C.S0015-B, v2.0, table 4.5.9-1
+     *  ---------------------------------
+     *  PRIORITY      | Level of Priority
+     *  ---------------------------------
+     *      '00'      |     Normal
+     *      '01'      |     Interactive
+     *      '10'      |     Urgent
+     *      '11'      |     Emergency
+     *  ----------------------------------
+     *  Any Other values included Negative considered as Invalid Priority Indicator of the message.
+     * @param expectMore is a boolean to indicate the sending message is multi segmented or not.
+     * @param validityPeriod Validity Period of the message in mins.
+     *  Refer specification 3GPP TS 23.040 V6.8.1 section 9.2.3.12.1.
+     *  Validity Period(Minimum) -> 5 mins
+     *  Validity Period(Maximum) -> 635040 mins(i.e.63 weeks).
+     *  Any Other values included Negative considered as Invalid Validity Period of the message.
+     */
+    void sendTextForSubscriberWithOptions(in int subId, String callingPkg, in String destAddr,
+            in String scAddr, in String text, in PendingIntent sentIntent,
+            in PendingIntent deliveryIntent, in boolean persistMessageForNonDefaultSmsApp,
+            in int priority, in boolean expectMore, in int validityPeriod);
+
+    /**
      * Inject an SMS PDU into the android platform.
      *
      * @param subId the subId on which the SMS has to be injected.
@@ -234,6 +285,56 @@
             in List<PendingIntent> deliveryIntents, in boolean persistMessageForNonDefaultSmsApp);
 
     /**
+     * Send a multi-part text based SMS with options using Subscription Id.
+     *
+     * @param subId the subId on which the SMS has to be sent.
+     * @param destinationAddress the address to send the message to
+     * @param scAddress is the service center address or null to use
+     *   the current default SMSC
+     * @param parts an <code>ArrayList</code> of strings that, in order,
+     *   comprise the original message
+     * @param sentIntents if not null, an <code>ArrayList</code> of
+     *   <code>PendingIntent</code>s (one for each message part) that is
+     *   broadcast when the corresponding message part has been sent.
+     *   The result code will be <code>Activity.RESULT_OK<code> for success,
+     *   or one of these errors:
+     *   <code>RESULT_ERROR_GENERIC_FAILURE</code>
+     *   <code>RESULT_ERROR_RADIO_OFF</code>
+     *   <code>RESULT_ERROR_NULL_PDU</code>.
+     * @param deliveryIntents if not null, an <code>ArrayList</code> of
+     *   <code>PendingIntent</code>s (one for each message part) that is
+     *   broadcast when the corresponding message part has been delivered
+     *   to the recipient.  The raw pdu of the status report is in the
+     *   extended data ("pdu").
+     * @param persistMessageForNonDefaultSmsApp whether the sent message should
+     *   be automatically persisted in the SMS db. It only affects messages sent
+     *   by a non-default SMS app. Currently only the carrier app can set this
+     *   parameter to false to skip auto message persistence.
+     * @param priority Priority level of the message
+     *  Refer specification See 3GPP2 C.S0015-B, v2.0, table 4.5.9-1
+     *  ---------------------------------
+     *  PRIORITY      | Level of Priority
+     *  ---------------------------------
+     *      '00'      |     Normal
+     *      '01'      |     Interactive
+     *      '10'      |     Urgent
+     *      '11'      |     Emergency
+     *  ----------------------------------
+     *  Any Other values included Negative considered as Invalid Priority Indicator of the message.
+     * @param expectMore is a boolean to indicate the sending message is multi segmented or not.
+     * @param validityPeriod Validity Period of the message in mins.
+     *  Refer specification 3GPP TS 23.040 V6.8.1 section 9.2.3.12.1.
+     *  Validity Period(Minimum) -> 5 mins
+     *  Validity Period(Maximum) -> 635040 mins(i.e.63 weeks).
+     *  Any Other values included Negative considered as Invalid Validity Period of the message.
+     */
+    void sendMultipartTextForSubscriberWithOptions(in int subId, String callingPkg,
+            in String destinationAddress, in String scAddress, in List<String> parts,
+            in List<PendingIntent> sentIntents, in List<PendingIntent> deliveryIntents,
+            in boolean persistMessageForNonDefaultSmsApp, in int priority, in boolean expectMore,
+            in int validityPeriod);
+
+    /**
      * Enable reception of cell broadcast (SMS-CB) messages with the given
      * message identifier and RAN type. The RAN type specify this message ID
      * belong to 3GPP (GSM) or 3GPP2(CDMA). Note that if two different clients
diff --git a/telephony/java/com/android/internal/telephony/cdma/SmsMessage.java b/telephony/java/com/android/internal/telephony/cdma/SmsMessage.java
index 7a53ef6..14c5f4b 100644
--- a/telephony/java/com/android/internal/telephony/cdma/SmsMessage.java
+++ b/telephony/java/com/android/internal/telephony/cdma/SmsMessage.java
@@ -99,6 +99,15 @@
     private static final int RETURN_NO_ACK  = 0;
     private static final int RETURN_ACK     = 1;
 
+    /**
+     * Supported priority modes for CDMA SMS messages
+     * (See 3GPP2 C.S0015-B, v2.0, table 4.5.9-1)
+     */
+    private static final int PRIORITY_NORMAL        = 0x0;
+    private static final int PRIORITY_INTERACTIVE   = 0x1;
+    private static final int PRIORITY_URGENT        = 0x2;
+    private static final int PRIORITY_EMERGENCY     = 0x3;
+
     private SmsEnvelope mEnvelope;
     private BearerData mBearerData;
 
@@ -211,6 +220,26 @@
      */
     public static SubmitPdu getSubmitPdu(String scAddr, String destAddr, String message,
             boolean statusReportRequested, SmsHeader smsHeader) {
+        return getSubmitPdu(scAddr, destAddr, message, statusReportRequested, smsHeader, -1);
+    }
+
+    /**
+     * Get an SMS-SUBMIT PDU for a destination address and a message
+     *
+     * @param scAddr                Service Centre address.  Null means use default.
+     * @param destAddr              Address of the recipient.
+     * @param message               String representation of the message payload.
+     * @param statusReportRequested Indicates whether a report is requested for this message.
+     * @param smsHeader             Array containing the data for the User Data Header, preceded
+     *                              by the Element Identifiers.
+     * @param priority              Priority level of the message
+     * @return a <code>SubmitPdu</code> containing the encoded SC
+     *         address, if applicable, and the encoded message.
+     *         Returns null on encode error.
+     * @hide
+     */
+    public static SubmitPdu getSubmitPdu(String scAddr, String destAddr, String message,
+            boolean statusReportRequested, SmsHeader smsHeader, int priority) {
 
         /**
          * TODO(cleanup): Do we really want silent failure like this?
@@ -224,7 +253,7 @@
         UserData uData = new UserData();
         uData.payloadStr = message;
         uData.userDataHeader = smsHeader;
-        return privateGetSubmitPdu(destAddr, statusReportRequested, uData);
+        return privateGetSubmitPdu(destAddr, statusReportRequested, uData, priority);
     }
 
     /**
@@ -282,6 +311,22 @@
     }
 
     /**
+     * Get an SMS-SUBMIT PDU for a data message to a destination address &amp; port
+     *
+     * @param destAddr the address of the destination for the message
+     * @param userData the data for the message
+     * @param statusReportRequested Indicates whether a report is requested for this message.
+     * @param priority Priority level of the message
+     * @return a <code>SubmitPdu</code> containing the encoded SC
+     *         address, if applicable, and the encoded message.
+     *         Returns null on encode error.
+     */
+    public static SubmitPdu getSubmitPdu(String destAddr, UserData userData,
+            boolean statusReportRequested, int priority) {
+        return privateGetSubmitPdu(destAddr, statusReportRequested, userData, priority);
+    }
+
+    /**
      * Note: This function is a GSM specific functionality which is not supported in CDMA mode.
      */
     @Override
@@ -764,6 +809,15 @@
      */
     private static SubmitPdu privateGetSubmitPdu(String destAddrStr, boolean statusReportRequested,
             UserData userData) {
+        return privateGetSubmitPdu(destAddrStr, statusReportRequested, userData, -1);
+    }
+
+    /**
+     * Creates BearerData and Envelope from parameters for a Submit SMS.
+     * @return byte stream for SubmitPdu.
+     */
+    private static SubmitPdu privateGetSubmitPdu(String destAddrStr, boolean statusReportRequested,
+            UserData userData, int priority) {
 
         /**
          * TODO(cleanup): give this function a more meaningful name.
@@ -792,6 +846,10 @@
         bearerData.userAckReq = false;
         bearerData.readAckReq = false;
         bearerData.reportReq = false;
+        if (priority >= PRIORITY_NORMAL && priority <= PRIORITY_EMERGENCY) {
+            bearerData.priorityIndicatorSet = true;
+            bearerData.priority = priority;
+        }
 
         bearerData.userData = userData;
 
diff --git a/telephony/java/com/android/internal/telephony/gsm/SmsMessage.java b/telephony/java/com/android/internal/telephony/gsm/SmsMessage.java
index 1ca19e0..4f5bfa9 100644
--- a/telephony/java/com/android/internal/telephony/gsm/SmsMessage.java
+++ b/telephony/java/com/android/internal/telephony/gsm/SmsMessage.java
@@ -89,6 +89,18 @@
 
     private int mVoiceMailCount = 0;
 
+    private static final int VALIDITY_PERIOD_FORMAT_NONE = 0x00;
+    private static final int VALIDITY_PERIOD_FORMAT_ENHANCED = 0x01;
+    private static final int VALIDITY_PERIOD_FORMAT_RELATIVE = 0x02;
+    private static final int VALIDITY_PERIOD_FORMAT_ABSOLUTE = 0x03;
+
+    //Validity Period min - 5 mins
+    private static final int VALIDITY_PERIOD_MIN = 5;
+    //Validity Period max - 63 weeks
+    private static final int VALIDITY_PERIOD_MAX = 635040;
+
+    private static final int INVALID_VALIDITY_PERIOD = -1;
+
     public static class SubmitPdu extends SubmitPduBase {
     }
 
@@ -202,6 +214,45 @@
     }
 
     /**
+     * Get Encoded Relative Validty Period Value from Validity period in mins.
+     *
+     * @param validityPeriod Validity period in mins.
+     *
+     * Refer specification 3GPP TS 23.040 V6.8.1 section 9.2.3.12.1.
+     * ||relValidityPeriod (TP-VP)  ||                 ||  validityPeriod   ||
+     *
+     *      0 to 143                            --->       (TP-VP + 1) x 5 minutes
+     *
+     *      144 to 167                         --->        12 hours + ((TP-VP -143) x 30 minutes)
+     *
+     *      168 to 196                         --->        (TP-VP - 166) x 1 day
+     *
+     *      197 to 255                         --->        (TP-VP - 192) x 1 week
+     *
+     * @return relValidityPeriod Encoded Relative Validity Period Value.
+     * @hide
+     */
+    public static int getRelativeValidityPeriod(int validityPeriod) {
+        int relValidityPeriod = INVALID_VALIDITY_PERIOD;
+
+        if (validityPeriod < VALIDITY_PERIOD_MIN  || validityPeriod > VALIDITY_PERIOD_MAX) {
+            Rlog.e(LOG_TAG,"Invalid Validity Period" + validityPeriod);
+            return relValidityPeriod;
+        }
+
+        if (validityPeriod <= 720) {
+            relValidityPeriod = (validityPeriod  / 5) - 1;
+        } else if (validityPeriod <= 1440) {
+            relValidityPeriod = ((validityPeriod - 720) / 30) + 143;
+        } else if (validityPeriod <= 43200) {
+            relValidityPeriod = (validityPeriod  / 1440) + 166;
+        } else if (validityPeriod <= 635040) {
+            relValidityPeriod = (validityPeriod  / 10080) + 192;
+        }
+        return relValidityPeriod;
+    }
+
+    /**
      * Get an SMS-SUBMIT PDU for a destination address and a message
      *
      * @param scAddress Service Centre address.  Null means use default.
@@ -236,6 +287,29 @@
             String destinationAddress, String message,
             boolean statusReportRequested, byte[] header, int encoding,
             int languageTable, int languageShiftTable) {
+        return getSubmitPdu(scAddress, destinationAddress, message, statusReportRequested,
+            header, encoding, languageTable, languageShiftTable, -1);
+    }
+
+    /**
+     * Get an SMS-SUBMIT PDU for a destination address and a message using the
+     * specified encoding.
+     *
+     * @param scAddress Service Centre address.  Null means use default.
+     * @param encoding Encoding defined by constants in
+     *        com.android.internal.telephony.SmsConstants.ENCODING_*
+     * @param languageTable
+     * @param languageShiftTable
+     * @param validityPeriod Validity Period of the message in Minutes.
+     * @return a <code>SubmitPdu</code> containing the encoded SC
+     *         address, if applicable, and the encoded message.
+     *         Returns null on encode error.
+     * @hide
+     */
+    public static SubmitPdu getSubmitPdu(String scAddress,
+            String destinationAddress, String message,
+            boolean statusReportRequested, byte[] header, int encoding,
+            int languageTable, int languageShiftTable, int validityPeriod) {
 
         // Perform null parameter checks.
         if (message == null || destinationAddress == null) {
@@ -272,8 +346,19 @@
         }
 
         SubmitPdu ret = new SubmitPdu();
-        // MTI = SMS-SUBMIT, UDHI = header != null
-        byte mtiByte = (byte)(0x01 | (header != null ? 0x40 : 0x00));
+
+        int validityPeriodFormat = VALIDITY_PERIOD_FORMAT_NONE;
+        int relativeValidityPeriod = INVALID_VALIDITY_PERIOD;
+
+        // TP-Validity-Period-Format (TP-VPF) in 3GPP TS 23.040 V6.8.1 section 9.2.3.3
+        //bit 4:3 = 10 - TP-VP field present - relative format
+        if((relativeValidityPeriod = getRelativeValidityPeriod(validityPeriod)) >= 0) {
+            validityPeriodFormat = VALIDITY_PERIOD_FORMAT_RELATIVE;
+        }
+
+        byte mtiByte = (byte)(0x01 | (validityPeriodFormat << 0x03) |
+                (header != null ? 0x40 : 0x00));
+
         ByteArrayOutputStream bo = getSubmitPduHead(
                 scAddress, destinationAddress, mtiByte,
                 statusReportRequested, ret);
@@ -338,7 +423,11 @@
             bo.write(0x08);
         }
 
-        // (no TP-Validity-Period)
+        if (validityPeriodFormat == VALIDITY_PERIOD_FORMAT_RELATIVE) {
+            // ( TP-Validity-Period - relative format)
+            bo.write(relativeValidityPeriod);
+        }
+
         bo.write(userData, 0, userData.length);
         ret.encodedMessage = bo.toByteArray();
         return ret;
@@ -388,6 +477,24 @@
     }
 
     /**
+     * Get an SMS-SUBMIT PDU for a destination address and a message
+     *
+     * @param scAddress Service Centre address.  Null means use default.
+     * @param destinationAddress the address of the destination for the message
+     * @param statusReportRequested staus report of the message Requested
+     * @param validityPeriod Validity Period of the message in Minutes.
+     * @return a <code>SubmitPdu</code> containing the encoded SC
+     *         address, if applicable, and the encoded message.
+     *         Returns null on encode error.
+     */
+    public static SubmitPdu getSubmitPdu(String scAddress,
+            String destinationAddress, String message,
+            boolean statusReportRequested, int validityPeriod) {
+        return getSubmitPdu(scAddress, destinationAddress, message, statusReportRequested,
+                null, ENCODING_UNKNOWN, 0, 0, validityPeriod);
+    }
+
+    /**
      * Get an SMS-SUBMIT PDU for a data message to a destination address &amp; port
      *
      * @param scAddress Service Centre address. null == use default
diff --git a/tests/net/java/android/net/util/VersionedBroadcastListenerTest.java b/tests/net/java/android/net/util/VersionedBroadcastListenerTest.java
new file mode 100644
index 0000000..39f59f1
--- /dev/null
+++ b/tests/net/java/android/net/util/VersionedBroadcastListenerTest.java
@@ -0,0 +1,131 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net.util;
+
+import static org.junit.Assert.assertEquals;
+import static org.mockito.Mockito.reset;
+
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.os.Handler;
+import android.os.Looper;
+import android.os.UserHandle;
+
+import android.support.test.filters.SmallTest;
+import android.support.test.runner.AndroidJUnit4;
+
+import com.android.internal.util.test.BroadcastInterceptingContext;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.BeforeClass;
+import org.junit.runner.RunWith;
+import org.junit.Test;
+import org.mockito.Mock;
+import org.mockito.Mockito;
+import org.mockito.MockitoAnnotations;
+
+
+@RunWith(AndroidJUnit4.class)
+@SmallTest
+public class VersionedBroadcastListenerTest {
+    private static final String TAG = VersionedBroadcastListenerTest.class.getSimpleName();
+    private static final String ACTION_TEST = "action.test.happy.broadcasts";
+
+    @Mock private Context mContext;
+    private BroadcastInterceptingContext mServiceContext;
+    private Handler mHandler;
+    private VersionedBroadcastListener mListener;
+    private int mCallbackCount;
+
+    private void doCallback() { mCallbackCount++; }
+
+    private class MockContext extends BroadcastInterceptingContext {
+        MockContext(Context base) {
+            super(base);
+        }
+    }
+
+    @BeforeClass
+    public static void setUpBeforeClass() throws Exception {
+        if (Looper.myLooper() == null) {
+            Looper.prepare();
+        }
+    }
+
+    @Before public void setUp() throws Exception {
+        MockitoAnnotations.initMocks(this);
+        reset(mContext);
+        mServiceContext = new MockContext(mContext);
+        mHandler = new Handler(Looper.myLooper());
+        mCallbackCount = 0;
+        final IntentFilter filter = new IntentFilter();
+        filter.addAction(ACTION_TEST);
+        mListener = new VersionedBroadcastListener(
+                TAG, mServiceContext, mHandler, filter, (Intent intent) -> doCallback());
+    }
+
+    @After public void tearDown() throws Exception {
+        if (mListener != null) {
+            mListener.stopListening();
+            mListener = null;
+        }
+    }
+
+    private void sendBroadcast() {
+        final Intent intent = new Intent(ACTION_TEST);
+        mServiceContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL);
+    }
+
+    @Test
+    public void testBasicListening() {
+        assertEquals(0, mCallbackCount);
+        mListener.startListening();
+        for (int i = 0; i < 5; i++) {
+            sendBroadcast();
+            assertEquals(i+1, mCallbackCount);
+        }
+        mListener.stopListening();
+    }
+
+    @Test
+    public void testBroadcastsBeforeStartAreIgnored() {
+        assertEquals(0, mCallbackCount);
+        for (int i = 0; i < 5; i++) {
+            sendBroadcast();
+            assertEquals(0, mCallbackCount);
+        }
+
+        mListener.startListening();
+        sendBroadcast();
+        assertEquals(1, mCallbackCount);
+    }
+
+    @Test
+    public void testBroadcastsAfterStopAreIgnored() {
+        mListener.startListening();
+        sendBroadcast();
+        assertEquals(1, mCallbackCount);
+        mListener.stopListening();
+
+        for (int i = 0; i < 5; i++) {
+            sendBroadcast();
+            assertEquals(1, mCallbackCount);
+        }
+    }
+}
diff --git a/tests/net/java/com/android/server/ConnectivityServiceTest.java b/tests/net/java/com/android/server/ConnectivityServiceTest.java
index c2cb66d..27a29b6 100644
--- a/tests/net/java/com/android/server/ConnectivityServiceTest.java
+++ b/tests/net/java/com/android/server/ConnectivityServiceTest.java
@@ -104,6 +104,8 @@
 import com.android.internal.util.WakeupMessage;
 import com.android.internal.util.test.BroadcastInterceptingContext;
 import com.android.internal.util.test.FakeSettingsProvider;
+import com.android.server.connectivity.DefaultNetworkMetrics;
+import com.android.server.connectivity.IpConnectivityMetrics;
 import com.android.server.connectivity.MockableSystemProperties;
 import com.android.server.connectivity.NetworkAgentInfo;
 import com.android.server.connectivity.NetworkMonitor;
@@ -156,6 +158,9 @@
     private MockNetworkAgent mEthernetNetworkAgent;
     private Context mContext;
 
+    @Mock IpConnectivityMetrics.Logger mMetricsService;
+    @Mock DefaultNetworkMetrics mDefaultNetworkMetrics;
+
     // This class exists to test bindProcessToNetwork and getBoundNetworkForProcess. These methods
     // do not go through ConnectivityService but talk to netd directly, so they don't automatically
     // reflect the state of our test ConnectivityService.
@@ -805,6 +810,11 @@
             return Context.ETHERNET_SERVICE.equals(name);
         }
 
+        @Override
+        protected IpConnectivityMetrics.Logger metricsLogger() {
+            return mMetricsService;
+        }
+
         public WrappedNetworkMonitor getLastCreatedWrappedNetworkMonitor() {
             return mLastCreatedNetworkMonitor;
         }
@@ -833,6 +843,9 @@
     public void setUp() throws Exception {
         mContext = InstrumentationRegistry.getContext();
 
+        MockitoAnnotations.initMocks(this);
+        when(mMetricsService.defaultNetworkMetrics()).thenReturn(mDefaultNetworkMetrics);
+
         // InstrumentationTestRunner prepares a looper, but AndroidJUnitRunner does not.
         // http://b/25897652 .
         if (Looper.myLooper() == null) {
diff --git a/tests/net/java/com/android/server/IpSecServiceParameterizedTest.java b/tests/net/java/com/android/server/IpSecServiceParameterizedTest.java
index b4b8094..9e97d84b 100644
--- a/tests/net/java/com/android/server/IpSecServiceParameterizedTest.java
+++ b/tests/net/java/com/android/server/IpSecServiceParameterizedTest.java
@@ -206,7 +206,7 @@
                         eq(CRYPT_KEY),
                         anyInt(),
                         eq(""),
-                        isNull(),
+                        eq(new byte[] {}),
                         eq(0),
                         anyInt(),
                         anyInt(),
@@ -227,7 +227,7 @@
                         eq(CRYPT_KEY),
                         anyInt(),
                         eq(""),
-                        isNull(),
+                        eq(new byte[] {}),
                         eq(0),
                         anyInt(),
                         anyInt(),
@@ -256,10 +256,10 @@
                         anyLong(),
                         eq(TEST_SPI_OUT),
                         eq(""),
-                        isNull(),
+                        eq(new byte[] {}),
                         eq(0),
                         eq(""),
-                        isNull(),
+                        eq(new byte[] {}),
                         eq(0),
                         eq(IpSecAlgorithm.AUTH_CRYPT_AES_GCM),
                         eq(CRYPT_KEY),
@@ -277,10 +277,10 @@
                         anyLong(),
                         eq(TEST_SPI_IN),
                         eq(""),
-                        isNull(),
+                        eq(new byte[] {}),
                         eq(0),
                         eq(""),
-                        isNull(),
+                        eq(new byte[] {}),
                         eq(0),
                         eq(IpSecAlgorithm.AUTH_CRYPT_AES_GCM),
                         eq(CRYPT_KEY),
diff --git a/tests/net/java/com/android/server/connectivity/IpConnectivityEventBuilderTest.java b/tests/net/java/com/android/server/connectivity/IpConnectivityEventBuilderTest.java
index 2624176..ad6ebf9 100644
--- a/tests/net/java/com/android/server/connectivity/IpConnectivityEventBuilderTest.java
+++ b/tests/net/java/com/android/server/connectivity/IpConnectivityEventBuilderTest.java
@@ -198,21 +198,20 @@
 
     @Test
     public void testDefaultNetworkEventSerialization() {
-        ConnectivityMetricsEvent ev = describeIpEvent(
-                aType(DefaultNetworkEvent.class),
-                anInt(102),
-                anIntArray(1, 2, 3),
-                anInt(101),
-                aBool(true),
-                aBool(false));
+        DefaultNetworkEvent ev = new DefaultNetworkEvent();
+        ev.netId = 102;
+        ev.prevNetId = 101;
+        ev.transportTypes = new int[]{1, 2, 3};
+        ev.prevIPv4 = true;
+        ev.prevIPv6 = true;
 
         String want = String.join("\n",
                 "dropped_events: 0",
                 "events <",
                 "  if_name: \"\"",
                 "  link_layer: 0",
-                "  network_id: 0",
-                "  time_ms: 1",
+                "  network_id: 102",
+                "  time_ms: 0",
                 "  transports: 0",
                 "  default_network_event <",
                 "    default_network_duration_ms: 0",
@@ -226,7 +225,7 @@
                 "    previous_network_id <",
                 "      network_id: 101",
                 "    >",
-                "    previous_network_ip_support: 1",
+                "    previous_network_ip_support: 3",
                 "    transport_types: 1",
                 "    transport_types: 2",
                 "    transport_types: 3",
@@ -234,7 +233,7 @@
                 ">",
                 "version: 2\n");
 
-        verifySerialization(want, ev);
+        verifySerialization(want, IpConnectivityEventBuilder.toProto(ev));
     }
 
     @Test
diff --git a/tests/net/java/com/android/server/connectivity/IpConnectivityMetricsTest.java b/tests/net/java/com/android/server/connectivity/IpConnectivityMetricsTest.java
index a395c48..6c1decc 100644
--- a/tests/net/java/com/android/server/connectivity/IpConnectivityMetricsTest.java
+++ b/tests/net/java/com/android/server/connectivity/IpConnectivityMetricsTest.java
@@ -18,6 +18,7 @@
 
 import static android.net.metrics.INetdEventListener.EVENT_GETADDRINFO;
 import static android.net.metrics.INetdEventListener.EVENT_GETHOSTBYNAME;
+import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.timeout;
 import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.when;
@@ -30,6 +31,10 @@
 import android.net.ConnectivityManager;
 import android.net.ConnectivityMetricsEvent;
 import android.net.IIpConnectivityMetrics;
+import android.net.IpPrefix;
+import android.net.LinkAddress;
+import android.net.LinkProperties;
+import android.net.RouteInfo;
 import android.net.Network;
 import android.net.NetworkCapabilities;
 import android.net.metrics.ApfProgramEvent;
@@ -41,18 +46,22 @@
 import android.net.metrics.IpReachabilityEvent;
 import android.net.metrics.RaEvent;
 import android.net.metrics.ValidationProbeEvent;
-import android.system.OsConstants;
 import android.os.Parcelable;
 import android.support.test.runner.AndroidJUnit4;
+import android.system.OsConstants;
 import android.test.suitebuilder.annotation.SmallTest;
 import android.util.Base64;
+
+import com.android.internal.util.BitUtils;
 import com.android.server.connectivity.metrics.nano.IpConnectivityLogClass;
+
 import java.io.PrintWriter;
 import java.io.StringWriter;
 import java.util.Collections;
 import java.util.Comparator;
 import java.util.Iterator;
 import java.util.List;
+
 import org.mockito.ArgumentCaptor;
 import org.mockito.Mock;
 import org.mockito.MockitoAnnotations;
@@ -162,6 +171,144 @@
     }
 
     @Test
+    public void testDefaultNetworkEvents() throws Exception {
+        final long cell = BitUtils.packBits(new int[]{NetworkCapabilities.TRANSPORT_CELLULAR});
+        final long wifi = BitUtils.packBits(new int[]{NetworkCapabilities.TRANSPORT_WIFI});
+
+        NetworkAgentInfo[][] defaultNetworks = {
+            // nothing -> cell
+            {null, makeNai(100, 10, false, true, cell)},
+            // cell -> wifi
+            {makeNai(100, 50, true, true, cell), makeNai(101, 20, true, false, wifi)},
+            // wifi -> nothing
+            {makeNai(101, 60, true, false, wifi), null},
+            // nothing -> cell
+            {null, makeNai(102, 10, true, true, cell)},
+            // cell -> wifi
+            {makeNai(102, 50, true, true, cell), makeNai(103, 20, true, false, wifi)},
+        };
+
+        for (NetworkAgentInfo[] pair : defaultNetworks) {
+            mService.mDefaultNetworkMetrics.logDefaultNetworkEvent(pair[1], pair[0]);
+        }
+
+        String want = String.join("\n",
+                "dropped_events: 0",
+                "events <",
+                "  if_name: \"\"",
+                "  link_layer: 0",
+                "  network_id: 100",
+                "  time_ms: 0",
+                "  transports: 0",
+                "  default_network_event <",
+                "    default_network_duration_ms: 0",
+                "    final_score: 0",
+                "    initial_score: 0",
+                "    ip_support: 0",
+                "    network_id <",
+                "      network_id: 100",
+                "    >",
+                "    no_default_network_duration_ms: 0",
+                "    previous_network_id <",
+                "      network_id: 0",
+                "    >",
+                "    previous_network_ip_support: 0",
+                "    transport_types: 0",
+                "  >",
+                ">",
+                "events <",
+                "  if_name: \"\"",
+                "  link_layer: 0",
+                "  network_id: 101",
+                "  time_ms: 0",
+                "  transports: 0",
+                "  default_network_event <",
+                "    default_network_duration_ms: 0",
+                "    final_score: 0",
+                "    initial_score: 0",
+                "    ip_support: 0",
+                "    network_id <",
+                "      network_id: 101",
+                "    >",
+                "    no_default_network_duration_ms: 0",
+                "    previous_network_id <",
+                "      network_id: 100",
+                "    >",
+                "    previous_network_ip_support: 3",
+                "    transport_types: 1",
+                "  >",
+                ">",
+                "events <",
+                "  if_name: \"\"",
+                "  link_layer: 0",
+                "  network_id: 0",
+                "  time_ms: 0",
+                "  transports: 0",
+                "  default_network_event <",
+                "    default_network_duration_ms: 0",
+                "    final_score: 0",
+                "    initial_score: 0",
+                "    ip_support: 0",
+                "    network_id <",
+                "      network_id: 0",
+                "    >",
+                "    no_default_network_duration_ms: 0",
+                "    previous_network_id <",
+                "      network_id: 101",
+                "    >",
+                "    previous_network_ip_support: 1",
+                "  >",
+                ">",
+                "events <",
+                "  if_name: \"\"",
+                "  link_layer: 0",
+                "  network_id: 102",
+                "  time_ms: 0",
+                "  transports: 0",
+                "  default_network_event <",
+                "    default_network_duration_ms: 0",
+                "    final_score: 0",
+                "    initial_score: 0",
+                "    ip_support: 0",
+                "    network_id <",
+                "      network_id: 102",
+                "    >",
+                "    no_default_network_duration_ms: 0",
+                "    previous_network_id <",
+                "      network_id: 0",
+                "    >",
+                "    previous_network_ip_support: 0",
+                "    transport_types: 0",
+                "  >",
+                ">",
+                "events <",
+                "  if_name: \"\"",
+                "  link_layer: 0",
+                "  network_id: 103",
+                "  time_ms: 0",
+                "  transports: 0",
+                "  default_network_event <",
+                "    default_network_duration_ms: 0",
+                "    final_score: 0",
+                "    initial_score: 0",
+                "    ip_support: 0",
+                "    network_id <",
+                "      network_id: 103",
+                "    >",
+                "    no_default_network_duration_ms: 0",
+                "    previous_network_id <",
+                "      network_id: 102",
+                "    >",
+                "    previous_network_ip_support: 3",
+                "    transport_types: 1",
+                "  >",
+                ">",
+                "version: 2\n");
+
+        verifySerialization(want, getdump("flush"));
+    }
+
+    @Test
     public void testEndToEndLogging() throws Exception {
         // TODO: instead of comparing textpb to textpb, parse textpb and compare proto to proto.
         IpConnectivityLog logger = new IpConnectivityLog(mService.impl);
@@ -194,7 +341,6 @@
         Parcelable[] events = {
             new IpReachabilityEvent(IpReachabilityEvent.NUD_FAILED),
             new DhcpClientEvent("SomeState", 192),
-            new DefaultNetworkEvent(102, new int[]{1,2,3}, 101, true, false),
             new IpManagerEvent(IpManagerEvent.PROVISIONING_OK, 5678),
             validationEv,
             apfStats,
@@ -233,6 +379,13 @@
         wakeupEvent("wlan0", 10008);
         wakeupEvent("rmnet0", 1000);
 
+        final long cell = BitUtils.packBits(new int[]{NetworkCapabilities.TRANSPORT_CELLULAR});
+        final long wifi = BitUtils.packBits(new int[]{NetworkCapabilities.TRANSPORT_WIFI});
+        NetworkAgentInfo cellNai = makeNai(100, 50, false, true, cell);
+        NetworkAgentInfo wifiNai = makeNai(101, 60, true, false, wifi);
+        mService.mDefaultNetworkMetrics.logDefaultNetworkEvent(cellNai, null);
+        mService.mDefaultNetworkMetrics.logDefaultNetworkEvent(wifiNai, cellNai);
+
         String want = String.join("\n",
                 "dropped_events: 0",
                 "events <",
@@ -264,30 +417,6 @@
                 "  network_id: 0",
                 "  time_ms: 300",
                 "  transports: 0",
-                "  default_network_event <",
-                "    default_network_duration_ms: 0",
-                "    final_score: 0",
-                "    initial_score: 0",
-                "    ip_support: 0",
-                "    network_id <",
-                "      network_id: 102",
-                "    >",
-                "    no_default_network_duration_ms: 0",
-                "    previous_network_id <",
-                "      network_id: 101",
-                "    >",
-                "    previous_network_ip_support: 1",
-                "    transport_types: 1",
-                "    transport_types: 2",
-                "    transport_types: 3",
-                "  >",
-                ">",
-                "events <",
-                "  if_name: \"\"",
-                "  link_layer: 4",
-                "  network_id: 0",
-                "  time_ms: 400",
-                "  transports: 0",
                 "  ip_provisioning_event <",
                 "    event_type: 1",
                 "    if_name: \"\"",
@@ -298,7 +427,7 @@
                 "  if_name: \"\"",
                 "  link_layer: 4",
                 "  network_id: 0",
-                "  time_ms: 500",
+                "  time_ms: 400",
                 "  transports: 0",
                 "  validation_probe_event <",
                 "    latency_ms: 40730",
@@ -310,7 +439,7 @@
                 "  if_name: \"\"",
                 "  link_layer: 4",
                 "  network_id: 0",
-                "  time_ms: 600",
+                "  time_ms: 500",
                 "  transports: 0",
                 "  apf_statistics <",
                 "    dropped_ras: 2",
@@ -331,7 +460,7 @@
                 "  if_name: \"\"",
                 "  link_layer: 4",
                 "  network_id: 0",
-                "  time_ms: 700",
+                "  time_ms: 600",
                 "  transports: 0",
                 "  ra_event <",
                 "    dnssl_lifetime: -1",
@@ -344,6 +473,50 @@
                 ">",
                 "events <",
                 "  if_name: \"\"",
+                "  link_layer: 0",
+                "  network_id: 100",
+                "  time_ms: 0",
+                "  transports: 0",
+                "  default_network_event <",
+                "    default_network_duration_ms: 0",
+                "    final_score: 0",
+                "    initial_score: 0",
+                "    ip_support: 0",
+                "    network_id <",
+                "      network_id: 100",
+                "    >",
+                "    no_default_network_duration_ms: 0",
+                "    previous_network_id <",
+                "      network_id: 0",
+                "    >",
+                "    previous_network_ip_support: 0",
+                "    transport_types: 0",
+                "  >",
+                ">",
+                "events <",
+                "  if_name: \"\"",
+                "  link_layer: 0",
+                "  network_id: 101",
+                "  time_ms: 0",
+                "  transports: 0",
+                "  default_network_event <",
+                "    default_network_duration_ms: 0",
+                "    final_score: 0",
+                "    initial_score: 0",
+                "    ip_support: 0",
+                "    network_id <",
+                "      network_id: 101",
+                "    >",
+                "    no_default_network_duration_ms: 0",
+                "    previous_network_id <",
+                "      network_id: 100",
+                "    >",
+                "    previous_network_ip_support: 2",
+                "    transport_types: 1",
+                "  >",
+                ">",
+                "events <",
+                "  if_name: \"\"",
                 "  link_layer: 4",
                 "  network_id: 100",
                 "  time_ms: 0",
@@ -471,6 +644,26 @@
         mNetdListener.onWakeupEvent(prefix, uid, uid, 0);
     }
 
+    NetworkAgentInfo makeNai(int netId, int score, boolean ipv4, boolean ipv6, long transports) {
+        NetworkAgentInfo nai = mock(NetworkAgentInfo.class);
+        when(nai.network()).thenReturn(new Network(netId));
+        when(nai.getCurrentScore()).thenReturn(score);
+        nai.linkProperties = new LinkProperties();
+        nai.networkCapabilities = new NetworkCapabilities();
+        for (int t : BitUtils.unpackBits(transports)) {
+            nai.networkCapabilities.addTransportType(t);
+        }
+        if (ipv4) {
+            nai.linkProperties.addLinkAddress(new LinkAddress("192.0.2.12/24"));
+            nai.linkProperties.addRoute(new RouteInfo(new IpPrefix("0.0.0.0/0")));
+        }
+        if (ipv6) {
+            nai.linkProperties.addLinkAddress(new LinkAddress("2001:db8:dead:beef:f00::a0/64"));
+            nai.linkProperties.addRoute(new RouteInfo(new IpPrefix("::/0")));
+        }
+        return nai;
+    }
+
     List<ConnectivityMetricsEvent> verifyEvents(int n, int timeoutMs) throws Exception {
         ArgumentCaptor<ConnectivityMetricsEvent> captor =
                 ArgumentCaptor.forClass(ConnectivityMetricsEvent.class);
diff --git a/tests/net/java/com/android/server/connectivity/tethering/SimChangeListenerTest.java b/tests/net/java/com/android/server/connectivity/tethering/SimChangeListenerTest.java
index b5d333b..f58ea7e 100644
--- a/tests/net/java/com/android/server/connectivity/tethering/SimChangeListenerTest.java
+++ b/tests/net/java/com/android/server/connectivity/tethering/SimChangeListenerTest.java
@@ -48,8 +48,6 @@
 @RunWith(AndroidJUnit4.class)
 @SmallTest
 public class SimChangeListenerTest {
-    private static final int EVENT_UNM_UPDATE = 1;
-
     @Mock private Context mContext;
     private BroadcastInterceptingContext mServiceContext;
     private Handler mHandler;
diff --git a/tools/locked_region_code_injection/Android.bp b/tools/locked_region_code_injection/Android.bp
new file mode 100644
index 0000000..6dd6059
--- /dev/null
+++ b/tools/locked_region_code_injection/Android.bp
@@ -0,0 +1,12 @@
+java_library_host {
+    name: "lockedregioncodeinjection",
+    manifest: "manifest.txt",
+    srcs: ["src/**/*.java"],
+    static_libs: [
+        "asm-6.0",
+        "asm-commons-6.0",
+        "asm-tree-6.0",
+        "asm-analysis-6.0",
+        "guava-21.0",
+    ],
+}
diff --git a/tools/locked_region_code_injection/Android.mk b/tools/locked_region_code_injection/Android.mk
deleted file mode 100644
index 3f65151..0000000
--- a/tools/locked_region_code_injection/Android.mk
+++ /dev/null
@@ -1,15 +0,0 @@
-LOCAL_PATH:= $(call my-dir)
-
-include $(CLEAR_VARS)
-
-LOCAL_JAR_MANIFEST := manifest.txt
-LOCAL_MODULE := lockedregioncodeinjection
-LOCAL_SRC_FILES := $(call all-java-files-under,src)
-LOCAL_STATIC_JAVA_LIBRARIES := \
-    asm-6.0 \
-    asm-commons-6.0 \
-    asm-tree-6.0 \
-    asm-analysis-6.0 \
-    guava-21.0 \
-
-include $(BUILD_HOST_JAVA_LIBRARY)