Merge "Added TaskWindowContainerController"
diff --git a/api/system-current.txt b/api/system-current.txt
index 4c9cada..f2b0eae 100644
--- a/api/system-current.txt
+++ b/api/system-current.txt
@@ -6423,6 +6423,8 @@
     field public static final java.lang.String EXTRA_PROVISIONING_DEVICE_ADMIN_PACKAGE_CHECKSUM = "android.app.extra.PROVISIONING_DEVICE_ADMIN_PACKAGE_CHECKSUM";
     field public static final java.lang.String EXTRA_PROVISIONING_DEVICE_ADMIN_PACKAGE_DOWNLOAD_COOKIE_HEADER = "android.app.extra.PROVISIONING_DEVICE_ADMIN_PACKAGE_DOWNLOAD_COOKIE_HEADER";
     field public static final java.lang.String EXTRA_PROVISIONING_DEVICE_ADMIN_PACKAGE_DOWNLOAD_LOCATION = "android.app.extra.PROVISIONING_DEVICE_ADMIN_PACKAGE_DOWNLOAD_LOCATION";
+    field public static final java.lang.String EXTRA_PROVISIONING_DEVICE_ADMIN_PACKAGE_ICON_URI = "android.app.extra.PROVISIONING_DEVICE_ADMIN_PACKAGE_ICON_URI";
+    field public static final java.lang.String EXTRA_PROVISIONING_DEVICE_ADMIN_PACKAGE_LABEL = "android.app.extra.PROVISIONING_DEVICE_ADMIN_PACKAGE_LABEL";
     field public static final deprecated java.lang.String EXTRA_PROVISIONING_DEVICE_ADMIN_PACKAGE_NAME = "android.app.extra.PROVISIONING_DEVICE_ADMIN_PACKAGE_NAME";
     field public static final java.lang.String EXTRA_PROVISIONING_DEVICE_ADMIN_SIGNATURE_CHECKSUM = "android.app.extra.PROVISIONING_DEVICE_ADMIN_SIGNATURE_CHECKSUM";
     field public static final java.lang.String EXTRA_PROVISIONING_DISCLAIMERS = "android.app.extra.PROVISIONING_DISCLAIMERS";
@@ -6435,8 +6437,10 @@
     field public static final java.lang.String EXTRA_PROVISIONING_LOCAL_TIME = "android.app.extra.PROVISIONING_LOCAL_TIME";
     field public static final java.lang.String EXTRA_PROVISIONING_LOGO_URI = "android.app.extra.PROVISIONING_LOGO_URI";
     field public static final java.lang.String EXTRA_PROVISIONING_MAIN_COLOR = "android.app.extra.PROVISIONING_MAIN_COLOR";
+    field public static final java.lang.String EXTRA_PROVISIONING_ORGANIZATION_NAME = "android.app.extra.PROVISIONING_ORGANIZATION_NAME";
     field public static final java.lang.String EXTRA_PROVISIONING_SKIP_ENCRYPTION = "android.app.extra.PROVISIONING_SKIP_ENCRYPTION";
     field public static final java.lang.String EXTRA_PROVISIONING_SKIP_USER_CONSENT = "android.app.extra.PROVISIONING_SKIP_USER_CONSENT";
+    field public static final java.lang.String EXTRA_PROVISIONING_SUPPORT_URL = "android.app.extra.PROVISIONING_SUPPORT_URL";
     field public static final java.lang.String EXTRA_PROVISIONING_TIME_ZONE = "android.app.extra.PROVISIONING_TIME_ZONE";
     field public static final java.lang.String EXTRA_PROVISIONING_WIFI_HIDDEN = "android.app.extra.PROVISIONING_WIFI_HIDDEN";
     field public static final java.lang.String EXTRA_PROVISIONING_WIFI_PAC_URL = "android.app.extra.PROVISIONING_WIFI_PAC_URL";
diff --git a/core/java/android/app/ITaskStackListener.aidl b/core/java/android/app/ITaskStackListener.aidl
index e454ae1..ef997c9 100644
--- a/core/java/android/app/ITaskStackListener.aidl
+++ b/core/java/android/app/ITaskStackListener.aidl
@@ -95,4 +95,11 @@
      * perform relevant animations before the window disappears.
      */
     void onTaskRemovalStarted(int taskId);
+
+    /**
+     * Called when the task has been put in a locked state because one or more of the
+     * activities inside it belong to a managed profile user, and that user has just
+     * been locked.
+     */
+    void onTaskProfileLocked(int taskId, int userId);
 }
diff --git a/core/java/android/app/TaskStackListener.java b/core/java/android/app/TaskStackListener.java
index 0639552..ad5e69b 100644
--- a/core/java/android/app/TaskStackListener.java
+++ b/core/java/android/app/TaskStackListener.java
@@ -74,4 +74,8 @@
     public void onActivityRequestedOrientationChanged(int taskId, int requestedOrientation)
             throws RemoteException {
     }
+
+    @Override
+    public void onTaskProfileLocked(int taskId, int userId) {
+    }
 }
diff --git a/core/java/android/app/admin/DevicePolicyManager.java b/core/java/android/app/admin/DevicePolicyManager.java
index a56ff5e..29633aa 100644
--- a/core/java/android/app/admin/DevicePolicyManager.java
+++ b/core/java/android/app/admin/DevicePolicyManager.java
@@ -279,6 +279,8 @@
      * <li>{@link #EXTRA_PROVISIONING_DEVICE_ADMIN_PACKAGE_DOWNLOAD_LOCATION}, optional</li>
      * <li>{@link #EXTRA_PROVISIONING_DEVICE_ADMIN_PACKAGE_DOWNLOAD_COOKIE_HEADER}, optional</li>
      * <li>{@link #EXTRA_PROVISIONING_DEVICE_ADMIN_PACKAGE_CHECKSUM}, optional</li>
+     * <li>{@link #EXTRA_PROVISIONING_DEVICE_ADMIN_PACKAGE_LABEL}, optional</li>
+     * <li>{@link #EXTRA_PROVISIONING_DEVICE_ADMIN_PACKAGE_ICON_URI}, optional</li>
      * <li>{@link #EXTRA_PROVISIONING_LOCAL_TIME} (convert to String), optional</li>
      * <li>{@link #EXTRA_PROVISIONING_TIME_ZONE}, optional</li>
      * <li>{@link #EXTRA_PROVISIONING_LOCALE}, optional</li>
@@ -290,6 +292,8 @@
      * <li>{@link #EXTRA_PROVISIONING_WIFI_PROXY_PORT} (convert to String), optional</li>
      * <li>{@link #EXTRA_PROVISIONING_WIFI_PROXY_BYPASS}, optional</li>
      * <li>{@link #EXTRA_PROVISIONING_WIFI_PAC_URL}, optional</li>
+     * <li>{@link #EXTRA_PROVISIONING_SUPPORT_URL}, optional</li>
+     * <li>{@link #EXTRA_PROVISIONING_ORGANIZATION_NAME}, optional</li>
      * <li>{@link #EXTRA_PROVISIONING_ADMIN_EXTRAS_BUNDLE}, optional</li></ul>
      *
      * @hide
@@ -688,6 +692,67 @@
         = "android.app.extra.PROVISIONING_DEVICE_ADMIN_PACKAGE_DOWNLOAD_LOCATION";
 
     /**
+     * A String extra holding the localized name of the organization under management.
+     *
+     * The name is displayed only during provisioning.
+     *
+     * <p>Use in an intent with action {@link #ACTION_PROVISION_MANAGED_DEVICE_FROM_TRUSTED_SOURCE}
+     *
+     * @hide
+     */
+    @SystemApi
+    public static final String EXTRA_PROVISIONING_ORGANIZATION_NAME =
+            "android.app.extra.PROVISIONING_ORGANIZATION_NAME";
+
+    /**
+     * A String extra holding a url to the website of the device's provider. The website can be
+     * opened in a browser during provisioning.
+     *
+     * <p>Use in an intent with action {@link #ACTION_PROVISION_MANAGED_DEVICE_FROM_TRUSTED_SOURCE}
+     *
+     * @hide
+     */
+    @SystemApi
+    public static final String EXTRA_PROVISIONING_SUPPORT_URL =
+            "android.app.extra.PROVISIONING_SUPPORT_URL";
+
+    /**
+     * A String extra holding the localized name of the device admin package. It should be the same
+     * as the app label of the package.
+     *
+     * <p>Use in an intent with action {@link #ACTION_PROVISION_MANAGED_DEVICE_FROM_TRUSTED_SOURCE}
+     *
+     * @hide
+     */
+    @SystemApi
+    public static final String EXTRA_PROVISIONING_DEVICE_ADMIN_PACKAGE_LABEL =
+            "android.app.extra.PROVISIONING_DEVICE_ADMIN_PACKAGE_LABEL";
+
+    /**
+     * A {@link Uri} extra pointing to the app icon of device admin package. This image will be
+     * shown during the provisioning.
+     * <h5>The following URI schemes are accepted:</h5>
+     * <ul>
+     * <li>content ({@link android.content.ContentResolver#SCHEME_CONTENT})</li>
+     * <li>android.resource ({@link android.content.ContentResolver#SCHEME_ANDROID_RESOURCE})</li>
+     * </ul>
+     *
+     * <p> It is the responsibility of the caller to provide an image with a reasonable
+     * pixel density for the device.
+     *
+     * <p> If a content: URI is passed, the intent should have the flag
+     * {@link Intent#FLAG_GRANT_READ_URI_PERMISSION} and the uri should be added to the
+     * {@link android.content.ClipData} of the intent too.
+     *
+     * <p>Use in an intent with action {@link #ACTION_PROVISION_MANAGED_DEVICE_FROM_TRUSTED_SOURCE}
+     *
+     * @hide
+     */
+    @SystemApi
+    public static final String EXTRA_PROVISIONING_DEVICE_ADMIN_PACKAGE_ICON_URI =
+            "android.app.extra.PROVISIONING_DEVICE_ADMIN_PACKAGE_ICON_URI";
+
+    /**
      * An int extra holding a minimum required version code for the device admin package. If the
      * device admin is already installed on the device, it will only be re-downloaded from
      * {@link #EXTRA_PROVISIONING_DEVICE_ADMIN_PACKAGE_DOWNLOAD_LOCATION} if the version of the
@@ -808,7 +873,7 @@
      * </ul>
      *
      * <p> It is the responsibility of the caller to provide an image with a reasonable
-     * pixed density for the device.
+     * pixel density for the device.
      *
      * <p> If a content: URI is passed, the intent should have the flag
      * {@link Intent#FLAG_GRANT_READ_URI_PERMISSION} and the uri should be added to the
diff --git a/core/java/android/appwidget/AppWidgetManager.java b/core/java/android/appwidget/AppWidgetManager.java
index 3189681..31e779f 100644
--- a/core/java/android/appwidget/AppWidgetManager.java
+++ b/core/java/android/appwidget/AppWidgetManager.java
@@ -1094,8 +1094,9 @@
      * <p>Only apps with a foreground activity or a foreground service can call it.  Otherwise
      * it'll throw {@link IllegalStateException}.
      *
-     * <p>When an app calls this API when a previous request is still waiting for a response,
-     * the previous request will be canceled.
+     * <p>It's up to the launcher how to handle previous pending requests when the same package
+     * calls this API multiple times in a row.  It may ignore the previous requests,
+     * for example.
      *
      * @param provider The {@link ComponentName} for the {@link
      *    android.content.BroadcastReceiver BroadcastReceiver} provider for your AppWidget.
diff --git a/core/java/android/content/pm/LauncherApps.java b/core/java/android/content/pm/LauncherApps.java
index 4b5b995..afd7578 100644
--- a/core/java/android/content/pm/LauncherApps.java
+++ b/core/java/android/content/pm/LauncherApps.java
@@ -1200,7 +1200,7 @@
 
         /**
          * Return {@code TRUE} if a request is valid -- i.e. {@link #accept(Bundle)} has not been
-         * called, and it has not been canceled.
+         * called yet.
          */
         public boolean isValid() {
             try {
diff --git a/core/java/android/content/pm/ShortcutManager.java b/core/java/android/content/pm/ShortcutManager.java
index c8fb3d1..3853400 100644
--- a/core/java/android/content/pm/ShortcutManager.java
+++ b/core/java/android/content/pm/ShortcutManager.java
@@ -846,8 +846,9 @@
      * <p>Only apps with a foreground activity or a foreground service can call it.  Otherwise
      * it'll throw {@link IllegalStateException}.
      *
-     * <p>When an app calls this API when a previous request is still waiting for a response,
-     * the previous request will be canceled.
+     * <p>It's up to the launcher how to handle previous pending requests when the same package
+     * calls this API multiple times in a row.  It may ignore the previous requests,
+     * for example.
      *
      * @param shortcut New shortcut to pin.  If an app wants to pin an existing (either dynamic
      *     or manifest) shortcut, then it only needs to have an ID, and other fields don't have to
diff --git a/core/java/android/util/EventLog.java b/core/java/android/util/EventLog.java
index 99f6c2a9..79d16fb 100644
--- a/core/java/android/util/EventLog.java
+++ b/core/java/android/util/EventLog.java
@@ -59,7 +59,7 @@
         private Exception mLastWtf;
 
         // Layout of event log entry received from Android logger.
-        //  see system/core/include/log/logger.h
+        //  see system/core/include/log/log.h
         private static final int LENGTH_OFFSET = 0;
         private static final int HEADER_SIZE_OFFSET = 2;
         private static final int PROCESS_OFFSET = 4;
diff --git a/core/java/android/webkit/WebViewFactory.java b/core/java/android/webkit/WebViewFactory.java
index eb0c44c..d7a49e4 100644
--- a/core/java/android/webkit/WebViewFactory.java
+++ b/core/java/android/webkit/WebViewFactory.java
@@ -59,8 +59,8 @@
 
     // visible for WebViewZygoteInit to look up the class by reflection and call preloadInZygote.
     /** @hide */
-    public static final String CHROMIUM_WEBVIEW_FACTORY =
-            "com.android.webview.chromium.WebViewChromiumFactoryProvider";
+    private static final String CHROMIUM_WEBVIEW_FACTORY =
+            "com.android.webview.chromium.WebViewChromiumFactoryProviderForO";
 
     private static final String CHROMIUM_WEBVIEW_FACTORY_METHOD = "create";
 
@@ -143,6 +143,23 @@
     }
 
     /**
+     * @hide
+     */
+    public static Class<WebViewFactoryProvider> getWebViewProviderClass(  ClassLoader clazzLoader)
+            throws ClassNotFoundException{
+        try {
+            return (Class<WebViewFactoryProvider>) Class.forName(CHROMIUM_WEBVIEW_FACTORY,
+                    true, clazzLoader);
+        } catch (ClassNotFoundException e) {
+            // TODO: This loads the provider which is not built for O, should be removed
+            // before the release.
+            return (Class<WebViewFactoryProvider>) Class.forName(
+                    "com.android.webview.chromium.WebViewChromiumFactoryProvider",
+                    true, clazzLoader);
+        }
+    }
+
+    /**
      * Load the native library for the given package name iff that package
      * name is the same as the one providing the webview.
      */
@@ -366,9 +383,9 @@
 
                 Trace.traceBegin(Trace.TRACE_TAG_WEBVIEW, "Class.forName()");
                 try {
-                    return (Class<WebViewFactoryProvider>) Class.forName(CHROMIUM_WEBVIEW_FACTORY,
-                            true, clazzLoader);
-                } finally {
+                    return getWebViewProviderClass(clazzLoader);
+                }
+                finally {
                     Trace.traceEnd(Trace.TRACE_TAG_WEBVIEW);
                 }
             } catch (ClassNotFoundException e) {
diff --git a/core/java/com/android/internal/logging/LogBuilder.java b/core/java/com/android/internal/logging/LogBuilder.java
index 634d061..8e2e114 100644
--- a/core/java/com/android/internal/logging/LogBuilder.java
+++ b/core/java/com/android/internal/logging/LogBuilder.java
@@ -17,8 +17,9 @@
 
     private SparseArray<Object> entries = new SparseArray();
 
-    public LogBuilder() {}
-
+    public LogBuilder(int mainCategory) {
+        setCategory(mainCategory);
+    }
 
     public LogBuilder setView(View view) {
         entries.put(MetricsEvent.RESERVED_FOR_LOGBUILDER_VIEW, view.getId());
diff --git a/core/java/com/android/internal/os/WebViewZygoteInit.java b/core/java/com/android/internal/os/WebViewZygoteInit.java
index 12d699d..d82a211 100644
--- a/core/java/com/android/internal/os/WebViewZygoteInit.java
+++ b/core/java/com/android/internal/os/WebViewZygoteInit.java
@@ -24,6 +24,7 @@
 import android.text.TextUtils;
 import android.util.Log;
 import android.webkit.WebViewFactory;
+import android.webkit.WebViewFactoryProvider;
 
 import java.io.IOException;
 import java.lang.reflect.InvocationTargetException;
@@ -74,8 +75,8 @@
             // call preloadInZygote() on it to give it the opportunity to preload the native library
             // and perform any other initialisation work that should be shared among the children.
             try {
-                Class providerClass = Class.forName(WebViewFactory.CHROMIUM_WEBVIEW_FACTORY, true,
-                                                    loader);
+                Class<WebViewFactoryProvider> providerClass =
+                        WebViewFactory.getWebViewProviderClass(loader);
                 Object result = providerClass.getMethod("preloadInZygote").invoke(null);
                 if (!((Boolean)result).booleanValue()) {
                     Log.e(TAG, "preloadInZygote returned false");
diff --git a/core/jni/android/graphics/HarfBuzzNGFaceSkia.cpp b/core/jni/android/graphics/HarfBuzzNGFaceSkia.cpp
index aa6348e..dcb7874 100644
--- a/core/jni/android/graphics/HarfBuzzNGFaceSkia.cpp
+++ b/core/jni/android/graphics/HarfBuzzNGFaceSkia.cpp
@@ -33,7 +33,9 @@
 #include "HarfBuzzNGFaceSkia.h"
 
 #include <stdlib.h>
-#include <cutils/log.h>
+
+#include <log/log.h>
+
 #include <SkPaint.h>
 #include <SkPath.h>
 #include <SkPoint.h>
diff --git a/core/jni/android_os_Debug.cpp b/core/jni/android_os_Debug.cpp
index aa4570f..14d7e81 100644
--- a/core/jni/android_os_Debug.cpp
+++ b/core/jni/android_os_Debug.cpp
@@ -16,32 +16,32 @@
 
 #define LOG_TAG "android.os.Debug"
 
+#include <assert.h>
+#include <ctype.h>
+#include <errno.h>
 #include <fcntl.h>
 #include <inttypes.h>
+#include <malloc.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include <unistd.h>
-#include <time.h>
 #include <sys/time.h>
-#include <errno.h>
-#include <assert.h>
-#include <ctype.h>
-#include <malloc.h>
+#include <time.h>
+#include <unistd.h>
 
 #include <iomanip>
 #include <string>
 
-#include "jni.h"
+#include <android-base/stringprintf.h>
+#include <cutils/debugger.h>
+#include <log/log.h>
+#include <utils/misc.h>
+#include <utils/String8.h>
 
-#include "android-base/stringprintf.h"
-#include "cutils/debugger.h"
-#include "cutils/log.h"
 #include "JNIHelp.h"
-#include "memtrack/memtrack.h"
-#include "memunreachable/memunreachable.h"
-#include "utils/misc.h"
-#include "utils/String8.h"
+#include "jni.h"
+#include <memtrack/memtrack.h>
+#include <memunreachable/memunreachable.h>
 
 namespace android
 {
diff --git a/core/jni/android_os_Trace.cpp b/core/jni/android_os_Trace.cpp
index ea893f0..de91f70 100644
--- a/core/jni/android_os_Trace.cpp
+++ b/core/jni/android_os_Trace.cpp
@@ -19,15 +19,14 @@
 
 #include <inttypes.h>
 
+#include <cutils/trace.h>
+#include <utils/String8.h>
+#include <log/log.h>
+
 #include <JNIHelp.h>
 #include <ScopedUtfChars.h>
 #include <ScopedStringChars.h>
 
-#include <utils/String8.h>
-
-#include <cutils/trace.h>
-#include <cutils/log.h>
-
 namespace android {
 
 static void sanitizeString(String8& utf8Chars) {
diff --git a/core/jni/android_util_Binder.cpp b/core/jni/android_util_Binder.cpp
index 5559d48..abcd1e7 100644
--- a/core/jni/android_util_Binder.cpp
+++ b/core/jni/android_util_Binder.cpp
@@ -29,19 +29,19 @@
 #include <sys/types.h>
 #include <unistd.h>
 
-#include <utils/Atomic.h>
 #include <binder/IInterface.h>
+#include <binder/IServiceManager.h>
 #include <binder/IPCThreadState.h>
-#include <utils/Log.h>
-#include <utils/SystemClock.h>
-#include <utils/List.h>
-#include <utils/KeyedVector.h>
-#include <log/logger.h>
 #include <binder/Parcel.h>
 #include <binder/ProcessState.h>
-#include <binder/IServiceManager.h>
-#include <utils/threads.h>
+#include <log/log.h>
+#include <utils/Atomic.h>
+#include <utils/KeyedVector.h>
+#include <utils/List.h>
+#include <utils/Log.h>
 #include <utils/String8.h>
+#include <utils/SystemClock.h>
+#include <utils/threads.h>
 
 #include <ScopedUtfChars.h>
 #include <ScopedLocalRef.h>
diff --git a/core/jni/android_util_Log.cpp b/core/jni/android_util_Log.cpp
index 7719e31..20dfe78 100644
--- a/core/jni/android_util_Log.cpp
+++ b/core/jni/android_util_Log.cpp
@@ -21,7 +21,7 @@
 #include <android-base/macros.h>
 #include <assert.h>
 #include <cutils/properties.h>
-#include <log/logger.h>               // For LOGGER_ENTRY_MAX_PAYLOAD.
+#include <log/log.h>               // For LOGGER_ENTRY_MAX_PAYLOAD.
 #include <utils/Log.h>
 #include <utils/String8.h>
 
diff --git a/core/jni/android_util_jar_StrictJarFile.cpp b/core/jni/android_util_jar_StrictJarFile.cpp
index 2e31c8b..4f1f926 100644
--- a/core/jni/android_util_jar_StrictJarFile.cpp
+++ b/core/jni/android_util_jar_StrictJarFile.cpp
@@ -20,13 +20,14 @@
 #include <memory>
 #include <string>
 
+#include <log/log.h>
+
 #include "JNIHelp.h"
 #include "JniConstants.h"
 #include "ScopedLocalRef.h"
 #include "ScopedUtfChars.h"
 #include "jni.h"
 #include "ziparchive/zip_archive.h"
-#include "cutils/log.h"
 
 namespace android {
 
diff --git a/core/tests/coretests/src/com/android/internal/logging/LogBuilderTest.java b/core/tests/coretests/src/com/android/internal/logging/LogBuilderTest.java
index e7d23a8..e3f754c 100644
--- a/core/tests/coretests/src/com/android/internal/logging/LogBuilderTest.java
+++ b/core/tests/coretests/src/com/android/internal/logging/LogBuilderTest.java
@@ -5,7 +5,7 @@
 public class LogBuilderTest extends TestCase {
 
     public void testSerialize() {
-        LogBuilder builder = new LogBuilder();
+        LogBuilder builder = new LogBuilder(0);
         builder.addTaggedData(1, "one");
         builder.addTaggedData(2, "two");
         Object[] out = builder.serialize();
@@ -16,7 +16,7 @@
     }
 
     public void testInvalidInputThrows() {
-        LogBuilder builder = new LogBuilder();
+        LogBuilder builder = new LogBuilder(0);
         boolean threw = false;
         try {
             builder.addTaggedData(0, new Object());
@@ -28,7 +28,7 @@
     }
 
     public void testValidInputTypes() {
-        LogBuilder builder = new LogBuilder();
+        LogBuilder builder = new LogBuilder(0);
         builder.addTaggedData(1, "onetwothree");
         builder.addTaggedData(2, 123);
         builder.addTaggedData(3, 123L);
diff --git a/libs/androidfw/BackupData.cpp b/libs/androidfw/BackupData.cpp
index ba4a4ff..76a430e 100644
--- a/libs/androidfw/BackupData.cpp
+++ b/libs/androidfw/BackupData.cpp
@@ -16,14 +16,13 @@
 
 #define LOG_TAG "backup_data"
 
-#include <androidfw/BackupHelpers.h>
-#include <utils/ByteOrder.h>
-
 #include <stdio.h>
 #include <string.h>
 #include <unistd.h>
 
-#include <cutils/log.h>
+#include <androidfw/BackupHelpers.h>
+#include <log/log.h>
+#include <utils/ByteOrder.h>
 
 namespace android {
 
diff --git a/libs/androidfw/BackupHelpers.cpp b/libs/androidfw/BackupHelpers.cpp
index 78e9d91..8bfe2b6 100644
--- a/libs/androidfw/BackupHelpers.cpp
+++ b/libs/androidfw/BackupHelpers.cpp
@@ -18,23 +18,22 @@
 
 #include <androidfw/BackupHelpers.h>
 
-#include <utils/KeyedVector.h>
-#include <utils/ByteOrder.h>
-#include <utils/String8.h>
-
 #include <errno.h>
-#include <sys/types.h>
-#include <sys/uio.h>
-#include <sys/stat.h>
-#include <sys/time.h>  // for utimes
+#include <fcntl.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <sys/time.h>  // for utimes
+#include <sys/uio.h>
 #include <unistd.h>
 #include <utime.h>
-#include <fcntl.h>
 #include <zlib.h>
 
-#include <cutils/log.h>
+#include <log/log.h>
+#include <utils/ByteOrder.h>
+#include <utils/KeyedVector.h>
+#include <utils/String8.h>
 
 namespace android {
 
diff --git a/libs/androidfw/include/androidfw/CursorWindow.h b/libs/androidfw/include/androidfw/CursorWindow.h
index 8a2979a..f543565 100644
--- a/libs/androidfw/include/androidfw/CursorWindow.h
+++ b/libs/androidfw/include/androidfw/CursorWindow.h
@@ -17,11 +17,11 @@
 #ifndef _ANDROID__DATABASE_WINDOW_H
 #define _ANDROID__DATABASE_WINDOW_H
 
-#include <cutils/log.h>
 #include <stddef.h>
 #include <stdint.h>
 
 #include <binder/Parcel.h>
+#include <log/log.h>
 #include <utils/String8.h>
 
 #if LOG_NDEBUG
diff --git a/libs/hwui/Android.mk b/libs/hwui/Android.mk
index 18e59e5..8f7787b 100644
--- a/libs/hwui/Android.mk
+++ b/libs/hwui/Android.mk
@@ -75,6 +75,7 @@
     FrameInfo.cpp \
     FrameInfoVisualizer.cpp \
     GammaFontRenderer.cpp \
+    GlLayer.cpp \
     GlopBuilder.cpp \
     GpuMemoryTracker.cpp \
     GradientCache.cpp \
@@ -115,6 +116,7 @@
     Texture.cpp \
     TextureCache.cpp \
     VectorDrawable.cpp \
+    VkLayer.cpp \
     protos/hwui.proto
 
 hwui_test_common_src_files := \
diff --git a/libs/hwui/Caches.cpp b/libs/hwui/Caches.cpp
index b463e45..a0366de 100644
--- a/libs/hwui/Caches.cpp
+++ b/libs/hwui/Caches.cpp
@@ -17,7 +17,7 @@
 #include "Caches.h"
 
 #include "GammaFontRenderer.h"
-#include "Layer.h"
+#include "GlLayer.h"
 #include "Properties.h"
 #include "renderstate/RenderState.h"
 #include "ShadowTessellator.h"
@@ -170,9 +170,11 @@
         for (std::set<Layer*>::iterator it = mRenderState->mActiveLayers.begin();
                 it != mRenderState->mActiveLayers.end(); it++) {
             const Layer* layer = *it;
-            log.appendFormat("    Layer size %dx%d; texid=%u refs=%d\n",
+            LOG_ALWAYS_FATAL_IF(layer->getApi() != Layer::Api::OpenGL);
+            const GlLayer* glLayer = static_cast<const GlLayer*>(layer);
+            log.appendFormat("    GlLayer size %dx%d; texid=%u refs=%d\n",
                     layer->getWidth(), layer->getHeight(),
-                    layer->getTextureId(),
+                    glLayer->getTextureId(),
                     layer->getStrongCount());
             memused += layer->getWidth() * layer->getHeight() * 4;
         }
diff --git a/libs/hwui/DamageAccumulator.cpp b/libs/hwui/DamageAccumulator.cpp
index 6d5833b..2b4fe17 100644
--- a/libs/hwui/DamageAccumulator.cpp
+++ b/libs/hwui/DamageAccumulator.cpp
@@ -16,7 +16,7 @@
 
 #include "DamageAccumulator.h"
 
-#include <cutils/log.h>
+#include <log/log.h>
 
 #include "RenderNode.h"
 #include "utils/MathUtils.h"
diff --git a/libs/hwui/DeferredLayerUpdater.cpp b/libs/hwui/DeferredLayerUpdater.cpp
index a7d5f60..3e8e8a1 100644
--- a/libs/hwui/DeferredLayerUpdater.cpp
+++ b/libs/hwui/DeferredLayerUpdater.cpp
@@ -15,6 +15,8 @@
  */
 #include "DeferredLayerUpdater.h"
 
+#include "GlLayer.h"
+#include "VkLayer.h"
 #include "renderthread/EglManager.h"
 #include "renderthread/RenderTask.h"
 #include "utils/PaintUtils.h"
@@ -55,13 +57,23 @@
     mLayer->setAlpha(mAlpha, mMode);
 
     if (mSurfaceTexture.get()) {
-        if (mNeedsGLContextAttach) {
-            mNeedsGLContextAttach = false;
-            mSurfaceTexture->attachToContext(mLayer->getTextureId());
-        }
-        if (mUpdateTexImage) {
-            mUpdateTexImage = false;
-            doUpdateTexImage();
+        if (mLayer->getApi() == Layer::Api::Vulkan) {
+            if (mUpdateTexImage) {
+                mUpdateTexImage = false;
+                doUpdateVkTexImage();
+            }
+        } else {
+            LOG_ALWAYS_FATAL_IF(mLayer->getApi() != Layer::Api::OpenGL,
+                                "apply surfaceTexture with non GL backend %x, GL %x, VK %x",
+                                mLayer->getApi(), Layer::Api::OpenGL, Layer::Api::Vulkan);
+            if (mNeedsGLContextAttach) {
+                mNeedsGLContextAttach = false;
+                mSurfaceTexture->attachToContext(static_cast<GlLayer*>(mLayer)->getTextureId());
+            }
+            if (mUpdateTexImage) {
+                mUpdateTexImage = false;
+                doUpdateTexImage();
+            }
         }
         if (mTransform) {
             mLayer->getTransform().load(*mTransform);
@@ -71,6 +83,9 @@
 }
 
 void DeferredLayerUpdater::doUpdateTexImage() {
+    LOG_ALWAYS_FATAL_IF(mLayer->getApi() != Layer::Api::OpenGL,
+                        "doUpdateTexImage non GL backend %x, GL %x, VK %x",
+                        mLayer->getApi(), Layer::Api::OpenGL, Layer::Api::Vulkan);
     if (mSurfaceTexture->updateTexImage() == NO_ERROR) {
         float transform[16];
 
@@ -110,30 +125,53 @@
     }
 }
 
+void DeferredLayerUpdater::doUpdateVkTexImage() {
+    LOG_ALWAYS_FATAL_IF(mLayer->getApi() != Layer::Api::Vulkan,
+                        "updateLayer non Vulkan backend %x, GL %x, VK %x",
+                        mLayer->getApi(), Layer::Api::OpenGL, Layer::Api::Vulkan);
+
+    static const mat4 identityMatrix;
+    updateLayer(false, identityMatrix.data);
+
+    VkLayer* vkLayer = static_cast<VkLayer*>(mLayer);
+    vkLayer->updateTexture();
+}
+
 void DeferredLayerUpdater::updateLayer(bool forceFilter, GLenum renderTarget,
         const float* textureTransform) {
+    LOG_ALWAYS_FATAL_IF(mLayer->getApi() != Layer::Api::OpenGL,
+                        "updateLayer non GL backend %x, GL %x, VK %x",
+                        mLayer->getApi(), Layer::Api::OpenGL, Layer::Api::Vulkan);
+
+    updateLayer(forceFilter, textureTransform);
+
+    GlLayer* glLayer = static_cast<GlLayer*>(mLayer);
+    if (renderTarget != glLayer->getRenderTarget()) {
+        glLayer->setRenderTarget(renderTarget);
+        glLayer->bindTexture();
+        glLayer->setFilter(GL_NEAREST, false, true);
+        glLayer->setWrap(GL_CLAMP_TO_EDGE, false, true);
+    }
+}
+
+void DeferredLayerUpdater::updateLayer(bool forceFilter, const float* textureTransform) {
     mLayer->setBlend(mBlend);
     mLayer->setForceFilter(forceFilter);
     mLayer->setSize(mWidth, mHeight);
     mLayer->getTexTransform().load(textureTransform);
-
-    if (renderTarget != mLayer->getRenderTarget()) {
-        mLayer->setRenderTarget(renderTarget);
-        mLayer->bindTexture();
-        mLayer->setFilter(GL_NEAREST, false, true);
-        mLayer->setWrap(GL_CLAMP_TO_EDGE, false, true);
-    }
 }
 
 void DeferredLayerUpdater::detachSurfaceTexture() {
     if (mSurfaceTexture.get()) {
-        status_t err = mSurfaceTexture->detachFromContext();
-        if (err != 0) {
-            // TODO: Elevate to fatal exception
-            ALOGE("Failed to detach SurfaceTexture from context %d", err);
+        if (mLayer->getApi() == Layer::Api::OpenGL) {
+            status_t err = mSurfaceTexture->detachFromContext();
+            if (err != 0) {
+                // TODO: Elevate to fatal exception
+                ALOGE("Failed to detach SurfaceTexture from context %d", err);
+            }
+            static_cast<GlLayer*>(mLayer)->clearTexture();
         }
         mSurfaceTexture = nullptr;
-        mLayer->clearTexture();
     }
 }
 
diff --git a/libs/hwui/DeferredLayerUpdater.h b/libs/hwui/DeferredLayerUpdater.h
index 7335008..ead8314 100644
--- a/libs/hwui/DeferredLayerUpdater.h
+++ b/libs/hwui/DeferredLayerUpdater.h
@@ -22,6 +22,9 @@
 #include <SkMatrix.h>
 #include <utils/StrongPointer.h>
 
+#include <GLES2/gl2.h>
+#include <GLES2/gl2ext.h>
+
 #include "Layer.h"
 #include "Rect.h"
 #include "renderthread/RenderThread.h"
@@ -110,6 +113,8 @@
     Layer* mLayer;
 
     void doUpdateTexImage();
+    void doUpdateVkTexImage();
+    void updateLayer(bool forceFilter, const float* textureTransform);
 };
 
 } /* namespace uirenderer */
diff --git a/libs/hwui/DeviceInfo.cpp b/libs/hwui/DeviceInfo.cpp
index 700642e..d180ba5 100644
--- a/libs/hwui/DeviceInfo.cpp
+++ b/libs/hwui/DeviceInfo.cpp
@@ -13,16 +13,18 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 #include <DeviceInfo.h>
 
 #include "Extensions.h"
 
-#include <GLES2/gl2.h>
-#include <log/log.h>
-
 #include <thread>
 #include <mutex>
 
+#include <log/log.h>
+
+#include <GLES2/gl2.h>
+
 namespace android {
 namespace uirenderer {
 
diff --git a/libs/hwui/GlLayer.cpp b/libs/hwui/GlLayer.cpp
new file mode 100644
index 0000000..c0ab895
--- /dev/null
+++ b/libs/hwui/GlLayer.cpp
@@ -0,0 +1,76 @@
+/*
+ * 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.
+ */
+
+#include "GlLayer.h"
+
+#include "Caches.h"
+#include "RenderNode.h"
+#include "renderstate/RenderState.h"
+#include "utils/TraceUtils.h"
+
+#include <utils/Log.h>
+
+#define ATRACE_LAYER_WORK(label) \
+    ATRACE_FORMAT("%s HW Layer DisplayList %s %ux%u", \
+            label, \
+            (renderNode.get() != NULL) ? renderNode->getName() : "", \
+            getWidth(), getHeight())
+
+namespace android {
+namespace uirenderer {
+
+GlLayer::GlLayer(RenderState& renderState, uint32_t layerWidth, uint32_t layerHeight)
+        : Layer(renderState, Api::OpenGL)
+        , caches(Caches::getInstance())
+        , texture(caches) {
+    texture.mWidth = layerWidth;
+    texture.mHeight = layerHeight;
+}
+
+GlLayer::~GlLayer() {
+    if (texture.mId) {
+        texture.deleteTexture();
+    }
+}
+
+void GlLayer::onGlContextLost() {
+    texture.deleteTexture();
+}
+
+void GlLayer::bindTexture() const {
+    if (texture.mId) {
+        caches.textureState().bindTexture(texture.target(), texture.mId);
+    }
+}
+
+void GlLayer::generateTexture() {
+    if (!texture.mId) {
+        glGenTextures(1, &texture.mId);
+    }
+}
+
+void GlLayer::clearTexture() {
+    // There's a rare possibility that Caches could have been destroyed already
+    // since this method is queued up as a task.
+    // Since this is a reset method, treat this as non-fatal.
+    if (caches.isInitialized()) {
+        caches.textureState().unbindTexture(texture.mId);
+    }
+    texture.mId = 0;
+}
+
+}; // namespace uirenderer
+}; // namespace android
diff --git a/libs/hwui/GlLayer.h b/libs/hwui/GlLayer.h
new file mode 100644
index 0000000..54bf5ad
--- /dev/null
+++ b/libs/hwui/GlLayer.h
@@ -0,0 +1,112 @@
+/*
+ * 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.
+ */
+
+#pragma once
+
+#include "Layer.h"
+
+#include "Texture.h"
+
+namespace android {
+namespace uirenderer {
+
+// Forward declarations
+class Caches;
+
+/**
+ * A layer has dimensions and is backed by an OpenGL texture or FBO.
+ */
+class GlLayer : public Layer {
+public:
+    GlLayer(RenderState& renderState, uint32_t layerWidth, uint32_t layerHeight);
+    virtual ~GlLayer();
+
+    uint32_t getWidth() const override {
+        return texture.mWidth;
+    }
+
+    uint32_t getHeight() const override {
+        return texture.mHeight;
+    }
+
+    void setSize(uint32_t width, uint32_t height) override {
+        texture.updateSize(width, height, texture.internalFormat(), texture.format(),
+                texture.target());
+    }
+
+    void setBlend(bool blend) override {
+        texture.blend = blend;
+    }
+
+    bool isBlend() const override {
+        return texture.blend;
+    }
+
+    inline GLuint getTextureId() const {
+        return texture.id();
+    }
+
+    inline Texture& getTexture() {
+        return texture;
+    }
+
+    inline GLenum getRenderTarget() const {
+        return texture.target();
+    }
+
+    inline void setRenderTarget(GLenum renderTarget) {
+        texture.mTarget = renderTarget;
+    }
+
+    inline bool isRenderable() const {
+        return texture.target() != GL_NONE;
+    }
+
+    void setWrap(GLenum wrap, bool bindTexture = false, bool force = false) {
+        texture.setWrap(wrap, bindTexture, force);
+    }
+
+    void setFilter(GLenum filter, bool bindTexture = false, bool force = false) {
+        texture.setFilter(filter, bindTexture, force);
+    }
+
+    void bindTexture() const;
+    void generateTexture();
+
+    /**
+     * When the caller frees the texture itself, the caller
+     * must call this method to tell this layer that it lost
+     * the texture.
+     */
+    void clearTexture();
+
+    /**
+     * Lost the GL context but the layer is still around, mark it invalid internally
+     * so the dtor knows not to do any GL work
+     */
+    void onGlContextLost();
+
+private:
+    Caches& caches;
+
+    /**
+     * The texture backing this layer.
+     */
+    Texture texture;
+}; // struct GlLayer
+
+}; // namespace uirenderer
+}; // namespace android
diff --git a/libs/hwui/GlopBuilder.cpp b/libs/hwui/GlopBuilder.cpp
index 34e6d39..8a6e038 100644
--- a/libs/hwui/GlopBuilder.cpp
+++ b/libs/hwui/GlopBuilder.cpp
@@ -16,6 +16,7 @@
 #include "GlopBuilder.h"
 
 #include "Caches.h"
+#include "GlLayer.h"
 #include "Glop.h"
 #include "Layer.h"
 #include "Matrix.h"
@@ -440,7 +441,7 @@
     return *this;
 }
 
-GlopBuilder& GlopBuilder::setFillTextureLayer(Layer& layer, float alpha) {
+GlopBuilder& GlopBuilder::setFillTextureLayer(GlLayer& layer, float alpha) {
     TRIGGER_STAGE(kFillStage);
     REQUIRE_STAGES(kMeshStage | kRoundRectClipStage);
 
diff --git a/libs/hwui/GlopBuilder.h b/libs/hwui/GlopBuilder.h
index 8a8b652..87b1568 100644
--- a/libs/hwui/GlopBuilder.h
+++ b/libs/hwui/GlopBuilder.h
@@ -28,6 +28,7 @@
 namespace uirenderer {
 
 class Caches;
+class GlLayer;
 class Matrix4;
 class Patch;
 class RenderState;
@@ -71,7 +72,7 @@
     GlopBuilder& setFillClear();
     GlopBuilder& setFillLayer(Texture& texture, const SkColorFilter* colorFilter,
             float alpha, SkBlendMode mode, Blend::ModeOrderSwap modeUsage);
-    GlopBuilder& setFillTextureLayer(Layer& layer, float alpha);
+    GlopBuilder& setFillTextureLayer(GlLayer& layer, float alpha);
     // TODO: setFillLayer normally forces its own wrap & filter mode,
     // which isn't always correct.
     GlopBuilder& setFillExternalTexture(Texture& texture, Matrix4& textureTransform);
diff --git a/libs/hwui/GpuMemoryTracker.cpp b/libs/hwui/GpuMemoryTracker.cpp
index 4fb5701..a52ec87 100644
--- a/libs/hwui/GpuMemoryTracker.cpp
+++ b/libs/hwui/GpuMemoryTracker.cpp
@@ -67,13 +67,13 @@
     gObjectStats[static_cast<int>(mType)].count--;
 }
 
-void GpuMemoryTracker::onGLContextCreated() {
-    LOG_ALWAYS_FATAL_IF(gGpuThread != 0, "We already have a GL thread? "
-            "current = %lu, gl thread = %lu", pthread_self(), gGpuThread);
+void GpuMemoryTracker::onGpuContextCreated() {
+    LOG_ALWAYS_FATAL_IF(gGpuThread != 0, "We already have a gpu thread? "
+            "current = %lu, gpu thread = %lu", pthread_self(), gGpuThread);
     gGpuThread = pthread_self();
 }
 
-void GpuMemoryTracker::onGLContextDestroyed() {
+void GpuMemoryTracker::onGpuContextDestroyed() {
     gGpuThread = 0;
     if (CC_UNLIKELY(gObjectSet.size() > 0)) {
         std::stringstream os;
diff --git a/libs/hwui/GpuMemoryTracker.h b/libs/hwui/GpuMemoryTracker.h
index bfb1bf1..18e2330 100644
--- a/libs/hwui/GpuMemoryTracker.h
+++ b/libs/hwui/GpuMemoryTracker.h
@@ -15,10 +15,11 @@
  */
 #pragma once
 
-#include <cutils/log.h>
 #include <pthread.h>
 #include <ostream>
 
+#include <log/log.h>
+
 namespace android {
 namespace uirenderer {
 
@@ -43,8 +44,8 @@
     GpuObjectType objectType() { return mType; }
     int objectSize() { return mSize; }
 
-    static void onGLContextCreated();
-    static void onGLContextDestroyed();
+    static void onGpuContextCreated();
+    static void onGpuContextDestroyed();
     static void dump();
     static void dump(std::ostream& stream);
     static int getInstanceCount(GpuObjectType type);
diff --git a/libs/hwui/Interpolator.cpp b/libs/hwui/Interpolator.cpp
index f94a22d..d740c03 100644
--- a/libs/hwui/Interpolator.cpp
+++ b/libs/hwui/Interpolator.cpp
@@ -16,10 +16,11 @@
 
 #include "Interpolator.h"
 
-#include "utils/MathUtils.h"
-
 #include <algorithm>
-#include <cutils/log.h>
+
+#include <log/log.h>
+
+#include "utils/MathUtils.h"
 
 namespace android {
 namespace uirenderer {
diff --git a/libs/hwui/JankTracker.cpp b/libs/hwui/JankTracker.cpp
index ed6b211..0a9bf54 100644
--- a/libs/hwui/JankTracker.cpp
+++ b/libs/hwui/JankTracker.cpp
@@ -15,19 +15,21 @@
  */
 #include "JankTracker.h"
 
-#include "Properties.h"
-#include "utils/TimeUtils.h"
-
-#include <algorithm>
-#include <cutils/ashmem.h>
-#include <cutils/log.h>
-#include <cstdio>
 #include <errno.h>
 #include <inttypes.h>
-#include <limits>
+
+#include <algorithm>
 #include <cmath>
+#include <cstdio>
+#include <limits>
 #include <sys/mman.h>
 
+#include <cutils/ashmem.h>
+#include <log/log.h>
+
+#include "Properties.h"
+#include "utils/TimeUtils.h"
+
 namespace android {
 namespace uirenderer {
 
diff --git a/libs/hwui/Layer.cpp b/libs/hwui/Layer.cpp
index 88817ef..331bb81 100644
--- a/libs/hwui/Layer.cpp
+++ b/libs/hwui/Layer.cpp
@@ -16,77 +16,36 @@
 
 #include "Layer.h"
 
-#include "Caches.h"
-#include "RenderNode.h"
 #include "renderstate/RenderState.h"
-#include "utils/TraceUtils.h"
 
-#include <utils/Log.h>
-
-#define ATRACE_LAYER_WORK(label) \
-    ATRACE_FORMAT("%s HW Layer DisplayList %s %ux%u", \
-            label, \
-            (renderNode.get() != NULL) ? renderNode->getName() : "", \
-            getWidth(), getHeight())
+#include <SkColorFilter.h>
 
 namespace android {
 namespace uirenderer {
 
-Layer::Layer(RenderState& renderState, uint32_t layerWidth, uint32_t layerHeight)
+Layer::Layer(RenderState& renderState, Api api)
         : GpuMemoryTracker(GpuObjectType::Layer)
-        , state(State::Uncached)
-        , caches(Caches::getInstance())
-        , renderState(renderState)
-        , texture(caches) {
+        , mRenderState(renderState)
+        , mApi(api) {
     // TODO: This is a violation of Android's typical ref counting, but it
     // preserves the old inc/dec ref locations. This should be changed...
     incStrong(nullptr);
-    texture.mWidth = layerWidth;
-    texture.mHeight = layerHeight;
+
     renderState.registerLayer(this);
 }
 
 Layer::~Layer() {
-    renderState.unregisterLayer(this);
     SkSafeUnref(colorFilter);
 
-    if (texture.mId) {
-        texture.deleteTexture();
-    }
-}
-
-void Layer::onGlContextLost() {
-    texture.deleteTexture();
+    mRenderState.unregisterLayer(this);
 }
 
 void Layer::setColorFilter(SkColorFilter* filter) {
     SkRefCnt_SafeAssign(colorFilter, filter);
 }
 
-void Layer::bindTexture() const {
-    if (texture.mId) {
-        caches.textureState().bindTexture(texture.target(), texture.mId);
-    }
-}
-
-void Layer::generateTexture() {
-    if (!texture.mId) {
-        glGenTextures(1, &texture.mId);
-    }
-}
-
-void Layer::clearTexture() {
-    // There's a rare possibility that Caches could have been destroyed already
-    // since this method is queued up as a task.
-    // Since this is a reset method, treat this as non-fatal.
-    if (caches.isInitialized()) {
-        caches.textureState().unbindTexture(texture.mId);
-    }
-    texture.mId = 0;
-}
-
 void Layer::postDecStrong() {
-    renderState.postDecStrong(this);
+    mRenderState.postDecStrong(this);
 }
 
 }; // namespace uirenderer
diff --git a/libs/hwui/Layer.h b/libs/hwui/Layer.h
index 8e71cd1..3b639ee 100644
--- a/libs/hwui/Layer.h
+++ b/libs/hwui/Layer.h
@@ -16,25 +16,13 @@
 
 #pragma once
 
-#include <cutils/compiler.h>
-#include <sys/types.h>
-#include <utils/StrongPointer.h>
 #include <utils/RefBase.h>
-#include <memory>
-
-#include <GLES2/gl2.h>
 #include <GpuMemoryTracker.h>
 
-#include <ui/Region.h>
-
 #include <SkPaint.h>
 #include <SkBlendMode.h>
 
 #include "Matrix.h"
-#include "Rect.h"
-#include "RenderBuffer.h"
-#include "Texture.h"
-#include "Vertex.h"
 
 namespace android {
 namespace uirenderer {
@@ -43,49 +31,33 @@
 // Layers
 ///////////////////////////////////////////////////////////////////////////////
 
-// Forward declarations
-class Caches;
 class RenderState;
 
 /**
- * A layer has dimensions and is backed by an OpenGL texture or FBO.
+ * A layer has dimensions and is backed by a backend specific texture or framebuffer.
  */
 class Layer : public VirtualLightRefBase, GpuMemoryTracker {
 public:
-    // layer lifecycle, controlled from outside
-    enum class State {
-        Uncached = 0,
-        InCache = 1,
-        FailedToCache = 2,
-        RemovedFromCache = 3,
-        DeletedFromCache = 4,
-        InGarbageList = 5,
+    enum class Api {
+        OpenGL = 0,
+        Vulkan = 1,
     };
-    State state; // public for logging/debugging purposes
 
-    Layer(RenderState& renderState, uint32_t layerWidth, uint32_t layerHeight);
+    Api getApi() const {
+        return mApi;
+    }
+
     ~Layer();
 
-    inline uint32_t getWidth() const {
-        return texture.mWidth;
-    }
+    virtual uint32_t getWidth() const = 0;
 
-    inline uint32_t getHeight() const {
-        return texture.mHeight;
-    }
+    virtual uint32_t getHeight() const = 0;
 
-    void setSize(uint32_t width, uint32_t height) {
-        texture.updateSize(width, height, texture.internalFormat(), texture.format(),
-                texture.target());
-    }
+    virtual void setSize(uint32_t width, uint32_t height) = 0;
 
-    inline void setBlend(bool blend) {
-        texture.blend = blend;
-    }
+    virtual void setBlend(bool blend) = 0;
 
-    inline bool isBlend() const {
-        return texture.blend;
-    }
+    virtual bool isBlend() const = 0;
 
     inline void setForceFilter(bool forceFilter) {
         this->forceFilter = forceFilter;
@@ -112,50 +84,12 @@
         return mode;
     }
 
-    inline GLuint getTextureId() const {
-        return texture.id();
-    }
-
-    inline Texture& getTexture() {
-        return texture;
-    }
-
-    inline GLenum getRenderTarget() const {
-        return texture.target();
-    }
-
-    inline void setRenderTarget(GLenum renderTarget) {
-        texture.mTarget = renderTarget;
-    }
-
-    inline bool isRenderable() const {
-        return texture.target() != GL_NONE;
-    }
-
-    void setWrap(GLenum wrap, bool bindTexture = false, bool force = false) {
-        texture.setWrap(wrap, bindTexture, force);
-    }
-
-    void setFilter(GLenum filter, bool bindTexture = false, bool force = false) {
-        texture.setFilter(filter, bindTexture, force);
-    }
-
     inline SkColorFilter* getColorFilter() const {
         return colorFilter;
     }
 
     void setColorFilter(SkColorFilter* filter);
 
-    void bindTexture() const;
-    void generateTexture();
-
-    /**
-     * When the caller frees the texture itself, the caller
-     * must call this method to tell this layer that it lost
-     * the texture.
-     */
-    void clearTexture();
-
     inline mat4& getTexTransform() {
         return texTransform;
     }
@@ -170,21 +104,13 @@
      */
     void postDecStrong();
 
-    /**
-     * Lost the GL context but the layer is still around, mark it invalid internally
-     * so the dtor knows not to do any GL work
-     */
-    void onGlContextLost();
+protected:
+    Layer(RenderState& renderState, Api api);
+
+    RenderState& mRenderState;
 
 private:
-    Caches& caches;
-
-    RenderState& renderState;
-
-    /**
-     * The texture backing this layer.
-     */
-    Texture texture;
+    Api mApi;
 
     /**
      * Color filter used to draw this layer. Optional.
diff --git a/libs/hwui/OpenGLReadback.cpp b/libs/hwui/OpenGLReadback.cpp
index 938b6ef..c460c0d 100644
--- a/libs/hwui/OpenGLReadback.cpp
+++ b/libs/hwui/OpenGLReadback.cpp
@@ -19,7 +19,7 @@
 #include "Caches.h"
 #include "Image.h"
 #include "GlopBuilder.h"
-#include "Layer.h"
+#include "GlLayer.h"
 #include "renderstate/RenderState.h"
 #include "renderthread/EglManager.h"
 #include "utils/GLUtils.h"
@@ -262,7 +262,7 @@
 }
 
 bool OpenGLReadbackImpl::copyLayerInto(renderthread::RenderThread& renderThread,
-        Layer& layer, SkBitmap* bitmap) {
+        GlLayer& layer, SkBitmap* bitmap) {
     return CopyResult::Success == copyTextureInto(Caches::getInstance(),
             renderThread.renderState(), layer.getTexture(), layer.getTexTransform(),
             Rect(), bitmap);
diff --git a/libs/hwui/OpenGLReadback.h b/libs/hwui/OpenGLReadback.h
index f4ebabc..c9222cf 100644
--- a/libs/hwui/OpenGLReadback.h
+++ b/libs/hwui/OpenGLReadback.h
@@ -22,7 +22,7 @@
 namespace uirenderer {
 
 class Matrix4;
-class Layer;
+class GlLayer;
 
 class OpenGLReadback : public Readback {
 public:
@@ -49,7 +49,7 @@
     /**
      * Copies the layer's contents into the provided bitmap.
      */
-    static bool copyLayerInto(renderthread::RenderThread& renderThread, Layer& layer,
+    static bool copyLayerInto(renderthread::RenderThread& renderThread, GlLayer& layer,
             SkBitmap* bitmap);
 
 protected:
diff --git a/libs/hwui/PixelBuffer.h b/libs/hwui/PixelBuffer.h
index 9536bc8..77d5e41 100644
--- a/libs/hwui/PixelBuffer.h
+++ b/libs/hwui/PixelBuffer.h
@@ -18,7 +18,8 @@
 #define ANDROID_HWUI_PIXEL_BUFFER_H
 
 #include <GLES3/gl3.h>
-#include <cutils/log.h>
+
+#include <log/log.h>
 
 namespace android {
 namespace uirenderer {
diff --git a/libs/hwui/Properties.cpp b/libs/hwui/Properties.cpp
index 848161e..a766381 100644
--- a/libs/hwui/Properties.cpp
+++ b/libs/hwui/Properties.cpp
@@ -13,17 +13,17 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 #include "Properties.h"
-
 #include "Debug.h"
 
-#include <cutils/compiler.h>
-#include <cutils/log.h>
-#include <cutils/properties.h>
-
 #include <algorithm>
 #include <cstdlib>
 
+#include <log/log.h>
+#include <cutils/compiler.h>
+#include <cutils/properties.h>
+
 namespace android {
 namespace uirenderer {
 
diff --git a/libs/hwui/RecordedOp.h b/libs/hwui/RecordedOp.h
index f9a7c36f2..dea2be6 100644
--- a/libs/hwui/RecordedOp.h
+++ b/libs/hwui/RecordedOp.h
@@ -17,6 +17,7 @@
 #pragma once
 
 #include "font/FontUtil.h"
+#include "GlLayer.h"
 #include "Matrix.h"
 #include "Rect.h"
 #include "RenderNode.h"
@@ -413,7 +414,7 @@
 };
 
 struct TextureLayerOp : RecordedOp {
-    TextureLayerOp(BASE_PARAMS_PAINTLESS, Layer* layer)
+    TextureLayerOp(BASE_PARAMS_PAINTLESS, GlLayer* layer)
             : SUPER_PAINTLESS(TextureLayerOp)
             , layer(layer) {}
 
@@ -424,7 +425,7 @@
             , layer(op.layer) {
 
     }
-    Layer* layer;
+    GlLayer* layer;
 };
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
diff --git a/libs/hwui/RecordingCanvas.cpp b/libs/hwui/RecordingCanvas.cpp
index ee6279d..b5e5d68 100644
--- a/libs/hwui/RecordingCanvas.cpp
+++ b/libs/hwui/RecordingCanvas.cpp
@@ -606,13 +606,14 @@
     // We ref the DeferredLayerUpdater due to its thread-safe ref-counting semantics.
     mDisplayList->ref(layerHandle);
 
+    LOG_ALWAYS_FATAL_IF(layerHandle->backingLayer()->getApi() != Layer::Api::OpenGL);
     // Note that the backing layer has *not* yet been updated, so don't trust
     // its width, height, transform, etc...!
     addOp(alloc().create_trivial<TextureLayerOp>(
             Rect(layerHandle->getWidth(), layerHandle->getHeight()),
             *(mState.currentSnapshot()->transform),
             getRecordedClip(),
-            layerHandle->backingLayer()));
+            static_cast<GlLayer*>(layerHandle->backingLayer())));
 }
 
 void RecordingCanvas::callDrawGLFunction(Functor* functor,
diff --git a/libs/hwui/SkiaCanvasProxy.cpp b/libs/hwui/SkiaCanvasProxy.cpp
index c5156cf..f32612d 100644
--- a/libs/hwui/SkiaCanvasProxy.cpp
+++ b/libs/hwui/SkiaCanvasProxy.cpp
@@ -16,9 +16,11 @@
 
 #include "SkiaCanvasProxy.h"
 
-#include "hwui/Bitmap.h"
+#include <memory>
 
-#include <cutils/log.h>
+#include <log/log.h>
+
+#include "hwui/Bitmap.h"
 #include <SkLatticeIter.h>
 #include <SkPatchUtils.h>
 #include <SkPaint.h>
@@ -30,8 +32,6 @@
 #include <SkSurface.h>
 #include <SkTextBlobRunIterator.h>
 
-#include <memory>
-
 namespace android {
 namespace uirenderer {
 
diff --git a/libs/hwui/SkiaShader.cpp b/libs/hwui/SkiaShader.cpp
index fadb960..9239986 100644
--- a/libs/hwui/SkiaShader.cpp
+++ b/libs/hwui/SkiaShader.cpp
@@ -18,7 +18,6 @@
 
 #include "Caches.h"
 #include "Extensions.h"
-#include "Layer.h"
 #include "Matrix.h"
 #include "Texture.h"
 #include "hwui/Bitmap.h"
@@ -317,42 +316,6 @@
     return true;
 }
 
-bool tryStoreLayer(Caches& caches, const SkShader& shader, const Matrix4& modelViewMatrix,
-        GLuint* textureUnit, ProgramDescription* description,
-        SkiaShaderData::LayerShaderData* outData) {
-    Layer* layer;
-    if (!shader.asACustomShader(reinterpret_cast<void**>(&layer))) {
-        return false;
-    }
-
-    description->hasBitmap = true;
-    outData->layer = layer;
-    outData->bitmapSampler = (*textureUnit)++;
-
-    const float width = layer->getWidth();
-    const float height = layer->getHeight();
-
-    computeScreenSpaceMatrix(outData->textureTransform, SkMatrix::I(), shader.getLocalMatrix(),
-            modelViewMatrix);
-
-    outData->textureDimension[0] = 1.0f / width;
-    outData->textureDimension[1] = 1.0f / height;
-    return true;
-}
-
-void applyLayer(Caches& caches, const SkiaShaderData::LayerShaderData& data) {
-    caches.textureState().activateTexture(data.bitmapSampler);
-
-    data.layer->bindTexture();
-    data.layer->setWrap(GL_CLAMP_TO_EDGE);
-    data.layer->setFilter(GL_LINEAR);
-
-    glUniform1i(caches.program().getUniform("bitmapSampler"), data.bitmapSampler);
-    glUniformMatrix4fv(caches.program().getUniform("textureTransform"), 1,
-            GL_FALSE, &data.textureTransform.data[0]);
-    glUniform2fv(caches.program().getUniform("textureDimension"), 1, &data.textureDimension[0]);
-}
-
 void SkiaShader::store(Caches& caches, const SkShader& shader, const Matrix4& modelViewMatrix,
         GLuint* textureUnit, ProgramDescription* description,
         SkiaShaderData* outData) {
@@ -374,12 +337,6 @@
         return;
     }
 
-    if (tryStoreLayer(caches, shader, modelViewMatrix,
-            textureUnit, description, &outData->layerData)) {
-        outData->skiaShaderType = kLayer_SkiaShaderType;
-        return;
-    }
-
     // Unknown/unsupported type, so explicitly ignore shader
     outData->skiaShaderType = kNone_SkiaShaderType;
 }
@@ -394,10 +351,6 @@
     if (data.skiaShaderType & kBitmap_SkiaShaderType) {
         applyBitmap(caches, data.bitmapData);
     }
-
-    if (data.skiaShaderType == kLayer_SkiaShaderType) {
-        applyLayer(caches, data.layerData);
-    }
 }
 
 }; // namespace uirenderer
diff --git a/libs/hwui/SkiaShader.h b/libs/hwui/SkiaShader.h
index d2f37cd..ab578d5 100644
--- a/libs/hwui/SkiaShader.h
+++ b/libs/hwui/SkiaShader.h
@@ -29,7 +29,6 @@
 
 class Caches;
 class Extensions;
-class Layer;
 class Texture;
 struct ProgramDescription;
 
@@ -45,7 +44,6 @@
     kBitmap_SkiaShaderType = 1,
     kGradient_SkiaShaderType = 2,
     kCompose_SkiaShaderType = kBitmap_SkiaShaderType | kGradient_SkiaShaderType,
-    kLayer_SkiaShaderType = 4,
 };
 
 struct SkiaShaderData {
@@ -71,15 +69,6 @@
         GLuint gradientSampler;
         GLenum wrapST;
     } gradientData;
-    struct LayerShaderData {
-        Layer* layer;
-        GLuint bitmapSampler;
-        GLenum wrapS;
-        GLenum wrapT;
-
-        Matrix4 textureTransform;
-        float textureDimension[2];
-    } layerData;
 };
 
 class SkiaShader {
diff --git a/libs/hwui/Texture.h b/libs/hwui/Texture.h
index c75e88f..b8397cc 100644
--- a/libs/hwui/Texture.h
+++ b/libs/hwui/Texture.h
@@ -159,10 +159,10 @@
      */
     void* isInUse = nullptr;
 private:
-    // TODO: Temporarily grant private access to Layer, remove once
-    // Layer can be de-tangled from being a dual-purpose render target
+    // TODO: Temporarily grant private access to GlLayer, remove once
+    // GlLayer can be de-tangled from being a dual-purpose render target
     // and external texture wrapper
-    friend class Layer;
+    friend class GlLayer;
 
     // Returns true if the size changed, false if it was the same
     bool updateSize(uint32_t width, uint32_t height, GLint internalFormat,
diff --git a/libs/hwui/VkLayer.cpp b/libs/hwui/VkLayer.cpp
new file mode 100644
index 0000000..391acf1
--- /dev/null
+++ b/libs/hwui/VkLayer.cpp
@@ -0,0 +1,40 @@
+/*
+ * 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.
+ */
+
+#include "VkLayer.h"
+
+#include "renderstate/RenderState.h"
+
+#include <SkCanvas.h>
+#include <SkSurface.h>
+
+namespace android {
+namespace uirenderer {
+
+void VkLayer::updateTexture() {
+    sk_sp<SkSurface> surface;
+    SkImageInfo info = SkImageInfo::MakeS32(mWidth, mHeight, kPremul_SkAlphaType);
+    surface = SkSurface::MakeRenderTarget(mRenderState.getGrContext(), SkBudgeted::kNo, info);
+    surface->getCanvas()->clear(SK_ColorBLUE);
+    mImage = surface->makeImageSnapshot(SkBudgeted::kNo, SkSurface::kNo_ForceUnique);
+}
+
+void VkLayer::onVkContextDestroyed() {
+    mImage = nullptr;
+}
+
+}; // namespace uirenderer
+}; // namespace android
diff --git a/libs/hwui/VkLayer.h b/libs/hwui/VkLayer.h
new file mode 100644
index 0000000..39522b3
--- /dev/null
+++ b/libs/hwui/VkLayer.h
@@ -0,0 +1,76 @@
+/*
+ * 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.
+ */
+
+#pragma once
+
+#include "Layer.h"
+
+#include <SkImage.h>
+
+namespace android {
+namespace uirenderer {
+/**
+ * A layer has dimensions and is backed by a VkImage.
+ */
+class VkLayer : public Layer {
+public:
+    VkLayer(RenderState& renderState, uint32_t layerWidth, uint32_t layerHeight)
+            : Layer(renderState, Api::Vulkan) {}
+
+    virtual ~VkLayer() {}
+
+    uint32_t getWidth() const override {
+        return mWidth;
+    }
+
+    uint32_t getHeight() const override {
+        return mHeight;
+    }
+
+    void setSize(uint32_t width, uint32_t height) override {
+        mWidth = width;
+        mHeight = height;
+    }
+
+    void setBlend(bool blend) override {
+        mBlend = blend;
+    }
+
+    bool isBlend() const override {
+        return mBlend;
+    }
+
+    sk_sp<SkImage> getImage() {
+        return mImage;
+    }
+
+    void updateTexture();
+
+    // If we've destroyed the vulkan context (VkInstance, VkDevice, etc.), we must make sure to
+    // destroy any VkImages that were made with that context.
+    void onVkContextDestroyed();
+
+private:
+    int mWidth;
+    int mHeight;
+    bool mBlend;
+
+   sk_sp<SkImage> mImage;
+
+}; // struct VkLayer
+
+}; // namespace uirenderer
+}; // namespace android
diff --git a/libs/hwui/hwui/MinikinSkia.cpp b/libs/hwui/hwui/MinikinSkia.cpp
index f172473..956f66e 100644
--- a/libs/hwui/hwui/MinikinSkia.cpp
+++ b/libs/hwui/hwui/MinikinSkia.cpp
@@ -16,9 +16,10 @@
 
 #include "MinikinSkia.h"
 
+#include <log/log.h>
+
 #include <SkPaint.h>
 #include <SkTypeface.h>
-#include <cutils/log.h>
 
 namespace android {
 
diff --git a/libs/hwui/hwui/MinikinUtils.cpp b/libs/hwui/hwui/MinikinUtils.cpp
index 8dd165c..713e509 100644
--- a/libs/hwui/hwui/MinikinUtils.cpp
+++ b/libs/hwui/hwui/MinikinUtils.cpp
@@ -13,15 +13,17 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 #include "MinikinUtils.h"
 
+#include <string>
+
+#include <log/log.h>
+
 #include "Paint.h"
 #include "SkPathMeasure.h"
 #include "Typeface.h"
 
-#include <cutils/log.h>
-#include <string>
-
 namespace android {
 
 minikin::FontStyle MinikinUtils::prepareMinikinPaint(minikin::MinikinPaint* minikinPaint,
diff --git a/libs/hwui/pipeline/skia/GLFunctorDrawable.cpp b/libs/hwui/pipeline/skia/GLFunctorDrawable.cpp
index fb2134c..419c8a9 100644
--- a/libs/hwui/pipeline/skia/GLFunctorDrawable.cpp
+++ b/libs/hwui/pipeline/skia/GLFunctorDrawable.cpp
@@ -52,6 +52,11 @@
 
     canvas->flush();
 
+    if (Properties::getRenderPipelineType() == RenderPipelineType::SkiaVulkan) {
+        canvas->clear(SK_ColorRED);
+        return;
+    }
+
     SkImageInfo canvasInfo = canvas->imageInfo();
     SkMatrix44 mat4(canvas->getTotalMatrix());
 
diff --git a/libs/hwui/pipeline/skia/LayerDrawable.cpp b/libs/hwui/pipeline/skia/LayerDrawable.cpp
index f2af4a8..2ebfbcc 100644
--- a/libs/hwui/pipeline/skia/LayerDrawable.cpp
+++ b/libs/hwui/pipeline/skia/LayerDrawable.cpp
@@ -14,8 +14,12 @@
  * limitations under the License.
  */
 
+#include "GlLayer.h"
 #include "LayerDrawable.h"
+#include "VkLayer.h"
+
 #include "SkColorFilter.h"
+#include "SkSurface.h"
 #include "gl/GrGLTypes.h"
 
 namespace android {
@@ -35,16 +39,27 @@
         layer->getTransform().copyTo(transform);
         canvas->concat(transform);
     }
-    GrGLTextureInfo externalTexture;
-    externalTexture.fTarget = layer->getRenderTarget();
-    externalTexture.fID = layer->getTextureId();
-    GrBackendTextureDesc textureDescription;
-    textureDescription.fWidth = layer->getWidth();
-    textureDescription.fHeight = layer->getHeight();
-    textureDescription.fConfig = kRGBA_8888_GrPixelConfig;
-    textureDescription.fOrigin = kTopLeft_GrSurfaceOrigin;
-    textureDescription.fTextureHandle = reinterpret_cast<GrBackendObject>(&externalTexture);
-    sk_sp<SkImage> layerImage = SkImage::MakeFromTexture(context, textureDescription);
+
+    sk_sp<SkImage> layerImage;
+    if (layer->getApi() == Layer::Api::OpenGL) {
+        GlLayer* glLayer = static_cast<GlLayer*>(layer);
+        GrGLTextureInfo externalTexture;
+        externalTexture.fTarget = glLayer->getRenderTarget();
+        externalTexture.fID = glLayer->getTextureId();
+        GrBackendTextureDesc textureDescription;
+        textureDescription.fWidth = glLayer->getWidth();
+        textureDescription.fHeight = glLayer->getHeight();
+        textureDescription.fConfig = kRGBA_8888_GrPixelConfig;
+        textureDescription.fOrigin = kTopLeft_GrSurfaceOrigin;
+        textureDescription.fTextureHandle = reinterpret_cast<GrBackendObject>(&externalTexture);
+        layerImage = SkImage::MakeFromTexture(context, textureDescription);
+    } else {
+        SkASSERT(layer->getApi() == Layer::Api::Vulkan);
+        VkLayer* vkLayer = static_cast<VkLayer*>(layer);
+        canvas->clear(SK_ColorGREEN);
+        layerImage = vkLayer->getImage();
+    }
+
     if (layerImage) {
         SkPaint paint;
         paint.setAlpha(layer->getAlpha());
diff --git a/libs/hwui/pipeline/skia/SkiaOpenGLPipeline.cpp b/libs/hwui/pipeline/skia/SkiaOpenGLPipeline.cpp
index c8258f7..65a1dc3 100644
--- a/libs/hwui/pipeline/skia/SkiaOpenGLPipeline.cpp
+++ b/libs/hwui/pipeline/skia/SkiaOpenGLPipeline.cpp
@@ -17,6 +17,7 @@
 #include "SkiaOpenGLPipeline.h"
 
 #include "DeferredLayerUpdater.h"
+#include "GlLayer.h"
 #include "LayerDrawable.h"
 #include "renderthread/EglManager.h"
 #include "renderthread/Frame.h"
@@ -136,7 +137,7 @@
 
 DeferredLayerUpdater* SkiaOpenGLPipeline::createTextureLayer() {
     mEglManager.initialize();
-    Layer* layer = new Layer(mRenderThread.renderState(), 0, 0);
+    GlLayer* layer = new GlLayer(mRenderThread.renderState(), 0, 0);
     layer->generateTexture();
     return new DeferredLayerUpdater(layer);
 }
diff --git a/libs/hwui/pipeline/skia/SkiaVulkanPipeline.cpp b/libs/hwui/pipeline/skia/SkiaVulkanPipeline.cpp
index 0d3f4ef..910c339 100644
--- a/libs/hwui/pipeline/skia/SkiaVulkanPipeline.cpp
+++ b/libs/hwui/pipeline/skia/SkiaVulkanPipeline.cpp
@@ -22,6 +22,7 @@
 #include "renderstate/RenderState.h"
 #include "SkiaPipeline.h"
 #include "SkiaProfileRenderer.h"
+#include "VkLayer.h"
 
 #include <SkSurface.h>
 #include <SkTypes.h>
@@ -119,7 +120,8 @@
 
 DeferredLayerUpdater* SkiaVulkanPipeline::createTextureLayer() {
     mVkManager.initialize();
-    Layer* layer = new Layer(mRenderThread.renderState(), 0, 0);
+
+    VkLayer* layer = new VkLayer(mRenderThread.renderState(), 0, 0);
     return new DeferredLayerUpdater(layer);
 }
 
diff --git a/libs/hwui/renderstate/RenderState.cpp b/libs/hwui/renderstate/RenderState.cpp
index 72af7c9..17ee390 100644
--- a/libs/hwui/renderstate/RenderState.cpp
+++ b/libs/hwui/renderstate/RenderState.cpp
@@ -13,6 +13,8 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+#include "GlLayer.h"
+#include "VkLayer.h"
 #include <GpuMemoryTracker.h>
 #include "renderstate/RenderState.h"
 
@@ -40,7 +42,7 @@
 void RenderState::onGLContextCreated() {
     LOG_ALWAYS_FATAL_IF(mBlend || mMeshState || mScissor || mStencil,
             "State object lifecycle not managed correctly");
-    GpuMemoryTracker::onGLContextCreated();
+    GpuMemoryTracker::onGpuContextCreated();
 
     mBlend = new Blend();
     mMeshState = new MeshState();
@@ -55,7 +57,9 @@
 }
 
 static void layerLostGlContext(Layer* layer) {
-    layer->onGlContextLost();
+    LOG_ALWAYS_FATAL_IF(layer->getApi() != Layer::Api::OpenGL,
+            "layerLostGlContext on non GL layer");
+    static_cast<GlLayer*>(layer)->onGlContextLost();
 }
 
 void RenderState::onGLContextDestroyed() {
@@ -75,7 +79,29 @@
     delete mStencil;
     mStencil = nullptr;
 
-    GpuMemoryTracker::onGLContextDestroyed();
+    GpuMemoryTracker::onGpuContextDestroyed();
+}
+
+void RenderState::onVkContextCreated() {
+    LOG_ALWAYS_FATAL_IF(mBlend || mMeshState || mScissor || mStencil,
+            "State object lifecycle not managed correctly");
+    GpuMemoryTracker::onGpuContextCreated();
+}
+
+static void layerDestroyedVkContext(Layer* layer) {
+    LOG_ALWAYS_FATAL_IF(layer->getApi() != Layer::Api::Vulkan,
+                        "layerLostVkContext on non Vulkan layer");
+    static_cast<VkLayer*>(layer)->onVkContextDestroyed();
+}
+
+void RenderState::onVkContextDestroyed() {
+    mLayerPool.clear();
+    std::for_each(mActiveLayers.begin(), mActiveLayers.end(), layerDestroyedVkContext);
+    GpuMemoryTracker::onGpuContextDestroyed();
+}
+
+GrContext* RenderState::getGrContext() const {
+    return mRenderThread.getGrContext();
 }
 
 void RenderState::flush(Caches::FlushMode mode) {
diff --git a/libs/hwui/renderstate/RenderState.h b/libs/hwui/renderstate/RenderState.h
index 3d119dc..d183a15 100644
--- a/libs/hwui/renderstate/RenderState.h
+++ b/libs/hwui/renderstate/RenderState.h
@@ -35,6 +35,8 @@
 #include <utils/RefBase.h>
 #include <private/hwui/DrawGlInfo.h>
 
+class GrContext;
+
 namespace android {
 namespace uirenderer {
 
@@ -56,6 +58,9 @@
     void onGLContextCreated();
     void onGLContextDestroyed();
 
+    void onVkContextCreated();
+    void onVkContextDestroyed();
+
     void flush(Caches::FlushMode flushMode);
 
     void setViewport(GLsizei width, GLsizei height);
@@ -98,6 +103,8 @@
 
     OffscreenBufferPool& layerPool() { return mLayerPool; }
 
+    GrContext* getGrContext() const;
+
     void dump();
 
 private:
diff --git a/libs/hwui/renderthread/OpenGLPipeline.cpp b/libs/hwui/renderthread/OpenGLPipeline.cpp
index df08599..df40a44 100644
--- a/libs/hwui/renderthread/OpenGLPipeline.cpp
+++ b/libs/hwui/renderthread/OpenGLPipeline.cpp
@@ -19,6 +19,7 @@
 #include "DeferredLayerUpdater.h"
 #include "EglManager.h"
 #include "Frame.h"
+#include "GlLayer.h"
 #include "ProfileRenderer.h"
 #include "renderstate/RenderState.h"
 #include "OpenGLReadback.h"
@@ -120,12 +121,13 @@
 bool OpenGLPipeline::copyLayerInto(DeferredLayerUpdater* layer, SkBitmap* bitmap) {
     ATRACE_CALL();
     layer->apply();
-    return OpenGLReadbackImpl::copyLayerInto(mRenderThread, *(layer->backingLayer()), bitmap);
+    return OpenGLReadbackImpl::copyLayerInto(mRenderThread,
+            static_cast<GlLayer&>(*layer->backingLayer()), bitmap);
 }
 
 DeferredLayerUpdater* OpenGLPipeline::createTextureLayer() {
     mEglManager.initialize();
-    Layer* layer = new Layer(mRenderThread.renderState(), 0, 0);
+    GlLayer* layer = new GlLayer(mRenderThread.renderState(), 0, 0);
     Caches::getInstance().textureState().activateTexture(0);
     layer->generateTexture();
 
diff --git a/libs/hwui/renderthread/VulkanManager.cpp b/libs/hwui/renderthread/VulkanManager.cpp
index 68c04af..2b90744 100644
--- a/libs/hwui/renderthread/VulkanManager.cpp
+++ b/libs/hwui/renderthread/VulkanManager.cpp
@@ -19,6 +19,7 @@
 #include "DeviceInfo.h"
 #include "Properties.h"
 #include "RenderThread.h"
+#include "renderstate/RenderState.h"
 
 #include <GrContext.h>
 #include <GrTypes.h>
@@ -37,10 +38,14 @@
 void VulkanManager::destroy() {
     if (!hasVkContext()) return;
 
+    mRenderThread.renderState().onVkContextDestroyed();
+    mRenderThread.setGrContext(nullptr);
+
     if (VK_NULL_HANDLE != mCommandPool) {
         mDestroyCommandPool(mBackendContext->fDevice, mCommandPool, nullptr);
         mCommandPool = VK_NULL_HANDLE;
     }
+    mBackendContext.reset();
 }
 
 void VulkanManager::initialize() {
@@ -105,6 +110,8 @@
     if (Properties::enablePartialUpdates && Properties::useBufferAge) {
         mSwapBehavior = SwapBehavior::BufferAge;
     }
+
+    mRenderThread.renderState().onVkContextCreated();
 }
 
 // Returns the next BackbufferInfo to use for the next draw. The function will make sure all
@@ -156,6 +163,9 @@
         if (!createSwapchain(surface)) {
             return nullptr;
         }
+        backbuffer = getAvailableBackbuffer(surface);
+        res = mResetFences(mBackendContext->fDevice, 2, backbuffer->mUsageFences);
+        SkASSERT(VK_SUCCESS == res);
 
         // acquire the image
         res = mAcquireNextImageKHR(mBackendContext->fDevice, surface->mSwapchain, UINT64_MAX,
diff --git a/libs/hwui/tests/unit/DeferredLayerUpdaterTests.cpp b/libs/hwui/tests/unit/DeferredLayerUpdaterTests.cpp
index 0326aa9..f1b8882 100644
--- a/libs/hwui/tests/unit/DeferredLayerUpdaterTests.cpp
+++ b/libs/hwui/tests/unit/DeferredLayerUpdaterTests.cpp
@@ -15,6 +15,7 @@
  */
 
 #include "DeferredLayerUpdater.h"
+#include "GlLayer.h"
 
 #include "renderthread/OpenGLPipeline.h"
 #include "tests/common/TestUtils.h"
@@ -32,7 +33,10 @@
 
 
     // updates are deferred so the backing layer should still be in its default state
-    EXPECT_EQ((uint32_t)GL_NONE, layerUpdater->backingLayer()->getRenderTarget());
+    if (layerUpdater->backingLayer()->getApi() == Layer::Api::OpenGL) {
+        GlLayer* glLayer = static_cast<GlLayer*>(layerUpdater->backingLayer());
+        EXPECT_EQ((uint32_t)GL_NONE, glLayer->getRenderTarget());
+    }
     EXPECT_EQ(0u, layerUpdater->backingLayer()->getWidth());
     EXPECT_EQ(0u, layerUpdater->backingLayer()->getHeight());
     EXPECT_FALSE(layerUpdater->backingLayer()->getForceFilter());
@@ -45,7 +49,10 @@
     layerUpdater->updateLayer(true, GL_TEXTURE_EXTERNAL_OES, scaledMatrix.data);
 
     // the backing layer should now have all the properties applied.
-    EXPECT_EQ((uint32_t)GL_TEXTURE_EXTERNAL_OES, layerUpdater->backingLayer()->getRenderTarget());
+    if (layerUpdater->backingLayer()->getApi() == Layer::Api::OpenGL) {
+        GlLayer* glLayer = static_cast<GlLayer*>(layerUpdater->backingLayer());
+        EXPECT_EQ((uint32_t)GL_TEXTURE_EXTERNAL_OES, glLayer->getRenderTarget());
+    }
     EXPECT_EQ(100u, layerUpdater->backingLayer()->getWidth());
     EXPECT_EQ(100u, layerUpdater->backingLayer()->getHeight());
     EXPECT_TRUE(layerUpdater->backingLayer()->getForceFilter());
diff --git a/libs/hwui/tests/unit/FrameBuilderTests.cpp b/libs/hwui/tests/unit/FrameBuilderTests.cpp
index 21394ae..71c7516 100644
--- a/libs/hwui/tests/unit/FrameBuilderTests.cpp
+++ b/libs/hwui/tests/unit/FrameBuilderTests.cpp
@@ -19,6 +19,7 @@
 #include <BakedOpState.h>
 #include <DeferredLayerUpdater.h>
 #include <FrameBuilder.h>
+#include <GlLayer.h>
 #include <LayerUpdateQueue.h>
 #include <RecordedOp.h>
 #include <RecordingCanvas.h>
@@ -698,7 +699,10 @@
 RENDERTHREAD_TEST(FrameBuilder, textureLayer_reject) {
     auto layerUpdater = TestUtils::createTextureLayerUpdater(renderThread, 100, 100,
             SkMatrix::MakeTrans(5, 5));
-    layerUpdater->backingLayer()->setRenderTarget(GL_NONE); // Should be rejected
+    if (layerUpdater->backingLayer()->getApi() != Layer::Api::OpenGL) return;
+
+    GlLayer* glLayer = static_cast<GlLayer*>(layerUpdater->backingLayer());
+    glLayer->setRenderTarget(GL_NONE); // Should be rejected
 
     auto node = TestUtils::createNode<RecordingCanvas>(0, 0, 200, 200,
             [&layerUpdater](RenderProperties& props, RecordingCanvas& canvas) {
diff --git a/libs/hwui/tests/unit/GpuMemoryTrackerTests.cpp b/libs/hwui/tests/unit/GpuMemoryTrackerTests.cpp
index aa1dcb2..8cbd24e 100644
--- a/libs/hwui/tests/unit/GpuMemoryTrackerTests.cpp
+++ b/libs/hwui/tests/unit/GpuMemoryTrackerTests.cpp
@@ -51,7 +51,7 @@
 TEST(GpuMemoryTracker, sizeCheck) {
     destroyEglContext();
 
-    GpuMemoryTracker::onGLContextCreated();
+    GpuMemoryTracker::onGpuContextCreated();
     ASSERT_EQ(0, GpuMemoryTracker::getTotalSize(GpuObjectType::Texture));
     ASSERT_EQ(0, GpuMemoryTracker::getInstanceCount(GpuObjectType::Texture));
     {
@@ -66,5 +66,5 @@
     }
     ASSERT_EQ(0, GpuMemoryTracker::getTotalSize(GpuObjectType::Texture));
     ASSERT_EQ(0, GpuMemoryTracker::getInstanceCount(GpuObjectType::Texture));
-    GpuMemoryTracker::onGLContextDestroyed();
+    GpuMemoryTracker::onGpuContextDestroyed();
 }
diff --git a/libs/hwui/utils/GLUtils.h b/libs/hwui/utils/GLUtils.h
index 94818b2..c127478 100644
--- a/libs/hwui/utils/GLUtils.h
+++ b/libs/hwui/utils/GLUtils.h
@@ -18,7 +18,7 @@
 
 #include "Debug.h"
 
-#include <cutils/log.h>
+#include <log/log.h>
 
 namespace android {
 namespace uirenderer {
diff --git a/libs/input/PointerController.cpp b/libs/input/PointerController.cpp
index 0b22ad5..7c60467 100644
--- a/libs/input/PointerController.cpp
+++ b/libs/input/PointerController.cpp
@@ -15,7 +15,6 @@
  */
 
 #define LOG_TAG "PointerController"
-
 //#define LOG_NDEBUG 0
 
 // Log debug messages about pointer updates
@@ -23,8 +22,9 @@
 
 #include "PointerController.h"
 
-#include <cutils/log.h>
+#include <log/log.h>
 
+// ToDo: Fix code to be warning free
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunused-parameter"
 #include <SkBitmap.h>
diff --git a/libs/input/SpriteController.cpp b/libs/input/SpriteController.cpp
index 18ebd47..4991f04 100644
--- a/libs/input/SpriteController.cpp
+++ b/libs/input/SpriteController.cpp
@@ -15,15 +15,15 @@
  */
 
 #define LOG_TAG "Sprites"
-
 //#define LOG_NDEBUG 0
 
 #include "SpriteController.h"
 
-#include <cutils/log.h>
+#include <log/log.h>
 #include <utils/String8.h>
 #include <gui/Surface.h>
 
+// ToDo: Fix code to be warning free
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunused-parameter"
 #include <SkBitmap.h>
diff --git a/media/mca/filterpacks/native/base/geometry.cpp b/media/mca/filterpacks/native/base/geometry.cpp
index 7812d502..44b13e4 100644
--- a/media/mca/filterpacks/native/base/geometry.cpp
+++ b/media/mca/filterpacks/native/base/geometry.cpp
@@ -13,10 +13,12 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+#define LOG_TAG "geometry"
 
-#include <cutils/log.h>
 #include <cmath>
 
+#include <log/log.h>
+
 #include "geometry.h"
 
 namespace android {
diff --git a/media/mca/filterpacks/native/base/time_util.cpp b/media/mca/filterpacks/native/base/time_util.cpp
index 1a78a95..7d383df 100644
--- a/media/mca/filterpacks/native/base/time_util.cpp
+++ b/media/mca/filterpacks/native/base/time_util.cpp
@@ -13,14 +13,16 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+#define LOG_TAG "time_util"
 
 #include "time_util.h"
 #include "utilities.h"
 
-#include <cutils/log.h>
 #include <sys/time.h>
 #include <map>
 
+#include <log/log.h>
+
 namespace android {
 namespace filterfw {
 
diff --git a/packages/SystemUI/AndroidManifest.xml b/packages/SystemUI/AndroidManifest.xml
index 5574753..62f6136 100644
--- a/packages/SystemUI/AndroidManifest.xml
+++ b/packages/SystemUI/AndroidManifest.xml
@@ -483,6 +483,21 @@
             android:exported="true"
             android:enabled="@bool/config_enableKeyguardService" />
 
+        <activity android:name=".keyguard.WorkLockActivity"
+                  android:label="@string/accessibility_desc_work_lock"
+                  android:permission="android.permission.MANAGE_USERS"
+                  android:exported="false"
+                  android:launchMode="singleTop"
+                  android:excludeFromRecents="true"
+                  android:stateNotNeeded="true"
+                  android:resumeWhilePausing="true"
+                  android:theme="@android:style/Theme.Black.NoTitleBar">
+            <intent-filter>
+                <action android:name="android.app.action.CONFIRM_DEVICE_CREDENTIAL_WITH_USER" />
+                <category android:name="android.intent.category.DEFAULT" />
+            </intent-filter>
+        </activity>
+
         <activity android:name=".Somnambulator"
             android:label="@string/start_dreams"
             android:icon="@mipmap/ic_launcher_dreams"
diff --git a/packages/SystemUI/res/layout/qs_customize_panel_content.xml b/packages/SystemUI/res/layout/qs_customize_panel_content.xml
index ca0248e..04d0e65 100644
--- a/packages/SystemUI/res/layout/qs_customize_panel_content.xml
+++ b/packages/SystemUI/res/layout/qs_customize_panel_content.xml
@@ -27,7 +27,7 @@
 
     <android.support.v7.widget.RecyclerView
         android:id="@android:id/list"
-        android:layout_width="@dimen/notification_panel_width"
+        android:layout_width="match_parent"
         android:layout_height="0dp"
         android:layout_weight="1"
         android:scrollIndicators="top"
diff --git a/packages/SystemUI/res/values/strings.xml b/packages/SystemUI/res/values/strings.xml
index 34a0397..05963ac 100644
--- a/packages/SystemUI/res/values/strings.xml
+++ b/packages/SystemUI/res/values/strings.xml
@@ -460,6 +460,8 @@
     <string name="accessibility_desc_settings">Settings</string>
     <!-- Content description for the recent apps panel (not shown on the screen). [CHAR LIMIT=NONE] -->
     <string name="accessibility_desc_recent_apps">Overview.</string>
+    <!-- Content description for the graphic shown instead of an activity window while the activity is locked (not shown on the screen). [CHAR LIMIT=NONE] -->
+    <string name="accessibility_desc_work_lock">Work lock screen</string>
     <!-- Content description for the close button in the zen mode panel introduction message. [CHAR LIMIT=NONE] -->
     <string name="accessibility_desc_close">Close</string>
 
diff --git a/packages/SystemUI/src/com/android/systemui/keyguard/KeyguardViewMediator.java b/packages/SystemUI/src/com/android/systemui/keyguard/KeyguardViewMediator.java
index 8e5db97..ce89aab 100644
--- a/packages/SystemUI/src/com/android/systemui/keyguard/KeyguardViewMediator.java
+++ b/packages/SystemUI/src/com/android/systemui/keyguard/KeyguardViewMediator.java
@@ -326,6 +326,12 @@
      */
     private boolean mPendingLock;
 
+    /**
+     * Controller for showing individual "work challenge" lock screen windows inside managed profile
+     * tasks when the current user has been unlocked but the profile is still locked.
+     */
+    private WorkLockActivityController mWorkLockController;
+
     private boolean mLockLater;
 
     private boolean mWakeAndUnlocking;
@@ -708,6 +714,8 @@
 
         mHideAnimation = AnimationUtils.loadAnimation(mContext,
                 com.android.internal.R.anim.lock_screen_behind_enter);
+
+        mWorkLockController = new WorkLockActivityController(mContext);
     }
 
     @Override
diff --git a/packages/SystemUI/src/com/android/systemui/keyguard/WorkLockActivity.java b/packages/SystemUI/src/com/android/systemui/keyguard/WorkLockActivity.java
new file mode 100644
index 0000000..12cf6fa
--- /dev/null
+++ b/packages/SystemUI/src/com/android/systemui/keyguard/WorkLockActivity.java
@@ -0,0 +1,159 @@
+/*
+ * 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.systemui.keyguard;
+
+import static android.app.ActivityManager.TaskDescription;
+
+import android.annotation.ColorInt;
+import android.annotation.UserIdInt;
+import android.app.Activity;
+import android.app.ActivityManager;
+import android.app.ActivityOptions;
+import android.app.KeyguardManager;
+import android.app.PendingIntent;
+import android.app.admin.DevicePolicyManager;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.graphics.Color;
+import android.os.Bundle;
+import android.os.RemoteException;
+import android.os.UserHandle;
+import android.util.Log;
+import android.view.View;
+
+/**
+ * Bouncer between work activities and the activity used to confirm credentials before unlocking
+ * a managed profile.
+ * <p>
+ * Shows a solid color when started, based on the organization color of the user it is supposed to
+ * be blocking. Once focused, it switches to a screen to confirm credentials and auto-dismisses if
+ * credentials are accepted.
+ */
+public class WorkLockActivity extends Activity {
+    private static final String TAG = "WorkLockActivity";
+
+    /**
+     * ID of the locked user that this activity blocks access to.
+     */
+    @UserIdInt
+    private int mUserId;
+
+    /**
+     * {@see KeyguardManager}
+     */
+    private KeyguardManager mKgm;
+
+    /**
+     * {@see DevicePolicyManager}
+     */
+    private DevicePolicyManager mDpm;
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        mUserId = getIntent().getIntExtra(Intent.EXTRA_USER_ID, UserHandle.myUserId());
+        mDpm = (DevicePolicyManager) getSystemService(Context.DEVICE_POLICY_SERVICE);
+        mKgm = (KeyguardManager) getSystemService(Context.KEYGUARD_SERVICE);
+
+        final IntentFilter lockFilter = new IntentFilter();
+        lockFilter.addAction(Intent.ACTION_DEVICE_LOCKED_CHANGED);
+        registerReceiverAsUser(mLockEventReceiver, UserHandle.ALL, lockFilter,
+                /* permission */ null, /* scheduler */ null);
+
+        // Once the receiver is registered, check whether anything happened between now and the time
+        // when this activity was launched. If it did and the user is unlocked now, just quit.
+        if (!mKgm.isDeviceLocked(mUserId)) {
+            finish();
+            return;
+        }
+
+        // Get the organization color; this is a 24-bit integer provided by a DPC, guaranteed to
+        // be completely opaque.
+        final @ColorInt int color = mDpm.getOrganizationColorForUser(mUserId);
+
+        // Draw captions overlaid on the content view, so the whole window is one solid color.
+        setOverlayWithDecorCaptionEnabled(true);
+
+        // Match task description to the task stack we are replacing so it's still recognizably the
+        // original task stack with the same icon and title text.
+        setTaskDescription(new TaskDescription(null, null, color));
+
+        // Blank out the activity. When it is on-screen it will look like a Recents thumbnail with
+        // redaction switched on.
+        final View blankView = new View(this);
+        blankView.setBackgroundColor(color);
+        setContentView(blankView);
+
+        // Respond to input events by showing the prompt to confirm credentials.
+        blankView.setOnClickListener((View v) -> {
+            showConfirmCredentialActivity();
+        });
+    }
+
+    @Override
+    public void onDestroy() {
+        unregisterReceiver(mLockEventReceiver);
+        super.onDestroy();
+    }
+
+    @Override
+    public void onBackPressed() {
+        // Ignore back presses.
+        return;
+    }
+
+    private final BroadcastReceiver mLockEventReceiver = new BroadcastReceiver() {
+        @Override
+        public void onReceive(Context context, Intent intent) {
+            final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, mUserId);
+            if (userId == mUserId && !mKgm.isDeviceLocked(mUserId)) {
+                finish();
+            }
+        }
+    };
+
+    private void showConfirmCredentialActivity() {
+        if (isFinishing() || !mKgm.isDeviceLocked(mUserId)) {
+            // Don't show the confirm credentials screen if we are already unlocked / unlocking.
+            return;
+        }
+
+        final Intent credential = mKgm.createConfirmDeviceCredentialIntent(null, null, mUserId);
+        if (credential == null) {
+            return;
+        }
+
+        final ActivityOptions options = ActivityOptions.makeBasic();
+        options.setLaunchTaskId(getTaskId());
+
+        // Bring this activity back to the foreground after confirming credentials.
+        final PendingIntent target = PendingIntent.getActivity(this, /* request */ -1, getIntent(),
+                PendingIntent.FLAG_CANCEL_CURRENT |
+                PendingIntent.FLAG_ONE_SHOT |
+                PendingIntent.FLAG_IMMUTABLE, options.toBundle());
+
+        credential.putExtra(Intent.EXTRA_INTENT, target.getIntentSender());
+        try {
+            ActivityManager.getService().startConfirmDeviceCredentialIntent(credential);
+        } catch (RemoteException e) {
+            Log.e(TAG, "Failed to start confirm credential intent", e);
+        }
+    }
+}
diff --git a/packages/SystemUI/src/com/android/systemui/keyguard/WorkLockActivityController.java b/packages/SystemUI/src/com/android/systemui/keyguard/WorkLockActivityController.java
new file mode 100644
index 0000000..22fceff
--- /dev/null
+++ b/packages/SystemUI/src/com/android/systemui/keyguard/WorkLockActivityController.java
@@ -0,0 +1,61 @@
+/*
+ * 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.systemui.keyguard;
+
+import android.app.Activity;
+import android.app.ActivityOptions;
+import android.app.KeyguardManager;
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.Intent;
+import android.os.Bundle;
+import android.os.UserHandle;
+
+import com.android.systemui.recents.events.EventBus;
+import com.android.systemui.recents.misc.SystemServicesProxy;
+import com.android.systemui.recents.misc.SystemServicesProxy.TaskStackListener;
+
+public class WorkLockActivityController {
+    private final Context mContext;
+
+    public WorkLockActivityController(Context context) {
+        mContext = context;
+        EventBus.getDefault().register(this);
+        SystemServicesProxy.getInstance(context).registerTaskStackListener(mLockListener);
+    }
+
+    private void startWorkChallengeInTask(int taskId, int userId) {
+        Intent intent = new Intent(KeyguardManager.ACTION_CONFIRM_DEVICE_CREDENTIAL_WITH_USER)
+                .setComponent(new ComponentName(mContext, WorkLockActivity.class))
+                .putExtra(Intent.EXTRA_USER_ID, userId)
+                .addFlags(Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS
+                        | Intent.FLAG_ACTIVITY_REORDER_TO_FRONT
+                        | Intent.FLAG_ACTIVITY_SINGLE_TOP);
+
+        final ActivityOptions options = ActivityOptions.makeBasic();
+        options.setLaunchTaskId(taskId);
+        options.setTaskOverlay(true);
+        mContext.startActivityAsUser(intent, options.toBundle(), UserHandle.CURRENT);
+    }
+
+    private final TaskStackListener mLockListener = new TaskStackListener() {
+        @Override
+        public void onTaskProfileLocked(int taskId, int userId) {
+            startWorkChallengeInTask(taskId, userId);
+        }
+    };
+}
diff --git a/packages/SystemUI/src/com/android/systemui/recents/misc/SystemServicesProxy.java b/packages/SystemUI/src/com/android/systemui/recents/misc/SystemServicesProxy.java
index 2ba408e..7791132 100644
--- a/packages/SystemUI/src/com/android/systemui/recents/misc/SystemServicesProxy.java
+++ b/packages/SystemUI/src/com/android/systemui/recents/misc/SystemServicesProxy.java
@@ -154,6 +154,7 @@
         public void onPinnedStackAnimationEnded() { }
         public void onActivityForcedResizable(String packageName, int taskId) { }
         public void onActivityDismissingDockedStack() { }
+        public void onTaskProfileLocked(int taskId, int userId) { }
     }
 
     /**
@@ -197,6 +198,11 @@
         public void onActivityDismissingDockedStack() throws RemoteException {
             mHandler.sendEmptyMessage(H.ON_ACTIVITY_DISMISSING_DOCKED_STACK);
         }
+
+        @Override
+        public void onTaskProfileLocked(int taskId, int userId) {
+            mHandler.obtainMessage(H.ON_TASK_PROFILE_LOCKED, taskId, userId).sendToTarget();
+        }
     };
 
     /**
@@ -1155,6 +1161,7 @@
         private static final int ON_PINNED_STACK_ANIMATION_ENDED = 4;
         private static final int ON_ACTIVITY_FORCED_RESIZABLE = 5;
         private static final int ON_ACTIVITY_DISMISSING_DOCKED_STACK = 6;
+        private static final int ON_TASK_PROFILE_LOCKED = 7;
 
         @Override
         public void handleMessage(Message msg) {
@@ -1196,6 +1203,12 @@
                     }
                     break;
                 }
+                case ON_TASK_PROFILE_LOCKED: {
+                    for (int i = mTaskStackListeners.size() - 1; i >= 0; i--) {
+                        mTaskStackListeners.get(i).onTaskProfileLocked(msg.arg1, msg.arg2);
+                    }
+                    break;
+                }
             }
         }
     }
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/NotificationGuts.java b/packages/SystemUI/src/com/android/systemui/statusbar/NotificationGuts.java
index 088f538..c7adb60 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/NotificationGuts.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/NotificationGuts.java
@@ -313,7 +313,7 @@
         } else if (mHighImportanceButton.isChecked()) {
             return NotificationManager.IMPORTANCE_HIGH;
         } else {
-            return NotificationManager.IMPORTANCE_NONE;
+            return NotificationManager.IMPORTANCE_UNSPECIFIED;
         }
     }
 
@@ -333,10 +333,10 @@
 
         // Set to current importance setting
         switch (importance) {
+            case NotificationManager.IMPORTANCE_UNSPECIFIED:
             case NotificationManager.IMPORTANCE_NONE:
                 break;
             case NotificationManager.IMPORTANCE_MIN:
-            case NotificationManager.IMPORTANCE_UNSPECIFIED:
                 mMinImportanceButton.setChecked(true);
                 break;
             case NotificationManager.IMPORTANCE_LOW:
diff --git a/packages/SystemUI/tests/src/com/android/systemui/statusbar/NotificationGutsTest.java b/packages/SystemUI/tests/src/com/android/systemui/statusbar/NotificationGutsTest.java
index 2cd6dbd..c65f7150 100644
--- a/packages/SystemUI/tests/src/com/android/systemui/statusbar/NotificationGutsTest.java
+++ b/packages/SystemUI/tests/src/com/android/systemui/statusbar/NotificationGutsTest.java
@@ -210,6 +210,18 @@
 
     @Test
     @UiThreadTest
+    public void testCloseControls_DoesNotUpdateNotificationChannelIfUnspecified() throws Exception {
+        mNotificationChannel.setImportance(NotificationManager.IMPORTANCE_UNSPECIFIED);
+        mNotificationGuts.bindNotification(mMockPackageManager, mMockINotificationManager,
+                mMockStatusBarNotification, null, null, null);
+
+        mNotificationGuts.closeControls(-1, -1, true);
+        verify(mMockINotificationManager, never()).updateNotificationChannelForPackage(
+                anyString(), anyInt(), any());
+    }
+
+    @Test
+    @UiThreadTest
     public void testCloseControls_CallsUpdateNotificationChannelIfChanged() throws Exception {
         mNotificationChannel.setImportance(NotificationManager.IMPORTANCE_LOW);
         mNotificationGuts.bindNotification(mMockPackageManager, mMockINotificationManager,
diff --git a/proto/src/metrics_constants.proto b/proto/src/metrics_constants.proto
index bf3620e..21139da 100644
--- a/proto/src/metrics_constants.proto
+++ b/proto/src/metrics_constants.proto
@@ -3181,6 +3181,11 @@
     // user accepted
     ACTION_SKIP_DISCLAIMER_SELECTED = 760;
 
+    // Enclosing category for group of APP_TRANSITION_FOO events,
+    // logged when we execute an app transition.
+    APP_TRANSITION = 761;
+
+
     // ---- End O Constants, all O constants go above this line ----
 
     // Add new aosp constants above this line.
diff --git a/services/core/java/com/android/server/am/ActivityManagerService.java b/services/core/java/com/android/server/am/ActivityManagerService.java
index 5b4b4fe..2c1871d 100644
--- a/services/core/java/com/android/server/am/ActivityManagerService.java
+++ b/services/core/java/com/android/server/am/ActivityManagerService.java
@@ -11875,20 +11875,20 @@
         }
 
         synchronized (this) {
-            if (mStackSupervisor.isUserLockedProfile(userId)) {
-                final long ident = Binder.clearCallingIdentity();
-                try {
+            final long ident = Binder.clearCallingIdentity();
+            try {
+                if (mUserController.shouldConfirmCredentials(userId)) {
                     final int currentUserId = mUserController.getCurrentUserIdLocked();
-                    if (mUserController.isLockScreenDisabled(currentUserId)) {
-                        // If there is no device lock, we will show the profile's credential page.
-                        mActivityStarter.showConfirmDeviceCredential(userId);
+                    if (!mKeyguardController.isKeyguardLocked()) {
+                        // If the device is not locked, we will prompt for credentials immediately.
+                        mStackSupervisor.lockAllProfileTasks(userId);
                     } else {
                         // Showing launcher to avoid user entering credential twice.
                         startHomeActivityLocked(currentUserId, "notifyLockedProfile");
                     }
-                } finally {
-                    Binder.restoreCallingIdentity(ident);
                 }
+            } finally {
+                Binder.restoreCallingIdentity(ident);
             }
         }
     }
diff --git a/services/core/java/com/android/server/am/ActivityMetricsLogger.java b/services/core/java/com/android/server/am/ActivityMetricsLogger.java
index 3f166fe..e46d204 100644
--- a/services/core/java/com/android/server/am/ActivityMetricsLogger.java
+++ b/services/core/java/com/android/server/am/ActivityMetricsLogger.java
@@ -172,7 +172,7 @@
         MetricsLogger.action(mContext, MetricsEvent.APP_TRANSITION_DEVICE_UPTIME_SECONDS,
                 (int) (SystemClock.uptimeMillis() / 1000));
 
-        LogBuilder builder = new LogBuilder();
+        LogBuilder builder = new LogBuilder(MetricsEvent.APP_TRANSITION);
         builder.addTaggedData(MetricsEvent.APP_TRANSITION_COMPONENT_NAME, componentName);
         builder.addTaggedData(MetricsEvent.APP_TRANSITION_PROCESS_RUNNING, processRunning ? 1 : 0);
         builder.addTaggedData(MetricsEvent.APP_TRANSITION_DEVICE_UPTIME_SECONDS,
diff --git a/services/core/java/com/android/server/am/ActivityStackSupervisor.java b/services/core/java/com/android/server/am/ActivityStackSupervisor.java
index a0bb192..8cf0708 100644
--- a/services/core/java/com/android/server/am/ActivityStackSupervisor.java
+++ b/services/core/java/com/android/server/am/ActivityStackSupervisor.java
@@ -764,43 +764,52 @@
     }
 
     /**
-     * TODO: Handle freefom mode.
-     * @return true when credential confirmation is needed for the user and there is any
-     *         activity started by the user in any visible stack.
+     * Detects whether we should show a lock screen in front of this task for a locked user.
+     * <p>
+     * We'll do this if either of the following holds:
+     * <ul>
+     *   <li>The top activity explicitly belongs to {@param userId}.</li>
+     *   <li>The top activity returns a result to an activity belonging to {@param userId}.</li>
+     * </ul>
+     *
+     * @return {@code true} if the top activity looks like it belongs to {@param userId}.
      */
-    boolean isUserLockedProfile(@UserIdInt int userId) {
-        if (!mService.mUserController.shouldConfirmCredentials(userId)) {
-            return false;
-        }
-        final ActivityStack fullScreenStack = getStack(FULLSCREEN_WORKSPACE_STACK_ID);
-        final ActivityStack dockedStack = getStack(DOCKED_STACK_ID);
-        final ActivityStack[] activityStacks = new ActivityStack[] {fullScreenStack, dockedStack};
-        for (final ActivityStack activityStack : activityStacks) {
-            if (activityStack == null) {
-                continue;
-            }
-            if (activityStack.topRunningActivityLocked() == null) {
-                continue;
-            }
-            if (activityStack.getStackVisibilityLocked(null) == STACK_INVISIBLE) {
-                continue;
-            }
-            if (activityStack.isDockedStack() && mIsDockMinimized) {
-                continue;
-            }
-            final TaskRecord topTask = activityStack.topTask();
-            if (topTask == null) {
-                continue;
-            }
-            // To handle the case that work app is in the task but just is not the top one.
-            for (int i = topTask.mActivities.size() - 1; i >= 0; i--) {
-                final ActivityRecord activityRecord = topTask.mActivities.get(i);
-                if (activityRecord.userId == userId) {
-                    return true;
+    private boolean taskTopActivityIsUser(TaskRecord task, @UserIdInt int userId) {
+        // To handle the case that work app is in the task but just is not the top one.
+        final ActivityRecord activityRecord = task.getTopActivity();
+        final ActivityRecord resultTo = (activityRecord != null ? activityRecord.resultTo : null);
+
+        return (activityRecord != null && activityRecord.userId == userId)
+                || (resultTo != null && resultTo.userId == userId);
+    }
+
+    /**
+     * Find all visible task stacks containing {@param userId} and intercept them with an activity
+     * to block out the contents and possibly start a credential-confirming intent.
+     *
+     * @param userId user handle for the locked managed profile.
+     */
+    void lockAllProfileTasks(@UserIdInt int userId) {
+        mWindowManager.deferSurfaceLayout();
+        try {
+            final List<ActivityStack> stacks = getStacks();
+            for (int stackNdx = stacks.size() - 1; stackNdx >= 0; stackNdx--) {
+                final List<TaskRecord> tasks = stacks.get(stackNdx).getAllTasks();
+                for (int taskNdx = tasks.size() - 1; taskNdx >= 0; taskNdx--) {
+                    final TaskRecord task = tasks.get(taskNdx);
+
+                    // Check the task for a top activity belonging to userId, or returning a result
+                    // to an activity belonging to userId. Example case: a document picker for
+                    // personal files, opened by a work app, should still get locked.
+                    if (taskTopActivityIsUser(task, userId)) {
+                        mService.mTaskChangeNotificationController.notifyTaskProfileLocked(
+                                task.taskId, userId);
+                    }
                 }
             }
+        } finally {
+            mWindowManager.continueSurfaceLayout();
         }
-        return false;
     }
 
     void setNextTaskIdForUserLocked(int taskId, int userId) {
diff --git a/services/core/java/com/android/server/am/TaskChangeNotificationController.java b/services/core/java/com/android/server/am/TaskChangeNotificationController.java
index fd248c6..fbdbb1b 100644
--- a/services/core/java/com/android/server/am/TaskChangeNotificationController.java
+++ b/services/core/java/com/android/server/am/TaskChangeNotificationController.java
@@ -39,6 +39,7 @@
     static final int NOTIFY_TASK_DESCRIPTION_CHANGED_LISTENERS_MSG = 11;
     static final int NOTIFY_ACTIVITY_REQUESTED_ORIENTATION_CHANGED_LISTENERS = 12;
     static final int NOTIFY_TASK_REMOVAL_STARTED_LISTENERS = 13;
+    static final int NOTIFY_TASK_PROFILE_LOCKED_LISTENERS_MSG = 14;
 
     // Delay in notifying task stack change listeners (in millis)
     static final int NOTIFY_TASK_STACK_CHANGE_LISTENERS_DELAY = 100;
@@ -110,6 +111,9 @@
                 case NOTIFY_ACTIVITY_DISMISSING_DOCKED_STACK_MSG:
                     forAllListeners((listener) -> listener.onActivityDismissingDockedStack());
                     break;
+                case NOTIFY_TASK_PROFILE_LOCKED_LISTENERS_MSG:
+                    forAllListeners((listener) -> listener.onTaskProfileLocked(msg.arg1, msg.arg2));
+                    break;
             }
         }
     }
@@ -228,4 +232,13 @@
         mHandler.obtainMessage(NOTIFY_TASK_REMOVAL_STARTED_LISTENERS, taskId, 0 /* unused */)
                 .sendToTarget();
     }
+
+    /**
+     * Notify listeners that the task has been put in a locked state because one or more of the
+     * activities inside it belong to a managed profile user that has been locked.
+     */
+    void notifyTaskProfileLocked(int taskId, int userId) {
+        mHandler.obtainMessage(NOTIFY_TASK_PROFILE_LOCKED_LISTENERS_MSG, taskId, userId)
+                .sendToTarget();
+    }
 }
diff --git a/services/core/java/com/android/server/fingerprint/FingerprintService.java b/services/core/java/com/android/server/fingerprint/FingerprintService.java
index 2514012..b0f67a8 100644
--- a/services/core/java/com/android/server/fingerprint/FingerprintService.java
+++ b/services/core/java/com/android/server/fingerprint/FingerprintService.java
@@ -1142,12 +1142,6 @@
                         mHandler.obtainMessage(MSG_USER_SWITCHING, newUserId, 0 /* unused */)
                                 .sendToTarget();
                     }
-
-                    @Override
-                    public void onForegroundProfileSwitch(int newProfileId) throws RemoteException {
-                        mHandler.obtainMessage(MSG_USER_SWITCHING, newProfileId, 0 /* unused */)
-                        .sendToTarget();
-                    }
                 }, TAG);
         } catch (RemoteException e) {
             Slog.w(TAG, "Failed to listen for user switching event" ,e);
diff --git a/services/core/java/com/android/server/wm/RootWindowContainer.java b/services/core/java/com/android/server/wm/RootWindowContainer.java
index 775d8a0..6ac172b 100644
--- a/services/core/java/com/android/server/wm/RootWindowContainer.java
+++ b/services/core/java/com/android/server/wm/RootWindowContainer.java
@@ -322,7 +322,7 @@
         if (!configChanged) {
             return null;
         }
-        displayContent.onOverrideConfigurationChanged(currentConfig);
+        displayContent.onOverrideConfigurationChanged(newConfiguration);
 
         if (displayId == DEFAULT_DISPLAY) {
             // Override configuration of the default display duplicates global config. In this case
diff --git a/services/core/jni/com_android_server_connectivity_Vpn.cpp b/services/core/jni/com_android_server_connectivity_Vpn.cpp
index c54d732..4d85d9a 100644
--- a/services/core/jni/com_android_server_connectivity_Vpn.cpp
+++ b/services/core/jni/com_android_server_connectivity_Vpn.cpp
@@ -17,24 +17,25 @@
 #define LOG_NDEBUG 0
 
 #define LOG_TAG "VpnJni"
-#include <cutils/log.h>
-#include "netutils/ifc.h"
 
-#include <stdio.h>
-#include <string.h>
-#include <sys/ioctl.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
 #include <arpa/inet.h>
 #include <errno.h>
 #include <fcntl.h>
-
 #include <linux/if.h>
 #include <linux/if_tun.h>
 #include <linux/route.h>
 #include <linux/ipv6_route.h>
+#include <netinet/in.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+#include <log/log.h>
+
+#include "netutils/ifc.h"
 
 #include "jni.h"
 #include "JNIHelp.h"
diff --git a/services/core/jni/com_android_server_location_GnssLocationProvider.cpp b/services/core/jni/com_android_server_location_GnssLocationProvider.cpp
index 5046265..fa6405a 100644
--- a/services/core/jni/com_android_server_location_GnssLocationProvider.cpp
+++ b/services/core/jni/com_android_server_location_GnssLocationProvider.cpp
@@ -894,11 +894,11 @@
  * interface.
  */
 struct AGnssRilCallback : IAGnssRilCallback {
-    Return<void> requestSetIdCb(IAGnssRilCallback::ID setIdFlag) override;
+    Return<void> requestSetIdCb(uint32_t setIdFlag) override;
     Return<void> requestRefLocCb() override;
 };
 
-Return<void> AGnssRilCallback::requestSetIdCb(IAGnssRilCallback::ID setIdFlag) {
+Return<void> AGnssRilCallback::requestSetIdCb(uint32_t setIdFlag) {
     JNIEnv* env = getJniEnv();
     env->CallVoidMethod(mCallbacksObj, method_requestSetID, setIdFlag);
     checkAndClearExceptionFromCallback(env, __FUNCTION__);
diff --git a/services/tests/servicestests/src/com/android/server/wm/DisplayContentTests.java b/services/tests/servicestests/src/com/android/server/wm/DisplayContentTests.java
index 786c2bb..85931e8 100644
--- a/services/tests/servicestests/src/com/android/server/wm/DisplayContentTests.java
+++ b/services/tests/servicestests/src/com/android/server/wm/DisplayContentTests.java
@@ -19,6 +19,7 @@
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
+import android.content.res.Configuration;
 import android.hardware.display.DisplayManagerGlobal;
 import android.platform.test.annotations.Presubmit;
 import android.support.test.filters.SmallTest;
@@ -208,6 +209,10 @@
         voiceInteractionWindow.removeImmediately();
     }
 
+    /**
+     * This tests stack movement between displays and proper stack's, task's and app token's display
+     * container references updates.
+     */
     @Test
     public void testMoveStackBetweenDisplays() throws Exception {
         // Create second display.
@@ -238,4 +243,28 @@
         assertEquals(sDisplayContent, task.getDisplayContent());
         assertEquals(sDisplayContent, token.getDisplayContent());
     }
+
+    /**
+     * This tests override configuration updates for display content.
+     */
+    @Test
+    public void testDisplayOverrideConfigUpdate() throws Exception {
+        final int displayId = sDisplayContent.getDisplayId();
+        final Configuration currentOverrideConfig = sDisplayContent.getOverrideConfiguration();
+
+        // Create new, slightly changed override configuration and apply it to the display.
+        final Configuration newOverrideConfig = new Configuration(currentOverrideConfig);
+        newOverrideConfig.densityDpi += 120;
+        newOverrideConfig.fontScale += 0.3;
+
+        sWm.setNewDisplayOverrideConfiguration(newOverrideConfig, displayId);
+
+        // Check that override config is applied.
+        assertEquals(newOverrideConfig, sDisplayContent.getOverrideConfiguration());
+
+        // Check that global configuration is updated, as we've updated default display's config.
+        final Configuration globalConfig = sWm.mRoot.getConfiguration();
+        assertEquals(newOverrideConfig.densityDpi, globalConfig.densityDpi);
+        assertEquals(newOverrideConfig.fontScale, globalConfig.fontScale, 0.1 /* delta */);
+    }
 }