[SP03] support registerNetworkStatsProvider API
am: 80831d2ff3

Change-Id: Id3a21676b6063048124c54035207a1c070df7a8c
diff --git a/Android.bp b/Android.bp
index b782fec..b69617b 100644
--- a/Android.bp
+++ b/Android.bp
@@ -917,6 +917,7 @@
         "core/java/android/os/RemoteException.java",
         "core/java/android/util/AndroidException.java",
     ],
+    libs: [ "unsupportedappusage" ],
 
     dxflags: ["--core-library"],
     installable: false,
diff --git a/core/java/android/bluetooth/BluetoothA2dp.java b/core/java/android/bluetooth/BluetoothA2dp.java
index 64df0e8..d8c653c6 100644
--- a/core/java/android/bluetooth/BluetoothA2dp.java
+++ b/core/java/android/bluetooth/BluetoothA2dp.java
@@ -24,7 +24,7 @@
 import android.annotation.SdkConstant;
 import android.annotation.SdkConstant.SdkConstantType;
 import android.annotation.SystemApi;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.os.Binder;
 import android.os.Build;
diff --git a/core/java/android/bluetooth/BluetoothA2dpSink.java b/core/java/android/bluetooth/BluetoothA2dpSink.java
index c6957e1..8993de0 100755
--- a/core/java/android/bluetooth/BluetoothA2dpSink.java
+++ b/core/java/android/bluetooth/BluetoothA2dpSink.java
@@ -21,7 +21,7 @@
 import android.annotation.RequiresPermission;
 import android.annotation.SuppressLint;
 import android.annotation.SystemApi;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.os.Binder;
 import android.os.IBinder;
diff --git a/core/java/android/bluetooth/BluetoothAdapter.java b/core/java/android/bluetooth/BluetoothAdapter.java
index 220b77b..1869c6f 100644
--- a/core/java/android/bluetooth/BluetoothAdapter.java
+++ b/core/java/android/bluetooth/BluetoothAdapter.java
@@ -25,7 +25,6 @@
 import android.annotation.SdkConstant;
 import android.annotation.SdkConstant.SdkConstantType;
 import android.annotation.SystemApi;
-import android.annotation.UnsupportedAppUsage;
 import android.app.ActivityThread;
 import android.bluetooth.BluetoothProfile.ConnectionPolicy;
 import android.bluetooth.le.BluetoothLeAdvertiser;
@@ -36,6 +35,7 @@
 import android.bluetooth.le.ScanRecord;
 import android.bluetooth.le.ScanResult;
 import android.bluetooth.le.ScanSettings;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.os.BatteryStats;
 import android.os.Binder;
diff --git a/core/java/android/bluetooth/BluetoothClass.java b/core/java/android/bluetooth/BluetoothClass.java
index 260e2fb..905b0cee 100755
--- a/core/java/android/bluetooth/BluetoothClass.java
+++ b/core/java/android/bluetooth/BluetoothClass.java
@@ -17,7 +17,7 @@
 package android.bluetooth;
 
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Build;
 import android.os.Parcel;
 import android.os.Parcelable;
diff --git a/core/java/android/bluetooth/BluetoothCodecConfig.java b/core/java/android/bluetooth/BluetoothCodecConfig.java
index 08d0797..93e76fa 100644
--- a/core/java/android/bluetooth/BluetoothCodecConfig.java
+++ b/core/java/android/bluetooth/BluetoothCodecConfig.java
@@ -19,7 +19,7 @@
 import android.annotation.IntDef;
 import android.annotation.NonNull;
 import android.annotation.SystemApi;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Parcel;
 import android.os.Parcelable;
 
diff --git a/core/java/android/bluetooth/BluetoothDevice.java b/core/java/android/bluetooth/BluetoothDevice.java
index 323c7d1..9fe4dd6 100644
--- a/core/java/android/bluetooth/BluetoothDevice.java
+++ b/core/java/android/bluetooth/BluetoothDevice.java
@@ -24,7 +24,7 @@
 import android.annotation.SdkConstant;
 import android.annotation.SdkConstant.SdkConstantType;
 import android.annotation.SystemApi;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.os.Handler;
 import android.os.Parcel;
diff --git a/core/java/android/bluetooth/BluetoothGatt.java b/core/java/android/bluetooth/BluetoothGatt.java
index d616b8f..f877f04 100644
--- a/core/java/android/bluetooth/BluetoothGatt.java
+++ b/core/java/android/bluetooth/BluetoothGatt.java
@@ -16,7 +16,7 @@
 
 package android.bluetooth;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Build;
 import android.os.Handler;
 import android.os.ParcelUuid;
diff --git a/core/java/android/bluetooth/BluetoothGattCharacteristic.java b/core/java/android/bluetooth/BluetoothGattCharacteristic.java
index edacf3e..7066f47 100644
--- a/core/java/android/bluetooth/BluetoothGattCharacteristic.java
+++ b/core/java/android/bluetooth/BluetoothGattCharacteristic.java
@@ -15,7 +15,7 @@
  */
 package android.bluetooth;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Parcel;
 import android.os.ParcelUuid;
 import android.os.Parcelable;
diff --git a/core/java/android/bluetooth/BluetoothGattDescriptor.java b/core/java/android/bluetooth/BluetoothGattDescriptor.java
index 0783cd2..7cc2d6b 100644
--- a/core/java/android/bluetooth/BluetoothGattDescriptor.java
+++ b/core/java/android/bluetooth/BluetoothGattDescriptor.java
@@ -16,7 +16,7 @@
 
 package android.bluetooth;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Parcel;
 import android.os.ParcelUuid;
 import android.os.Parcelable;
diff --git a/core/java/android/bluetooth/BluetoothGattService.java b/core/java/android/bluetooth/BluetoothGattService.java
index c20faf9..13d6d70 100644
--- a/core/java/android/bluetooth/BluetoothGattService.java
+++ b/core/java/android/bluetooth/BluetoothGattService.java
@@ -15,7 +15,7 @@
  */
 package android.bluetooth;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Parcel;
 import android.os.ParcelUuid;
 import android.os.Parcelable;
diff --git a/core/java/android/bluetooth/BluetoothHeadset.java b/core/java/android/bluetooth/BluetoothHeadset.java
index 0955b10..1ba2bb5 100644
--- a/core/java/android/bluetooth/BluetoothHeadset.java
+++ b/core/java/android/bluetooth/BluetoothHeadset.java
@@ -23,7 +23,7 @@
 import android.annotation.SdkConstant;
 import android.annotation.SdkConstant.SdkConstantType;
 import android.annotation.SystemApi;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.ComponentName;
 import android.content.Context;
 import android.os.Binder;
diff --git a/core/java/android/bluetooth/BluetoothHeadsetClient.java b/core/java/android/bluetooth/BluetoothHeadsetClient.java
index 7ee29ff..6de1ffb 100644
--- a/core/java/android/bluetooth/BluetoothHeadsetClient.java
+++ b/core/java/android/bluetooth/BluetoothHeadsetClient.java
@@ -19,7 +19,7 @@
 import android.Manifest;
 import android.annotation.RequiresPermission;
 import android.annotation.SystemApi;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.os.Binder;
 import android.os.Bundle;
diff --git a/core/java/android/bluetooth/BluetoothHeadsetClientCall.java b/core/java/android/bluetooth/BluetoothHeadsetClientCall.java
index 7165dd5..d1a096e 100644
--- a/core/java/android/bluetooth/BluetoothHeadsetClientCall.java
+++ b/core/java/android/bluetooth/BluetoothHeadsetClientCall.java
@@ -16,7 +16,7 @@
 
 package android.bluetooth;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Parcel;
 import android.os.Parcelable;
 import android.os.SystemClock;
diff --git a/core/java/android/bluetooth/BluetoothHearingAid.java b/core/java/android/bluetooth/BluetoothHearingAid.java
index a65162a..38498bc 100644
--- a/core/java/android/bluetooth/BluetoothHearingAid.java
+++ b/core/java/android/bluetooth/BluetoothHearingAid.java
@@ -23,7 +23,7 @@
 import android.annotation.SdkConstant;
 import android.annotation.SdkConstant.SdkConstantType;
 import android.annotation.SystemApi;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.os.Binder;
 import android.os.IBinder;
diff --git a/core/java/android/bluetooth/BluetoothMap.java b/core/java/android/bluetooth/BluetoothMap.java
index f2ceabc..4674706 100644
--- a/core/java/android/bluetooth/BluetoothMap.java
+++ b/core/java/android/bluetooth/BluetoothMap.java
@@ -22,7 +22,7 @@
 import android.annotation.RequiresPermission;
 import android.annotation.SuppressLint;
 import android.annotation.SystemApi;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.os.Binder;
 import android.os.IBinder;
diff --git a/core/java/android/bluetooth/BluetoothMapClient.java b/core/java/android/bluetooth/BluetoothMapClient.java
index 0ec473c..0aa5aac 100644
--- a/core/java/android/bluetooth/BluetoothMapClient.java
+++ b/core/java/android/bluetooth/BluetoothMapClient.java
@@ -19,8 +19,8 @@
 import android.Manifest;
 import android.annotation.RequiresPermission;
 import android.annotation.SystemApi;
-import android.annotation.UnsupportedAppUsage;
 import android.app.PendingIntent;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.net.Uri;
 import android.os.Binder;
diff --git a/core/java/android/bluetooth/BluetoothPan.java b/core/java/android/bluetooth/BluetoothPan.java
index f5de4ad..024bb06 100644
--- a/core/java/android/bluetooth/BluetoothPan.java
+++ b/core/java/android/bluetooth/BluetoothPan.java
@@ -25,7 +25,7 @@
 import android.annotation.SdkConstant.SdkConstantType;
 import android.annotation.SuppressLint;
 import android.annotation.SystemApi;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.os.Binder;
 import android.os.IBinder;
diff --git a/core/java/android/bluetooth/BluetoothPbap.java b/core/java/android/bluetooth/BluetoothPbap.java
index 74ee2c3..e07ca52 100644
--- a/core/java/android/bluetooth/BluetoothPbap.java
+++ b/core/java/android/bluetooth/BluetoothPbap.java
@@ -23,7 +23,7 @@
 import android.annotation.SdkConstant;
 import android.annotation.SuppressLint;
 import android.annotation.SystemApi;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
diff --git a/core/java/android/bluetooth/BluetoothProfile.java b/core/java/android/bluetooth/BluetoothProfile.java
index 097a367..638e6de 100644
--- a/core/java/android/bluetooth/BluetoothProfile.java
+++ b/core/java/android/bluetooth/BluetoothProfile.java
@@ -22,7 +22,7 @@
 import android.annotation.RequiresPermission;
 import android.annotation.SuppressLint;
 import android.annotation.SystemApi;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
diff --git a/core/java/android/bluetooth/BluetoothSap.java b/core/java/android/bluetooth/BluetoothSap.java
index 9b4dabc..8bf1b58 100644
--- a/core/java/android/bluetooth/BluetoothSap.java
+++ b/core/java/android/bluetooth/BluetoothSap.java
@@ -19,7 +19,7 @@
 import android.Manifest;
 import android.annotation.RequiresPermission;
 import android.annotation.SystemApi;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.os.Binder;
 import android.os.IBinder;
diff --git a/core/java/android/bluetooth/BluetoothServerSocket.java b/core/java/android/bluetooth/BluetoothServerSocket.java
index 3a23808..88c186c 100644
--- a/core/java/android/bluetooth/BluetoothServerSocket.java
+++ b/core/java/android/bluetooth/BluetoothServerSocket.java
@@ -16,7 +16,7 @@
 
 package android.bluetooth;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Handler;
 import android.os.ParcelUuid;
 import android.util.Log;
diff --git a/core/java/android/bluetooth/BluetoothSocket.java b/core/java/android/bluetooth/BluetoothSocket.java
index 760166b..f774369 100644
--- a/core/java/android/bluetooth/BluetoothSocket.java
+++ b/core/java/android/bluetooth/BluetoothSocket.java
@@ -16,7 +16,7 @@
 
 package android.bluetooth;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.net.LocalSocket;
 import android.os.ParcelFileDescriptor;
 import android.os.ParcelUuid;
diff --git a/core/java/android/bluetooth/BluetoothUuid.java b/core/java/android/bluetooth/BluetoothUuid.java
index 7e96c23..e274af1 100644
--- a/core/java/android/bluetooth/BluetoothUuid.java
+++ b/core/java/android/bluetooth/BluetoothUuid.java
@@ -19,7 +19,7 @@
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.annotation.SystemApi;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.ParcelUuid;
 
 import java.nio.ByteBuffer;
diff --git a/core/java/android/bluetooth/le/ScanRecord.java b/core/java/android/bluetooth/le/ScanRecord.java
index 97e3f52..c0c1aa1 100644
--- a/core/java/android/bluetooth/le/ScanRecord.java
+++ b/core/java/android/bluetooth/le/ScanRecord.java
@@ -18,8 +18,8 @@
 
 import android.annotation.NonNull;
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
 import android.bluetooth.BluetoothUuid;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.ParcelUuid;
 import android.util.ArrayMap;
 import android.util.Log;
diff --git a/core/java/android/companion/AssociationRequest.java b/core/java/android/companion/AssociationRequest.java
index e4114c6..489d125 100644
--- a/core/java/android/companion/AssociationRequest.java
+++ b/core/java/android/companion/AssociationRequest.java
@@ -18,7 +18,7 @@
 
 import android.annotation.NonNull;
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Parcel;
 import android.os.Parcelable;
 import android.provider.OneTimeUseBuilder;
diff --git a/core/java/android/companion/BluetoothDeviceFilter.java b/core/java/android/companion/BluetoothDeviceFilter.java
index fe0123c..2649fbe 100644
--- a/core/java/android/companion/BluetoothDeviceFilter.java
+++ b/core/java/android/companion/BluetoothDeviceFilter.java
@@ -25,8 +25,8 @@
 
 import android.annotation.NonNull;
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
 import android.bluetooth.BluetoothDevice;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Parcel;
 import android.os.ParcelUuid;
 import android.provider.OneTimeUseBuilder;
diff --git a/core/java/android/companion/BluetoothDeviceFilterUtils.java b/core/java/android/companion/BluetoothDeviceFilterUtils.java
index 0f67f6b..24be45c 100644
--- a/core/java/android/companion/BluetoothDeviceFilterUtils.java
+++ b/core/java/android/companion/BluetoothDeviceFilterUtils.java
@@ -21,9 +21,9 @@
 
 import android.annotation.NonNull;
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
 import android.bluetooth.BluetoothDevice;
 import android.bluetooth.le.ScanFilter;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.net.wifi.ScanResult;
 import android.os.ParcelUuid;
 import android.os.Parcelable;
diff --git a/core/java/android/companion/BluetoothLeDeviceFilter.java b/core/java/android/companion/BluetoothLeDeviceFilter.java
index 2701619..730bc60 100644
--- a/core/java/android/companion/BluetoothLeDeviceFilter.java
+++ b/core/java/android/companion/BluetoothLeDeviceFilter.java
@@ -25,11 +25,11 @@
 
 import android.annotation.NonNull;
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
 import android.bluetooth.BluetoothDevice;
 import android.bluetooth.le.ScanFilter;
 import android.bluetooth.le.ScanRecord;
 import android.bluetooth.le.ScanResult;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Parcel;
 import android.provider.OneTimeUseBuilder;
 import android.text.TextUtils;
diff --git a/core/java/android/companion/DeviceFilter.java b/core/java/android/companion/DeviceFilter.java
index dc7cf82..c9cb072 100644
--- a/core/java/android/companion/DeviceFilter.java
+++ b/core/java/android/companion/DeviceFilter.java
@@ -19,7 +19,7 @@
 
 import android.annotation.IntDef;
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Parcelable;
 
 import java.lang.annotation.Retention;
diff --git a/core/java/android/content/AsyncTaskLoader.java b/core/java/android/content/AsyncTaskLoader.java
index bb7d5e4..14c3387 100644
--- a/core/java/android/content/AsyncTaskLoader.java
+++ b/core/java/android/content/AsyncTaskLoader.java
@@ -16,7 +16,7 @@
 
 package android.content;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.AsyncTask;
 import android.os.Handler;
 import android.os.OperationCanceledException;
diff --git a/core/java/android/content/BroadcastReceiver.java b/core/java/android/content/BroadcastReceiver.java
index f73a376..1d4d30d 100644
--- a/core/java/android/content/BroadcastReceiver.java
+++ b/core/java/android/content/BroadcastReceiver.java
@@ -18,11 +18,11 @@
 
 import android.annotation.NonNull;
 import android.annotation.SystemApi;
-import android.annotation.UnsupportedAppUsage;
 import android.app.ActivityManager;
 import android.app.ActivityThread;
 import android.app.IActivityManager;
 import android.app.QueuedWork;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Build;
 import android.os.Bundle;
 import android.os.IBinder;
diff --git a/core/java/android/content/ClipData.java b/core/java/android/content/ClipData.java
index 88e2c22..5c67283 100644
--- a/core/java/android/content/ClipData.java
+++ b/core/java/android/content/ClipData.java
@@ -21,7 +21,7 @@
 import static android.content.ContentResolver.SCHEME_CONTENT;
 import static android.content.ContentResolver.SCHEME_FILE;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.res.AssetFileDescriptor;
 import android.graphics.Bitmap;
 import android.net.Uri;
diff --git a/core/java/android/content/ClipboardManager.java b/core/java/android/content/ClipboardManager.java
index dc1c700..dec9589 100644
--- a/core/java/android/content/ClipboardManager.java
+++ b/core/java/android/content/ClipboardManager.java
@@ -19,7 +19,7 @@
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.annotation.SystemService;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Handler;
 import android.os.RemoteException;
 import android.os.ServiceManager;
diff --git a/core/java/android/content/ComponentName.java b/core/java/android/content/ComponentName.java
index 18147b5..e955c2d 100644
--- a/core/java/android/content/ComponentName.java
+++ b/core/java/android/content/ComponentName.java
@@ -18,7 +18,7 @@
 
 import android.annotation.NonNull;
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Parcel;
 import android.os.Parcelable;
 import android.text.TextUtils;
diff --git a/core/java/android/content/ContentProvider.java b/core/java/android/content/ContentProvider.java
index 7cdd268..137faea 100644
--- a/core/java/android/content/ContentProvider.java
+++ b/core/java/android/content/ContentProvider.java
@@ -26,8 +26,8 @@
 
 import android.annotation.NonNull;
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
 import android.app.AppOpsManager;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.pm.PathPermission;
 import android.content.pm.ProviderInfo;
 import android.content.res.AssetFileDescriptor;
diff --git a/core/java/android/content/ContentProviderClient.java b/core/java/android/content/ContentProviderClient.java
index 93bf518..db8aa40 100644
--- a/core/java/android/content/ContentProviderClient.java
+++ b/core/java/android/content/ContentProviderClient.java
@@ -22,7 +22,7 @@
 import android.annotation.RequiresPermission;
 import android.annotation.SystemApi;
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.res.AssetFileDescriptor;
 import android.database.CrossProcessCursorWrapper;
 import android.database.Cursor;
diff --git a/core/java/android/content/ContentProviderNative.java b/core/java/android/content/ContentProviderNative.java
index 9948338..234f567 100644
--- a/core/java/android/content/ContentProviderNative.java
+++ b/core/java/android/content/ContentProviderNative.java
@@ -17,7 +17,7 @@
 package android.content;
 
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.res.AssetFileDescriptor;
 import android.database.BulkCursorDescriptor;
 import android.database.BulkCursorToCursorAdaptor;
diff --git a/core/java/android/content/ContentProviderOperation.java b/core/java/android/content/ContentProviderOperation.java
index c201e4d..e401f2a 100644
--- a/core/java/android/content/ContentProviderOperation.java
+++ b/core/java/android/content/ContentProviderOperation.java
@@ -16,7 +16,7 @@
 
 package android.content;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.database.Cursor;
 import android.net.Uri;
 import android.os.Parcel;
diff --git a/core/java/android/content/ContentResolver.java b/core/java/android/content/ContentResolver.java
index 0a1bc85..a50831f 100644
--- a/core/java/android/content/ContentResolver.java
+++ b/core/java/android/content/ContentResolver.java
@@ -25,12 +25,12 @@
 import android.annotation.RequiresPermission;
 import android.annotation.SystemApi;
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
 import android.annotation.UserIdInt;
 import android.app.ActivityManager;
 import android.app.ActivityThread;
 import android.app.AppGlobals;
 import android.app.UriGrantsManager;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.pm.PackageManager.NameNotFoundException;
 import android.content.res.AssetFileDescriptor;
 import android.content.res.Resources;
diff --git a/core/java/android/content/ContentValues.java b/core/java/android/content/ContentValues.java
index eafeed2..76d37fc 100644
--- a/core/java/android/content/ContentValues.java
+++ b/core/java/android/content/ContentValues.java
@@ -16,7 +16,7 @@
 
 package android.content;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Parcel;
 import android.os.Parcelable;
 import android.util.ArrayMap;
diff --git a/core/java/android/content/Context.java b/core/java/android/content/Context.java
index f359641..0228b10 100644
--- a/core/java/android/content/Context.java
+++ b/core/java/android/content/Context.java
@@ -32,12 +32,12 @@
 import android.annotation.StyleableRes;
 import android.annotation.SystemApi;
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
 import android.annotation.UserIdInt;
 import android.app.ActivityManager;
 import android.app.IApplicationThread;
 import android.app.IServiceConnection;
 import android.app.VrManager;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.pm.ApplicationInfo;
 import android.content.pm.PackageManager;
 import android.content.res.AssetManager;
diff --git a/core/java/android/content/ContextWrapper.java b/core/java/android/content/ContextWrapper.java
index 877557f..72cc021 100644
--- a/core/java/android/content/ContextWrapper.java
+++ b/core/java/android/content/ContextWrapper.java
@@ -21,9 +21,9 @@
 import android.annotation.RequiresPermission;
 import android.annotation.SystemApi;
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
 import android.app.IApplicationThread;
 import android.app.IServiceConnection;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.pm.ApplicationInfo;
 import android.content.pm.PackageManager;
 import android.content.res.AssetManager;
diff --git a/core/java/android/content/CursorEntityIterator.java b/core/java/android/content/CursorEntityIterator.java
index 2c630d2..952366d 100644
--- a/core/java/android/content/CursorEntityIterator.java
+++ b/core/java/android/content/CursorEntityIterator.java
@@ -16,7 +16,7 @@
 
 package android.content;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.database.Cursor;
 import android.os.RemoteException;
 
diff --git a/core/java/android/content/CursorLoader.java b/core/java/android/content/CursorLoader.java
index 4ccafab..4ff5cca 100644
--- a/core/java/android/content/CursorLoader.java
+++ b/core/java/android/content/CursorLoader.java
@@ -16,7 +16,7 @@
 
 package android.content;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.database.Cursor;
 import android.net.Uri;
 import android.os.CancellationSignal;
diff --git a/core/java/android/content/Entity.java b/core/java/android/content/Entity.java
index ff4f150..13137c4 100644
--- a/core/java/android/content/Entity.java
+++ b/core/java/android/content/Entity.java
@@ -16,7 +16,7 @@
 
 package android.content;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.net.Uri;
 import android.os.Build;
 
diff --git a/core/java/android/content/IContentProvider.java b/core/java/android/content/IContentProvider.java
index 0427c2f..92df7ee 100644
--- a/core/java/android/content/IContentProvider.java
+++ b/core/java/android/content/IContentProvider.java
@@ -17,7 +17,7 @@
 package android.content;
 
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.res.AssetFileDescriptor;
 import android.database.Cursor;
 import android.net.Uri;
diff --git a/core/java/android/content/Intent.java b/core/java/android/content/Intent.java
index a6867ff..9c7bf1f 100644
--- a/core/java/android/content/Intent.java
+++ b/core/java/android/content/Intent.java
@@ -28,8 +28,8 @@
 import android.annotation.SdkConstant.SdkConstantType;
 import android.annotation.SystemApi;
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
 import android.app.AppGlobals;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.pm.ActivityInfo;
 import android.content.pm.ApplicationInfo;
 import android.content.pm.ComponentInfo;
diff --git a/core/java/android/content/IntentFilter.java b/core/java/android/content/IntentFilter.java
index 099dea2..4d0ecff 100644
--- a/core/java/android/content/IntentFilter.java
+++ b/core/java/android/content/IntentFilter.java
@@ -18,7 +18,7 @@
 
 import android.annotation.IntDef;
 import android.annotation.SystemApi;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.net.Uri;
 import android.os.Build;
 import android.os.Parcel;
diff --git a/core/java/android/content/IntentSender.java b/core/java/android/content/IntentSender.java
index ec0bac4..f40dc29 100644
--- a/core/java/android/content/IntentSender.java
+++ b/core/java/android/content/IntentSender.java
@@ -16,14 +16,14 @@
 
 package android.content;
 
-import android.annotation.UnsupportedAppUsage;
 import android.app.ActivityManager;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Bundle;
-import android.os.RemoteException;
 import android.os.Handler;
 import android.os.IBinder;
 import android.os.Parcel;
 import android.os.Parcelable;
+import android.os.RemoteException;
 import android.os.UserHandle;
 import android.util.AndroidException;
 
diff --git a/core/java/android/content/RestrictionsManager.java b/core/java/android/content/RestrictionsManager.java
index bbdab04..885eb70 100644
--- a/core/java/android/content/RestrictionsManager.java
+++ b/core/java/android/content/RestrictionsManager.java
@@ -17,9 +17,9 @@
 package android.content;
 
 import android.annotation.SystemService;
-import android.annotation.UnsupportedAppUsage;
 import android.app.Activity;
 import android.app.admin.DevicePolicyManager;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.pm.ApplicationInfo;
 import android.content.pm.PackageManager;
 import android.content.pm.PackageManager.NameNotFoundException;
diff --git a/core/java/android/content/SearchRecentSuggestionsProvider.java b/core/java/android/content/SearchRecentSuggestionsProvider.java
index 8ee7b9e..fc3ddf6 100644
--- a/core/java/android/content/SearchRecentSuggestionsProvider.java
+++ b/core/java/android/content/SearchRecentSuggestionsProvider.java
@@ -16,8 +16,8 @@
 
 package android.content;
 
-import android.annotation.UnsupportedAppUsage;
 import android.app.SearchManager;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.database.Cursor;
 import android.database.sqlite.SQLiteDatabase;
 import android.database.sqlite.SQLiteOpenHelper;
diff --git a/core/java/android/content/SyncAdapterType.java b/core/java/android/content/SyncAdapterType.java
index 8c8fe5a..7bcdbfd 100644
--- a/core/java/android/content/SyncAdapterType.java
+++ b/core/java/android/content/SyncAdapterType.java
@@ -17,11 +17,11 @@
 package android.content;
 
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Build;
-import android.text.TextUtils;
-import android.os.Parcelable;
 import android.os.Parcel;
+import android.os.Parcelable;
+import android.text.TextUtils;
 
 /**
  * Value type that represents a SyncAdapterType. This object overrides {@link #equals} and
diff --git a/core/java/android/content/SyncAdaptersCache.java b/core/java/android/content/SyncAdaptersCache.java
index d4e5217..58445a7 100644
--- a/core/java/android/content/SyncAdaptersCache.java
+++ b/core/java/android/content/SyncAdaptersCache.java
@@ -16,7 +16,7 @@
 
 package android.content;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.pm.RegisteredServicesCache;
 import android.content.pm.XmlSerializerAndParser;
 import android.content.res.Resources;
@@ -29,8 +29,8 @@
 import com.android.internal.annotations.GuardedBy;
 
 import org.xmlpull.v1.XmlPullParser;
-import org.xmlpull.v1.XmlSerializer;
 import org.xmlpull.v1.XmlPullParserException;
+import org.xmlpull.v1.XmlSerializer;
 
 import java.io.IOException;
 import java.util.ArrayList;
diff --git a/core/java/android/content/SyncContext.java b/core/java/android/content/SyncContext.java
index 50d1dc9..4a9f66c 100644
--- a/core/java/android/content/SyncContext.java
+++ b/core/java/android/content/SyncContext.java
@@ -16,10 +16,10 @@
 
 package android.content;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
+import android.os.IBinder;
 import android.os.RemoteException;
 import android.os.SystemClock;
-import android.os.IBinder;
 
 public class SyncContext {
     private ISyncContext mSyncContext;
diff --git a/core/java/android/content/SyncInfo.java b/core/java/android/content/SyncInfo.java
index d3f2eed..017a92b 100644
--- a/core/java/android/content/SyncInfo.java
+++ b/core/java/android/content/SyncInfo.java
@@ -17,7 +17,7 @@
 package android.content;
 
 import android.accounts.Account;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Build;
 import android.os.Parcel;
 import android.os.Parcelable;
diff --git a/core/java/android/content/SyncRequest.java b/core/java/android/content/SyncRequest.java
index 5f1f180..9e568a4 100644
--- a/core/java/android/content/SyncRequest.java
+++ b/core/java/android/content/SyncRequest.java
@@ -17,7 +17,7 @@
 package android.content;
 
 import android.accounts.Account;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Build;
 import android.os.Bundle;
 import android.os.Parcel;
diff --git a/core/java/android/content/SyncStatusInfo.java b/core/java/android/content/SyncStatusInfo.java
index 3f64515..620fdb7 100644
--- a/core/java/android/content/SyncStatusInfo.java
+++ b/core/java/android/content/SyncStatusInfo.java
@@ -16,7 +16,7 @@
 
 package android.content;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Parcel;
 import android.os.Parcelable;
 import android.util.Log;
diff --git a/core/java/android/content/UndoManager.java b/core/java/android/content/UndoManager.java
index f9c58d6..ed9cd86 100644
--- a/core/java/android/content/UndoManager.java
+++ b/core/java/android/content/UndoManager.java
@@ -16,7 +16,7 @@
 
 package android.content;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Parcel;
 import android.text.TextUtils;
 import android.util.ArrayMap;
diff --git a/core/java/android/content/UndoOperation.java b/core/java/android/content/UndoOperation.java
index a425486..235d721 100644
--- a/core/java/android/content/UndoOperation.java
+++ b/core/java/android/content/UndoOperation.java
@@ -16,7 +16,7 @@
 
 package android.content;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Parcel;
 import android.os.Parcelable;
 
diff --git a/core/java/android/content/UriMatcher.java b/core/java/android/content/UriMatcher.java
index 208bc01..7fa48f0 100644
--- a/core/java/android/content/UriMatcher.java
+++ b/core/java/android/content/UriMatcher.java
@@ -16,7 +16,7 @@
 
 package android.content;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.net.Uri;
 
 import java.util.ArrayList;
diff --git a/core/java/android/content/om/OverlayInfo.java b/core/java/android/content/om/OverlayInfo.java
index 1a78f79..a3487be 100644
--- a/core/java/android/content/om/OverlayInfo.java
+++ b/core/java/android/content/om/OverlayInfo.java
@@ -20,8 +20,8 @@
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.annotation.SystemApi;
-import android.annotation.UnsupportedAppUsage;
 import android.annotation.UserIdInt;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Parcel;
 import android.os.Parcelable;
 
diff --git a/core/java/android/content/pm/ActivityInfo.java b/core/java/android/content/pm/ActivityInfo.java
index 95e5f6b..43dd1f45 100644
--- a/core/java/android/content/pm/ActivityInfo.java
+++ b/core/java/android/content/pm/ActivityInfo.java
@@ -18,7 +18,7 @@
 
 import android.annotation.IntDef;
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.ComponentName;
 import android.content.Intent;
 import android.content.res.Configuration;
diff --git a/core/java/android/content/pm/ApplicationInfo.java b/core/java/android/content/pm/ApplicationInfo.java
index 0ea1845..49d2201 100644
--- a/core/java/android/content/pm/ApplicationInfo.java
+++ b/core/java/android/content/pm/ApplicationInfo.java
@@ -22,7 +22,7 @@
 import android.annotation.Nullable;
 import android.annotation.SystemApi;
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.pm.PackageManager.NameNotFoundException;
 import android.content.res.Resources;
diff --git a/core/java/android/content/pm/BaseParceledListSlice.java b/core/java/android/content/pm/BaseParceledListSlice.java
index 4178309..5d1a08c 100644
--- a/core/java/android/content/pm/BaseParceledListSlice.java
+++ b/core/java/android/content/pm/BaseParceledListSlice.java
@@ -16,7 +16,7 @@
 
 package android.content.pm;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Binder;
 import android.os.IBinder;
 import android.os.Parcel;
diff --git a/core/java/android/content/pm/ComponentInfo.java b/core/java/android/content/pm/ComponentInfo.java
index 29612c2..988b280 100644
--- a/core/java/android/content/pm/ComponentInfo.java
+++ b/core/java/android/content/pm/ComponentInfo.java
@@ -16,7 +16,7 @@
 
 package android.content.pm;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.ComponentName;
 import android.graphics.drawable.Drawable;
 import android.os.Parcel;
diff --git a/core/java/android/content/pm/LauncherActivityInfo.java b/core/java/android/content/pm/LauncherActivityInfo.java
index 1451431..67deb82 100644
--- a/core/java/android/content/pm/LauncherActivityInfo.java
+++ b/core/java/android/content/pm/LauncherActivityInfo.java
@@ -16,7 +16,7 @@
 
 package android.content.pm;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.pm.PackageManager.NameNotFoundException;
diff --git a/core/java/android/content/pm/LauncherApps.java b/core/java/android/content/pm/LauncherApps.java
index 3933e81..ac8eab7 100644
--- a/core/java/android/content/pm/LauncherApps.java
+++ b/core/java/android/content/pm/LauncherApps.java
@@ -25,10 +25,10 @@
 import android.annotation.SystemApi;
 import android.annotation.SystemService;
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
 import android.app.PendingIntent;
 import android.appwidget.AppWidgetManager;
 import android.appwidget.AppWidgetProviderInfo;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.ActivityNotFoundException;
 import android.content.ComponentName;
 import android.content.Context;
diff --git a/core/java/android/content/pm/PackageInfo.java b/core/java/android/content/pm/PackageInfo.java
index d6fb28f..f4d4a8d 100644
--- a/core/java/android/content/pm/PackageInfo.java
+++ b/core/java/android/content/pm/PackageInfo.java
@@ -17,7 +17,7 @@
 package android.content.pm;
 
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Build;
 import android.os.Parcel;
 import android.os.Parcelable;
diff --git a/core/java/android/content/pm/PackageInfoLite.java b/core/java/android/content/pm/PackageInfoLite.java
index f5442ec..6743a3f 100644
--- a/core/java/android/content/pm/PackageInfoLite.java
+++ b/core/java/android/content/pm/PackageInfoLite.java
@@ -16,7 +16,7 @@
 
 package android.content.pm;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Build;
 import android.os.Parcel;
 import android.os.Parcelable;
diff --git a/core/java/android/content/pm/PackageInstaller.java b/core/java/android/content/pm/PackageInstaller.java
index 1099d8b..78db3d8 100644
--- a/core/java/android/content/pm/PackageInstaller.java
+++ b/core/java/android/content/pm/PackageInstaller.java
@@ -26,9 +26,9 @@
 import android.annotation.SdkConstant.SdkConstantType;
 import android.annotation.SystemApi;
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
 import android.app.ActivityManager;
 import android.app.AppGlobals;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Intent;
 import android.content.IntentSender;
 import android.content.pm.PackageManager.DeleteFlags;
diff --git a/core/java/android/content/pm/PackageManager.java b/core/java/android/content/pm/PackageManager.java
index 81670cd..0ae00fb 100644
--- a/core/java/android/content/pm/PackageManager.java
+++ b/core/java/android/content/pm/PackageManager.java
@@ -29,7 +29,6 @@
 import android.annotation.StringRes;
 import android.annotation.SystemApi;
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
 import android.annotation.UserIdInt;
 import android.annotation.XmlRes;
 import android.app.ActivityManager;
@@ -38,6 +37,7 @@
 import android.app.PackageInstallObserver;
 import android.app.admin.DevicePolicyManager;
 import android.app.usage.StorageStatsManager;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
diff --git a/core/java/android/content/pm/PackageParser.java b/core/java/android/content/pm/PackageParser.java
index 812ae93..0e61016 100644
--- a/core/java/android/content/pm/PackageParser.java
+++ b/core/java/android/content/pm/PackageParser.java
@@ -47,11 +47,11 @@
 import android.annotation.Nullable;
 import android.annotation.StringRes;
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
 import android.apex.ApexInfo;
 import android.app.ActivityTaskManager;
 import android.app.ActivityThread;
 import android.app.ResourcesManager;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.ComponentName;
 import android.content.Intent;
 import android.content.IntentFilter;
diff --git a/core/java/android/content/pm/PackageStats.java b/core/java/android/content/pm/PackageStats.java
index b0fecfa..7c12527 100644
--- a/core/java/android/content/pm/PackageStats.java
+++ b/core/java/android/content/pm/PackageStats.java
@@ -16,8 +16,8 @@
 
 package android.content.pm;
 
-import android.annotation.UnsupportedAppUsage;
 import android.app.usage.StorageStatsManager;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Build;
 import android.os.Parcel;
 import android.os.Parcelable;
diff --git a/core/java/android/content/pm/PackageUserState.java b/core/java/android/content/pm/PackageUserState.java
index 249b691..d1e1132 100644
--- a/core/java/android/content/pm/PackageUserState.java
+++ b/core/java/android/content/pm/PackageUserState.java
@@ -27,7 +27,7 @@
 import static android.content.pm.PackageManager.MATCH_DISABLED_UNTIL_USED_COMPONENTS;
 import static android.content.pm.PackageManager.MATCH_SYSTEM_ONLY;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.BaseBundle;
 import android.os.Debug;
 import android.os.PersistableBundle;
diff --git a/core/java/android/content/pm/ParceledListSlice.java b/core/java/android/content/pm/ParceledListSlice.java
index dccc524..73119e0 100644
--- a/core/java/android/content/pm/ParceledListSlice.java
+++ b/core/java/android/content/pm/ParceledListSlice.java
@@ -16,7 +16,7 @@
 
 package android.content.pm;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Build;
 import android.os.Parcel;
 import android.os.Parcelable;
diff --git a/core/java/android/content/pm/PermissionInfo.java b/core/java/android/content/pm/PermissionInfo.java
index c77c53f..89a1c6a 100644
--- a/core/java/android/content/pm/PermissionInfo.java
+++ b/core/java/android/content/pm/PermissionInfo.java
@@ -22,7 +22,7 @@
 import android.annotation.StringRes;
 import android.annotation.SystemApi;
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Parcel;
 import android.os.Parcelable;
 import android.text.TextUtils;
diff --git a/core/java/android/content/pm/RegisteredServicesCache.java b/core/java/android/content/pm/RegisteredServicesCache.java
index 23fbefb..bd909c7 100644
--- a/core/java/android/content/pm/RegisteredServicesCache.java
+++ b/core/java/android/content/pm/RegisteredServicesCache.java
@@ -17,7 +17,7 @@
 package android.content.pm;
 
 import android.Manifest;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.BroadcastReceiver;
 import android.content.ComponentName;
 import android.content.Context;
@@ -43,11 +43,11 @@
 import com.android.internal.util.ArrayUtils;
 import com.android.internal.util.FastXmlSerializer;
 
+import libcore.io.IoUtils;
+
 import com.google.android.collect.Lists;
 import com.google.android.collect.Maps;
 
-import libcore.io.IoUtils;
-
 import org.xmlpull.v1.XmlPullParser;
 import org.xmlpull.v1.XmlPullParserException;
 import org.xmlpull.v1.XmlSerializer;
diff --git a/core/java/android/content/pm/ResolveInfo.java b/core/java/android/content/pm/ResolveInfo.java
index 1734182..7755fe3 100644
--- a/core/java/android/content/pm/ResolveInfo.java
+++ b/core/java/android/content/pm/ResolveInfo.java
@@ -17,7 +17,7 @@
 package android.content.pm;
 
 import android.annotation.SystemApi;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.ComponentName;
 import android.content.IntentFilter;
 import android.graphics.drawable.Drawable;
diff --git a/core/java/android/content/pm/ShortcutInfo.java b/core/java/android/content/pm/ShortcutInfo.java
index 58aacc2..e14bcf6 100644
--- a/core/java/android/content/pm/ShortcutInfo.java
+++ b/core/java/android/content/pm/ShortcutInfo.java
@@ -20,11 +20,11 @@
 import android.annotation.Nullable;
 import android.annotation.SystemApi;
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
 import android.annotation.UserIdInt;
 import android.app.Notification;
 import android.app.Person;
 import android.app.TaskStackBuilder;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
diff --git a/core/java/android/content/pm/ShortcutManager.java b/core/java/android/content/pm/ShortcutManager.java
index f851799..dde8865 100644
--- a/core/java/android/content/pm/ShortcutManager.java
+++ b/core/java/android/content/pm/ShortcutManager.java
@@ -22,9 +22,9 @@
 import android.annotation.SystemApi;
 import android.annotation.SystemService;
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
 import android.annotation.UserIdInt;
 import android.app.usage.UsageStatsManager;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
diff --git a/core/java/android/content/pm/Signature.java b/core/java/android/content/pm/Signature.java
index 25a4dca..3b84ae7 100644
--- a/core/java/android/content/pm/Signature.java
+++ b/core/java/android/content/pm/Signature.java
@@ -16,7 +16,7 @@
 
 package android.content.pm;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Parcel;
 import android.os.Parcelable;
 
diff --git a/core/java/android/content/pm/UserInfo.java b/core/java/android/content/pm/UserInfo.java
index 2b1b32e..caf0958 100644
--- a/core/java/android/content/pm/UserInfo.java
+++ b/core/java/android/content/pm/UserInfo.java
@@ -16,10 +16,9 @@
 
 package android.content.pm;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Parcel;
 import android.os.Parcelable;
-import android.os.SystemProperties;
 import android.os.UserHandle;
 import android.os.UserManager;
 
diff --git a/core/java/android/content/pm/VerifierInfo.java b/core/java/android/content/pm/VerifierInfo.java
index 224ca62..5f88555 100644
--- a/core/java/android/content/pm/VerifierInfo.java
+++ b/core/java/android/content/pm/VerifierInfo.java
@@ -16,7 +16,7 @@
 
 package android.content.pm;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Parcel;
 import android.os.Parcelable;
 
diff --git a/core/java/android/content/pm/XmlSerializerAndParser.java b/core/java/android/content/pm/XmlSerializerAndParser.java
index 6d24800..5dce839 100644
--- a/core/java/android/content/pm/XmlSerializerAndParser.java
+++ b/core/java/android/content/pm/XmlSerializerAndParser.java
@@ -16,11 +16,12 @@
 
 package android.content.pm;
 
-import org.xmlpull.v1.XmlSerializer;
+import android.compat.annotation.UnsupportedAppUsage;
+
 import org.xmlpull.v1.XmlPullParser;
 import org.xmlpull.v1.XmlPullParserException;
+import org.xmlpull.v1.XmlSerializer;
 
-import android.annotation.UnsupportedAppUsage;
 import java.io.IOException;
 
 /** @hide */
diff --git a/core/java/android/content/res/ApkAssets.java b/core/java/android/content/res/ApkAssets.java
index 69462ab..baa3e84 100644
--- a/core/java/android/content/res/ApkAssets.java
+++ b/core/java/android/content/res/ApkAssets.java
@@ -16,7 +16,7 @@
 package android.content.res;
 
 import android.annotation.NonNull;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 
 import com.android.internal.annotations.GuardedBy;
 import com.android.internal.util.Preconditions;
diff --git a/core/java/android/content/res/AssetFileDescriptor.java b/core/java/android/content/res/AssetFileDescriptor.java
index 2ba5579..e93ec00 100644
--- a/core/java/android/content/res/AssetFileDescriptor.java
+++ b/core/java/android/content/res/AssetFileDescriptor.java
@@ -16,7 +16,7 @@
 
 package android.content.res;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Bundle;
 import android.os.Parcel;
 import android.os.ParcelFileDescriptor;
diff --git a/core/java/android/content/res/AssetManager.java b/core/java/android/content/res/AssetManager.java
index e5ef67b..a70eff9 100644
--- a/core/java/android/content/res/AssetManager.java
+++ b/core/java/android/content/res/AssetManager.java
@@ -24,7 +24,7 @@
 import android.annotation.StringRes;
 import android.annotation.StyleRes;
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.pm.ActivityInfo;
 import android.content.res.Configuration.NativeConfig;
 import android.os.ParcelFileDescriptor;
diff --git a/core/java/android/content/res/ColorStateList.java b/core/java/android/content/res/ColorStateList.java
index b5b097b..f23c802 100644
--- a/core/java/android/content/res/ColorStateList.java
+++ b/core/java/android/content/res/ColorStateList.java
@@ -19,9 +19,18 @@
 import android.annotation.ColorInt;
 import android.annotation.NonNull;
 import android.annotation.Nullable;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.pm.ActivityInfo.Config;
 import android.content.res.Resources.Theme;
 import android.graphics.Color;
+import android.os.Parcel;
+import android.os.Parcelable;
+import android.util.AttributeSet;
+import android.util.Log;
+import android.util.MathUtils;
+import android.util.SparseArray;
+import android.util.StateSet;
+import android.util.Xml;
 
 import com.android.internal.R;
 import com.android.internal.util.ArrayUtils;
@@ -30,16 +39,6 @@
 import org.xmlpull.v1.XmlPullParser;
 import org.xmlpull.v1.XmlPullParserException;
 
-import android.annotation.UnsupportedAppUsage;
-import android.util.AttributeSet;
-import android.util.Log;
-import android.util.MathUtils;
-import android.util.SparseArray;
-import android.util.StateSet;
-import android.util.Xml;
-import android.os.Parcel;
-import android.os.Parcelable;
-
 import java.io.IOException;
 import java.lang.ref.WeakReference;
 import java.util.Arrays;
diff --git a/core/java/android/content/res/CompatibilityInfo.java b/core/java/android/content/res/CompatibilityInfo.java
index f3b7553..c66c70a2 100644
--- a/core/java/android/content/res/CompatibilityInfo.java
+++ b/core/java/android/content/res/CompatibilityInfo.java
@@ -16,7 +16,7 @@
 
 package android.content.res;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.pm.ApplicationInfo;
 import android.graphics.Canvas;
 import android.graphics.PointF;
diff --git a/core/java/android/content/res/Configuration.java b/core/java/android/content/res/Configuration.java
index e40e566..cec6382 100644
--- a/core/java/android/content/res/Configuration.java
+++ b/core/java/android/content/res/Configuration.java
@@ -45,8 +45,8 @@
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
 import android.app.WindowConfiguration;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.LocaleProto;
 import android.content.pm.ActivityInfo;
 import android.content.pm.ActivityInfo.Config;
diff --git a/core/java/android/content/res/ConfigurationBoundResourceCache.java b/core/java/android/content/res/ConfigurationBoundResourceCache.java
index 848790f..5e10a57 100644
--- a/core/java/android/content/res/ConfigurationBoundResourceCache.java
+++ b/core/java/android/content/res/ConfigurationBoundResourceCache.java
@@ -16,7 +16,7 @@
 
 package android.content.res;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.pm.ActivityInfo.Config;
 
 /**
diff --git a/core/java/android/content/res/DrawableCache.java b/core/java/android/content/res/DrawableCache.java
index 90604b8..5497e61 100644
--- a/core/java/android/content/res/DrawableCache.java
+++ b/core/java/android/content/res/DrawableCache.java
@@ -16,7 +16,7 @@
 
 package android.content.res;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.graphics.drawable.Drawable;
 
 /**
diff --git a/core/java/android/content/res/ObbInfo.java b/core/java/android/content/res/ObbInfo.java
index 8af27ca..c477abc 100644
--- a/core/java/android/content/res/ObbInfo.java
+++ b/core/java/android/content/res/ObbInfo.java
@@ -16,7 +16,7 @@
 
 package android.content.res;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Parcel;
 import android.os.Parcelable;
 
diff --git a/core/java/android/content/res/Resources.java b/core/java/android/content/res/Resources.java
index d7e4e14..4f6449e 100644
--- a/core/java/android/content/res/Resources.java
+++ b/core/java/android/content/res/Resources.java
@@ -39,8 +39,8 @@
 import android.annotation.StringRes;
 import android.annotation.StyleRes;
 import android.annotation.StyleableRes;
-import android.annotation.UnsupportedAppUsage;
 import android.annotation.XmlRes;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.pm.ActivityInfo;
 import android.content.pm.ActivityInfo.Config;
 import android.graphics.Movie;
diff --git a/core/java/android/content/res/ResourcesImpl.java b/core/java/android/content/res/ResourcesImpl.java
index 794be9e..86ba0b6 100644
--- a/core/java/android/content/res/ResourcesImpl.java
+++ b/core/java/android/content/res/ResourcesImpl.java
@@ -27,7 +27,7 @@
 import android.annotation.RawRes;
 import android.annotation.StyleRes;
 import android.annotation.StyleableRes;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.pm.ActivityInfo;
 import android.content.pm.ActivityInfo.Config;
 import android.content.res.AssetManager.AssetInputStream;
diff --git a/core/java/android/content/res/ResourcesKey.java b/core/java/android/content/res/ResourcesKey.java
index 1db2dd8..a29fea0 100644
--- a/core/java/android/content/res/ResourcesKey.java
+++ b/core/java/android/content/res/ResourcesKey.java
@@ -18,7 +18,7 @@
 
 import android.annotation.NonNull;
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.text.TextUtils;
 
 import java.util.Arrays;
diff --git a/core/java/android/content/res/StringBlock.java b/core/java/android/content/res/StringBlock.java
index b7bc822..6258892 100644
--- a/core/java/android/content/res/StringBlock.java
+++ b/core/java/android/content/res/StringBlock.java
@@ -16,7 +16,7 @@
 
 package android.content.res;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.graphics.Color;
 import android.graphics.Paint;
 import android.graphics.Rect;
diff --git a/core/java/android/content/res/ThemedResourceCache.java b/core/java/android/content/res/ThemedResourceCache.java
index 06cafdb..f24e6f2 100644
--- a/core/java/android/content/res/ThemedResourceCache.java
+++ b/core/java/android/content/res/ThemedResourceCache.java
@@ -18,12 +18,12 @@
 
 import android.annotation.NonNull;
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.pm.ActivityInfo.Config;
 import android.content.res.Resources.Theme;
 import android.content.res.Resources.ThemeKey;
-import android.util.LongSparseArray;
 import android.util.ArrayMap;
+import android.util.LongSparseArray;
 
 import java.lang.ref.WeakReference;
 
diff --git a/core/java/android/content/res/TypedArray.java b/core/java/android/content/res/TypedArray.java
index b79cf65..90affdf 100644
--- a/core/java/android/content/res/TypedArray.java
+++ b/core/java/android/content/res/TypedArray.java
@@ -20,7 +20,7 @@
 import android.annotation.ColorInt;
 import android.annotation.Nullable;
 import android.annotation.StyleableRes;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.pm.ActivityInfo;
 import android.content.pm.ActivityInfo.Config;
 import android.graphics.Typeface;
diff --git a/core/java/android/content/res/XmlBlock.java b/core/java/android/content/res/XmlBlock.java
index 626bf77..cb93cbf 100644
--- a/core/java/android/content/res/XmlBlock.java
+++ b/core/java/android/content/res/XmlBlock.java
@@ -20,7 +20,7 @@
 
 import android.annotation.AnyRes;
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.util.TypedValue;
 
 import com.android.internal.util.XmlUtils;
diff --git a/core/java/android/net/ConnectivityManager.java b/core/java/android/net/ConnectivityManager.java
index 4002e8d..3c85649 100644
--- a/core/java/android/net/ConnectivityManager.java
+++ b/core/java/android/net/ConnectivityManager.java
@@ -3121,8 +3121,6 @@
     @RequiresPermission(android.Manifest.permission.NETWORK_FACTORY)
     public int registerNetworkProvider(@NonNull NetworkProvider provider) {
         if (provider.getProviderId() != NetworkProvider.ID_NONE) {
-            // TODO: Provide a better method for checking this by moving NetworkFactory.SerialNumber
-            // out of NetworkFactory.
             throw new IllegalStateException("NetworkProviders can only be registered once");
         }
 
@@ -3176,8 +3174,7 @@
     @RequiresPermission(android.Manifest.permission.NETWORK_FACTORY)
     public int registerNetworkAgent(Messenger messenger, NetworkInfo ni, LinkProperties lp,
             NetworkCapabilities nc, int score, NetworkMisc misc) {
-        return registerNetworkAgent(messenger, ni, lp, nc, score, misc,
-                NetworkFactory.SerialNumber.NONE);
+        return registerNetworkAgent(messenger, ni, lp, nc, score, misc, NetworkProvider.ID_NONE);
     }
 
     /**
@@ -3187,10 +3184,9 @@
      */
     @RequiresPermission(android.Manifest.permission.NETWORK_FACTORY)
     public int registerNetworkAgent(Messenger messenger, NetworkInfo ni, LinkProperties lp,
-            NetworkCapabilities nc, int score, NetworkMisc misc, int factorySerialNumber) {
+            NetworkCapabilities nc, int score, NetworkMisc misc, int providerId) {
         try {
-            return mService.registerNetworkAgent(messenger, ni, lp, nc, score, misc,
-                    factorySerialNumber);
+            return mService.registerNetworkAgent(messenger, ni, lp, nc, score, misc, providerId);
         } catch (RemoteException e) {
             throw e.rethrowFromSystemServer();
         }
diff --git a/core/java/android/net/NetworkAgent.java b/core/java/android/net/NetworkAgent.java
index 60bd573..5f6cc6e 100644
--- a/core/java/android/net/NetworkAgent.java
+++ b/core/java/android/net/NetworkAgent.java
@@ -58,7 +58,7 @@
     private static final long BW_REFRESH_MIN_WIN_MS = 500;
     private boolean mPollLceScheduled = false;
     private AtomicBoolean mPollLcePending = new AtomicBoolean(false);
-    public final int mFactorySerialNumber;
+    public final int mProviderId;
 
     private static final int BASE = Protocol.BASE_NETWORK_AGENT;
 
@@ -219,25 +219,25 @@
     // the entire tree.
     public NetworkAgent(Looper looper, Context context, String logTag, NetworkInfo ni,
             NetworkCapabilities nc, LinkProperties lp, int score) {
-        this(looper, context, logTag, ni, nc, lp, score, null, NetworkFactory.SerialNumber.NONE);
+        this(looper, context, logTag, ni, nc, lp, score, null, NetworkProvider.ID_NONE);
     }
     public NetworkAgent(Looper looper, Context context, String logTag, NetworkInfo ni,
             NetworkCapabilities nc, LinkProperties lp, int score, NetworkMisc misc) {
-        this(looper, context, logTag, ni, nc, lp, score, misc, NetworkFactory.SerialNumber.NONE);
+        this(looper, context, logTag, ni, nc, lp, score, misc, NetworkProvider.ID_NONE);
     }
 
     public NetworkAgent(Looper looper, Context context, String logTag, NetworkInfo ni,
-            NetworkCapabilities nc, LinkProperties lp, int score, int factorySerialNumber) {
-        this(looper, context, logTag, ni, nc, lp, score, null, factorySerialNumber);
+            NetworkCapabilities nc, LinkProperties lp, int score, int providerId) {
+        this(looper, context, logTag, ni, nc, lp, score, null, providerId);
     }
 
     public NetworkAgent(Looper looper, Context context, String logTag, NetworkInfo ni,
             NetworkCapabilities nc, LinkProperties lp, int score, NetworkMisc misc,
-            int factorySerialNumber) {
+            int providerId) {
         super(looper);
         LOG_TAG = logTag;
         mContext = context;
-        mFactorySerialNumber = factorySerialNumber;
+        mProviderId = providerId;
         if (ni == null || nc == null || lp == null) {
             throw new IllegalArgumentException();
         }
@@ -246,8 +246,7 @@
         ConnectivityManager cm = (ConnectivityManager)mContext.getSystemService(
                 Context.CONNECTIVITY_SERVICE);
         netId = cm.registerNetworkAgent(new Messenger(this), new NetworkInfo(ni),
-                new LinkProperties(lp), new NetworkCapabilities(nc), score, misc,
-                factorySerialNumber);
+                new LinkProperties(lp), new NetworkCapabilities(nc), score, misc, providerId);
     }
 
     @Override
diff --git a/core/java/android/net/NetworkFactory.java b/core/java/android/net/NetworkFactory.java
index f10ea20..824ddb8 100644
--- a/core/java/android/net/NetworkFactory.java
+++ b/core/java/android/net/NetworkFactory.java
@@ -91,7 +91,7 @@
      *            with the same NetworkRequest but an updated score.
      *            Also, network conditions may change for this bearer
      *            allowing for a better score in the future.
-     * msg.arg2 = the serial number of the factory currently responsible for the
+     * msg.arg2 = the ID of the NetworkProvider currently responsible for the
      *            NetworkAgent handling this request, or NetworkProvider.ID_NONE if none.
      */
     public static final int CMD_REQUEST_NETWORK = BASE;
@@ -156,8 +156,8 @@
         mProvider = new NetworkProvider(mContext, NetworkFactory.this.getLooper(), LOG_TAG) {
             @Override
             public void onNetworkRequested(@NonNull NetworkRequest request, int score,
-                    int servingFactoryProviderId) {
-                handleAddRequest((NetworkRequest) request, score, servingFactoryProviderId);
+                    int servingProviderId) {
+                handleAddRequest((NetworkRequest) request, score, servingProviderId);
             }
 
             @Override
@@ -228,8 +228,6 @@
      *
      * @param request the request to handle.
      * @param score the score of the NetworkAgent currently satisfying this request.
-     * @param servingProviderId the serial number of the NetworkFactory that
-     *         created the NetworkAgent currently satisfying this request.
      */
     // TODO : remove this method. It is a stopgap measure to help sheperding a number
     // of dependent changes that would conflict throughout the automerger graph. Having this
@@ -237,7 +235,7 @@
     // the entire tree.
     @VisibleForTesting
     protected void handleAddRequest(NetworkRequest request, int score) {
-        handleAddRequest(request, score, SerialNumber.NONE);
+        handleAddRequest(request, score, NetworkProvider.ID_NONE);
     }
 
     /**
@@ -246,24 +244,23 @@
      *
      * @param request the request to handle.
      * @param score the score of the NetworkAgent currently satisfying this request.
-     * @param servingProviderId the serial number of the NetworkFactory that
-     *         created the NetworkAgent currently satisfying this request.
+     * @param servingProviderId the ID of the NetworkProvider that created the NetworkAgent
+     *        currently satisfying this request.
      */
     @VisibleForTesting
-    protected void handleAddRequest(NetworkRequest request, int score,
-            int servingProviderId) {
+    protected void handleAddRequest(NetworkRequest request, int score, int servingProviderId) {
         NetworkRequestInfo n = mNetworkRequests.get(request.requestId);
         if (n == null) {
             if (DBG) {
                 log("got request " + request + " with score " + score
-                        + " and serial " + servingProviderId);
+                        + " and providerId " + servingProviderId);
             }
             n = new NetworkRequestInfo(request, score, servingProviderId);
             mNetworkRequests.put(n.request.requestId, n);
         } else {
             if (VDBG) {
                 log("new score " + score + " for exisiting request " + request
-                        + " with serial " + servingProviderId);
+                        + " and providerId " + servingProviderId);
             }
             n.score = score;
             n.providerId = servingProviderId;
diff --git a/core/java/android/net/nsd/NsdServiceInfo.java b/core/java/android/net/nsd/NsdServiceInfo.java
index 459b140..0946499 100644
--- a/core/java/android/net/nsd/NsdServiceInfo.java
+++ b/core/java/android/net/nsd/NsdServiceInfo.java
@@ -17,13 +17,13 @@
 package android.net.nsd;
 
 import android.annotation.NonNull;
-import android.annotation.UnsupportedAppUsage;
-import android.os.Parcelable;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Parcel;
+import android.os.Parcelable;
 import android.text.TextUtils;
+import android.util.ArrayMap;
 import android.util.Base64;
 import android.util.Log;
-import android.util.ArrayMap;
 
 import java.io.UnsupportedEncodingException;
 import java.net.InetAddress;
diff --git a/core/java/android/nfc/ErrorCodes.java b/core/java/android/nfc/ErrorCodes.java
index 98e31ad..d2c81cd 100644
--- a/core/java/android/nfc/ErrorCodes.java
+++ b/core/java/android/nfc/ErrorCodes.java
@@ -16,7 +16,7 @@
 
 package android.nfc;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 
 /**
  * This class defines all the error codes that can be returned by the service
diff --git a/core/java/android/nfc/NdefRecord.java b/core/java/android/nfc/NdefRecord.java
index 5044a86..fe316c4 100644
--- a/core/java/android/nfc/NdefRecord.java
+++ b/core/java/android/nfc/NdefRecord.java
@@ -16,7 +16,7 @@
 
 package android.nfc;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Intent;
 import android.net.Uri;
 import android.os.Parcel;
diff --git a/core/java/android/nfc/NfcActivityManager.java b/core/java/android/nfc/NfcActivityManager.java
index abfa133..935374d1 100644
--- a/core/java/android/nfc/NfcActivityManager.java
+++ b/core/java/android/nfc/NfcActivityManager.java
@@ -16,9 +16,9 @@
 
 package android.nfc;
 
-import android.annotation.UnsupportedAppUsage;
 import android.app.Activity;
 import android.app.Application;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.ContentProvider;
 import android.content.Intent;
 import android.net.Uri;
@@ -26,7 +26,6 @@
 import android.os.Binder;
 import android.os.Bundle;
 import android.os.RemoteException;
-import android.os.UserHandle;
 import android.util.Log;
 
 import java.util.ArrayList;
diff --git a/core/java/android/nfc/NfcAdapter.java b/core/java/android/nfc/NfcAdapter.java
index 7ab984f..d320f61 100644
--- a/core/java/android/nfc/NfcAdapter.java
+++ b/core/java/android/nfc/NfcAdapter.java
@@ -21,11 +21,11 @@
 import android.annotation.SdkConstant;
 import android.annotation.SdkConstant.SdkConstantType;
 import android.annotation.SystemApi;
-import android.annotation.UnsupportedAppUsage;
 import android.app.Activity;
 import android.app.ActivityThread;
 import android.app.OnActivityPausedListener;
 import android.app.PendingIntent;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.IntentFilter;
 import android.content.pm.IPackageManager;
diff --git a/core/java/android/nfc/NfcManager.java b/core/java/android/nfc/NfcManager.java
index 030066e..644e312 100644
--- a/core/java/android/nfc/NfcManager.java
+++ b/core/java/android/nfc/NfcManager.java
@@ -17,7 +17,7 @@
 package android.nfc;
 
 import android.annotation.SystemService;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.os.Build;
 
diff --git a/core/java/android/nfc/Tag.java b/core/java/android/nfc/Tag.java
index 5a4c465..8bb2df0 100644
--- a/core/java/android/nfc/Tag.java
+++ b/core/java/android/nfc/Tag.java
@@ -16,7 +16,7 @@
 
 package android.nfc;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.nfc.tech.IsoDep;
 import android.nfc.tech.MifareClassic;
diff --git a/core/java/android/nfc/cardemulation/AidGroup.java b/core/java/android/nfc/cardemulation/AidGroup.java
index 77b5552..c4f5e0b 100644
--- a/core/java/android/nfc/cardemulation/AidGroup.java
+++ b/core/java/android/nfc/cardemulation/AidGroup.java
@@ -16,18 +16,18 @@
 
 package android.nfc.cardemulation;
 
-import java.io.IOException;
-import java.util.ArrayList;
-import java.util.List;
+import android.compat.annotation.UnsupportedAppUsage;
+import android.os.Parcel;
+import android.os.Parcelable;
+import android.util.Log;
 
 import org.xmlpull.v1.XmlPullParser;
 import org.xmlpull.v1.XmlPullParserException;
 import org.xmlpull.v1.XmlSerializer;
 
-import android.annotation.UnsupportedAppUsage;
-import android.os.Parcel;
-import android.os.Parcelable;
-import android.util.Log;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
 
 /**
  * The AidGroup class represents a group of Application Identifiers (AIDs).
diff --git a/core/java/android/nfc/cardemulation/ApduServiceInfo.java b/core/java/android/nfc/cardemulation/ApduServiceInfo.java
index d9000e4..8da9db1 100644
--- a/core/java/android/nfc/cardemulation/ApduServiceInfo.java
+++ b/core/java/android/nfc/cardemulation/ApduServiceInfo.java
@@ -16,7 +16,7 @@
 
 package android.nfc.cardemulation;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.ComponentName;
 import android.content.pm.PackageManager;
 import android.content.pm.PackageManager.NameNotFoundException;
diff --git a/core/java/android/os/AsyncResult.java b/core/java/android/os/AsyncResult.java
index 58a2701..e80528b 100644
--- a/core/java/android/os/AsyncResult.java
+++ b/core/java/android/os/AsyncResult.java
@@ -16,8 +16,7 @@
 
 package android.os;
 
-import android.annotation.UnsupportedAppUsage;
-import android.os.Message;
+import android.compat.annotation.UnsupportedAppUsage;
 
 /** @hide */
 public class AsyncResult
diff --git a/core/java/android/os/AsyncTask.java b/core/java/android/os/AsyncTask.java
index b37e176..e1dabd3 100644
--- a/core/java/android/os/AsyncTask.java
+++ b/core/java/android/os/AsyncTask.java
@@ -18,8 +18,8 @@
 
 import android.annotation.MainThread;
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
 import android.annotation.WorkerThread;
+import android.compat.annotation.UnsupportedAppUsage;
 
 import java.util.ArrayDeque;
 import java.util.concurrent.Callable;
diff --git a/core/java/android/os/BaseBundle.java b/core/java/android/os/BaseBundle.java
index 7f63f8f..e6ad917 100644
--- a/core/java/android/os/BaseBundle.java
+++ b/core/java/android/os/BaseBundle.java
@@ -18,7 +18,7 @@
 
 import android.annotation.NonNull;
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.util.ArrayMap;
 import android.util.Log;
 import android.util.MathUtils;
diff --git a/core/java/android/os/BatteryManager.java b/core/java/android/os/BatteryManager.java
index 5ced86c..12ec0a0 100644
--- a/core/java/android/os/BatteryManager.java
+++ b/core/java/android/os/BatteryManager.java
@@ -21,7 +21,7 @@
 import android.annotation.SystemApi;
 import android.annotation.SystemService;
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.Intent;
 import android.hardware.health.V1_0.Constants;
diff --git a/core/java/android/os/BatteryStats.java b/core/java/android/os/BatteryStats.java
index 6efe1de4..44f7fa3 100644
--- a/core/java/android/os/BatteryStats.java
+++ b/core/java/android/os/BatteryStats.java
@@ -19,9 +19,9 @@
 import static android.app.ActivityManager.PROCESS_STATE_BOUND_TOP;
 import static android.app.ActivityManager.PROCESS_STATE_FOREGROUND_SERVICE_LOCATION;
 
-import android.annotation.UnsupportedAppUsage;
 import android.app.ActivityManager;
 import android.app.job.JobParameters;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.pm.ApplicationInfo;
 import android.server.ServerProtoEnums;
diff --git a/core/java/android/os/Binder.java b/core/java/android/os/Binder.java
index 2e6d2cc..9c4a36f 100644
--- a/core/java/android/os/Binder.java
+++ b/core/java/android/os/Binder.java
@@ -19,7 +19,7 @@
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.annotation.SystemApi;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.util.ExceptionUtils;
 import android.util.Log;
 import android.util.Slog;
diff --git a/core/java/android/os/Broadcaster.java b/core/java/android/os/Broadcaster.java
index 6ac7f1a..d1a953f 100644
--- a/core/java/android/os/Broadcaster.java
+++ b/core/java/android/os/Broadcaster.java
@@ -16,7 +16,7 @@
 
 package android.os;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 
 /** @hide */
 public class Broadcaster
diff --git a/core/java/android/os/Build.java b/core/java/android/os/Build.java
index 46b497d..6750fc7 100755
--- a/core/java/android/os/Build.java
+++ b/core/java/android/os/Build.java
@@ -22,9 +22,9 @@
 import android.annotation.SuppressAutoDoc;
 import android.annotation.SystemApi;
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
 import android.app.ActivityThread;
 import android.app.Application;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.sysprop.TelephonyProperties;
 import android.text.TextUtils;
diff --git a/core/java/android/os/Bundle.java b/core/java/android/os/Bundle.java
index b82e517..a2071e0 100644
--- a/core/java/android/os/Bundle.java
+++ b/core/java/android/os/Bundle.java
@@ -17,7 +17,7 @@
 package android.os;
 
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.util.ArrayMap;
 import android.util.Size;
 import android.util.SizeF;
diff --git a/core/java/android/os/CancellationSignal.java b/core/java/android/os/CancellationSignal.java
index 99fb998..260f7ad 100644
--- a/core/java/android/os/CancellationSignal.java
+++ b/core/java/android/os/CancellationSignal.java
@@ -16,9 +16,7 @@
 
 package android.os;
 
-import android.os.ICancellationSignal;
-
-import dalvik.annotation.compat.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 
 /**
  * Provides the ability to cancel an operation in progress.
diff --git a/core/java/android/os/Debug.java b/core/java/android/os/Debug.java
index d7ed055..5037922 100644
--- a/core/java/android/os/Debug.java
+++ b/core/java/android/os/Debug.java
@@ -18,8 +18,8 @@
 
 import android.annotation.NonNull;
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
 import android.app.AppGlobals;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.util.Log;
 
diff --git a/core/java/android/os/DropBoxManager.java b/core/java/android/os/DropBoxManager.java
index b7cccc6..18ba5a8 100644
--- a/core/java/android/os/DropBoxManager.java
+++ b/core/java/android/os/DropBoxManager.java
@@ -24,7 +24,7 @@
 import android.annotation.SdkConstant;
 import android.annotation.SdkConstant.SdkConstantType;
 import android.annotation.SystemService;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.util.Log;
 
diff --git a/core/java/android/os/Environment.java b/core/java/android/os/Environment.java
index 7a131e5..6639d57 100644
--- a/core/java/android/os/Environment.java
+++ b/core/java/android/os/Environment.java
@@ -20,10 +20,10 @@
 import android.annotation.NonNull;
 import android.annotation.SystemApi;
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
 import android.app.AppGlobals;
 import android.app.AppOpsManager;
 import android.app.admin.DevicePolicyManager;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.Intent;
 import android.content.pm.PackageManager;
diff --git a/core/java/android/os/FileObserver.java b/core/java/android/os/FileObserver.java
index 4d9ebc2..4628910 100644
--- a/core/java/android/os/FileObserver.java
+++ b/core/java/android/os/FileObserver.java
@@ -19,7 +19,7 @@
 import android.annotation.IntDef;
 import android.annotation.NonNull;
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.util.Log;
 
 import java.io.File;
diff --git a/core/java/android/os/FileUtils.java b/core/java/android/os/FileUtils.java
index 2ac3def..a47fbba 100644
--- a/core/java/android/os/FileUtils.java
+++ b/core/java/android/os/FileUtils.java
@@ -40,7 +40,7 @@
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.ContentResolver;
 import android.provider.DocumentsContract.Document;
 import android.system.ErrnoException;
diff --git a/core/java/android/os/Handler.java b/core/java/android/os/Handler.java
index a99bdabe..fa7404c 100644
--- a/core/java/android/os/Handler.java
+++ b/core/java/android/os/Handler.java
@@ -18,7 +18,7 @@
 
 import android.annotation.NonNull;
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.util.Log;
 import android.util.Printer;
 
diff --git a/core/java/android/os/HwBinder.java b/core/java/android/os/HwBinder.java
index 09afdc7..7c42c36 100644
--- a/core/java/android/os/HwBinder.java
+++ b/core/java/android/os/HwBinder.java
@@ -18,7 +18,7 @@
 
 import android.annotation.SystemApi;
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 
 import libcore.util.NativeAllocationRegistry;
 
diff --git a/core/java/android/os/HwParcel.java b/core/java/android/os/HwParcel.java
index 9786f16..fb36e6f 100644
--- a/core/java/android/os/HwParcel.java
+++ b/core/java/android/os/HwParcel.java
@@ -21,7 +21,7 @@
 import android.annotation.Nullable;
 import android.annotation.SystemApi;
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 
 import dalvik.annotation.optimization.FastNative;
 
diff --git a/core/java/android/os/HwRemoteBinder.java b/core/java/android/os/HwRemoteBinder.java
index 72ec958..756202e 100644
--- a/core/java/android/os/HwRemoteBinder.java
+++ b/core/java/android/os/HwRemoteBinder.java
@@ -16,7 +16,8 @@
 
 package android.os;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
+
 import libcore.util.NativeAllocationRegistry;
 
 /** @hide */
diff --git a/core/java/android/os/IBinder.java b/core/java/android/os/IBinder.java
index 83f88ad..d9ed327 100644
--- a/core/java/android/os/IBinder.java
+++ b/core/java/android/os/IBinder.java
@@ -18,7 +18,7 @@
 
 import android.annotation.NonNull;
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 
 import java.io.FileDescriptor;
 
diff --git a/core/java/android/os/LocaleList.java b/core/java/android/os/LocaleList.java
index 0de09ef..0bf387e 100644
--- a/core/java/android/os/LocaleList.java
+++ b/core/java/android/os/LocaleList.java
@@ -20,7 +20,7 @@
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.annotation.Size;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.icu.util.ULocale;
 
 import com.android.internal.annotations.GuardedBy;
diff --git a/core/java/android/os/Looper.java b/core/java/android/os/Looper.java
index d468972..5dc64d5 100644
--- a/core/java/android/os/Looper.java
+++ b/core/java/android/os/Looper.java
@@ -18,7 +18,7 @@
 
 import android.annotation.NonNull;
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.util.Log;
 import android.util.Printer;
 import android.util.Slog;
diff --git a/core/java/android/os/MemoryFile.java b/core/java/android/os/MemoryFile.java
index 5a1e3d4..f84f9f05 100644
--- a/core/java/android/os/MemoryFile.java
+++ b/core/java/android/os/MemoryFile.java
@@ -16,7 +16,7 @@
 
 package android.os;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.system.ErrnoException;
 
 import java.io.FileDescriptor;
diff --git a/core/java/android/os/Message.java b/core/java/android/os/Message.java
index 6055bef..8ac245b 100644
--- a/core/java/android/os/Message.java
+++ b/core/java/android/os/Message.java
@@ -16,7 +16,7 @@
 
 package android.os;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.util.TimeUtils;
 import android.util.proto.ProtoOutputStream;
 
diff --git a/core/java/android/os/MessageQueue.java b/core/java/android/os/MessageQueue.java
index f98fdc3..4e91057 100644
--- a/core/java/android/os/MessageQueue.java
+++ b/core/java/android/os/MessageQueue.java
@@ -19,8 +19,7 @@
 import android.annotation.IntDef;
 import android.annotation.NonNull;
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
-import android.os.MessageQueueProto;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.util.Log;
 import android.util.Printer;
 import android.util.SparseArray;
diff --git a/core/java/android/os/Parcel.java b/core/java/android/os/Parcel.java
index 041f31d..382c838 100644
--- a/core/java/android/os/Parcel.java
+++ b/core/java/android/os/Parcel.java
@@ -19,7 +19,7 @@
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.text.TextUtils;
 import android.util.ArrayMap;
 import android.util.ArraySet;
diff --git a/core/java/android/os/ParcelFileDescriptor.java b/core/java/android/os/ParcelFileDescriptor.java
index 2a4576a..214b3bb 100644
--- a/core/java/android/os/ParcelFileDescriptor.java
+++ b/core/java/android/os/ParcelFileDescriptor.java
@@ -32,7 +32,7 @@
 import static android.system.OsConstants.S_IWOTH;
 
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.BroadcastReceiver;
 import android.content.ContentProvider;
 import android.os.MessageQueue.OnFileDescriptorEventListener;
diff --git a/core/java/android/os/ParcelUuid.java b/core/java/android/os/ParcelUuid.java
index cc50c89..0b52c75 100644
--- a/core/java/android/os/ParcelUuid.java
+++ b/core/java/android/os/ParcelUuid.java
@@ -16,7 +16,7 @@
 
 package android.os;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 
 import java.util.UUID;
 
diff --git a/core/java/android/os/ParcelableParcel.java b/core/java/android/os/ParcelableParcel.java
index 61f3968..38d980e 100644
--- a/core/java/android/os/ParcelableParcel.java
+++ b/core/java/android/os/ParcelableParcel.java
@@ -16,7 +16,7 @@
 
 package android.os;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.util.MathUtils;
 
 /**
diff --git a/core/java/android/os/PerformanceCollector.java b/core/java/android/os/PerformanceCollector.java
index 33c86b8..27de48d 100644
--- a/core/java/android/os/PerformanceCollector.java
+++ b/core/java/android/os/PerformanceCollector.java
@@ -17,7 +17,8 @@
 package android.os;
 
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
+
 import java.util.ArrayList;
 
 /**
diff --git a/core/java/android/os/PowerManager.java b/core/java/android/os/PowerManager.java
index c618dbc..febc36c 100644
--- a/core/java/android/os/PowerManager.java
+++ b/core/java/android/os/PowerManager.java
@@ -26,7 +26,7 @@
 import android.annotation.SystemApi;
 import android.annotation.SystemService;
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.service.dreams.Sandman;
 import android.util.ArrayMap;
diff --git a/core/java/android/os/Process.java b/core/java/android/os/Process.java
index c94c74a..6f4f30c 100644
--- a/core/java/android/os/Process.java
+++ b/core/java/android/os/Process.java
@@ -19,7 +19,7 @@
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.system.Os;
 import android.system.OsConstants;
 import android.webkit.WebViewZygote;
diff --git a/core/java/android/os/RecoverySystem.java b/core/java/android/os/RecoverySystem.java
index e3f6e12..1901820 100644
--- a/core/java/android/os/RecoverySystem.java
+++ b/core/java/android/os/RecoverySystem.java
@@ -22,8 +22,8 @@
 import android.annotation.SuppressLint;
 import android.annotation.SystemApi;
 import android.annotation.SystemService;
-import android.annotation.UnsupportedAppUsage;
 import android.app.PendingIntent;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.BroadcastReceiver;
 import android.content.ContentResolver;
 import android.content.Context;
diff --git a/core/java/android/os/Registrant.java b/core/java/android/os/Registrant.java
index 572b975..d6afd04 100644
--- a/core/java/android/os/Registrant.java
+++ b/core/java/android/os/Registrant.java
@@ -16,9 +16,7 @@
 
 package android.os;
 
-import android.annotation.UnsupportedAppUsage;
-import android.os.Handler;
-import android.os.Message;
+import android.compat.annotation.UnsupportedAppUsage;
 
 import java.lang.ref.WeakReference;
 
diff --git a/core/java/android/os/RegistrantList.java b/core/java/android/os/RegistrantList.java
index 9c017df..98f949b 100644
--- a/core/java/android/os/RegistrantList.java
+++ b/core/java/android/os/RegistrantList.java
@@ -16,7 +16,7 @@
 
 package android.os;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 
 import java.util.ArrayList;
 
diff --git a/core/java/android/os/RemoteCallback.java b/core/java/android/os/RemoteCallback.java
index da58d0f..373060f 100644
--- a/core/java/android/os/RemoteCallback.java
+++ b/core/java/android/os/RemoteCallback.java
@@ -20,8 +20,7 @@
 import android.annotation.Nullable;
 import android.annotation.SystemApi;
 import android.annotation.TestApi;
-
-import dalvik.annotation.compat.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 
 /**
  * @hide
diff --git a/core/java/android/os/RemoteCallbackList.java b/core/java/android/os/RemoteCallbackList.java
index 6165146..df4ade0 100644
--- a/core/java/android/os/RemoteCallbackList.java
+++ b/core/java/android/os/RemoteCallbackList.java
@@ -16,7 +16,7 @@
 
 package android.os;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.util.ArrayMap;
 import android.util.Slog;
 
diff --git a/core/java/android/os/RemoteException.java b/core/java/android/os/RemoteException.java
index 2e673a8..c2f7f1b 100644
--- a/core/java/android/os/RemoteException.java
+++ b/core/java/android/os/RemoteException.java
@@ -16,7 +16,7 @@
 
 package android.os;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.util.AndroidException;
 
 /**
diff --git a/core/java/android/os/SELinux.java b/core/java/android/os/SELinux.java
index 34809e7..f64a811 100644
--- a/core/java/android/os/SELinux.java
+++ b/core/java/android/os/SELinux.java
@@ -16,7 +16,7 @@
 
 package android.os;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.util.Slog;
 
 import java.io.File;
diff --git a/core/java/android/os/ServiceManager.java b/core/java/android/os/ServiceManager.java
index bf9225a..c008f4d 100644
--- a/core/java/android/os/ServiceManager.java
+++ b/core/java/android/os/ServiceManager.java
@@ -16,7 +16,7 @@
 
 package android.os;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.util.ArrayMap;
 import android.util.Log;
 
diff --git a/core/java/android/os/ServiceManagerNative.java b/core/java/android/os/ServiceManagerNative.java
index 94671c8..39ddcb2 100644
--- a/core/java/android/os/ServiceManagerNative.java
+++ b/core/java/android/os/ServiceManagerNative.java
@@ -16,7 +16,7 @@
 
 package android.os;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 
 /**
  * Native implementation of the service manager.  Most clients will only
diff --git a/core/java/android/os/SharedMemory.java b/core/java/android/os/SharedMemory.java
index 57a8801..26d9c7d 100644
--- a/core/java/android/os/SharedMemory.java
+++ b/core/java/android/os/SharedMemory.java
@@ -18,7 +18,7 @@
 
 import android.annotation.NonNull;
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.system.ErrnoException;
 import android.system.Os;
 import android.system.OsConstants;
diff --git a/core/java/android/os/ShellCommand.java b/core/java/android/os/ShellCommand.java
index 2fe8726..814aac4 100644
--- a/core/java/android/os/ShellCommand.java
+++ b/core/java/android/os/ShellCommand.java
@@ -16,7 +16,7 @@
 
 package android.os;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.util.Slog;
 
 import com.android.internal.util.FastPrintWriter;
diff --git a/core/java/android/os/StatFs.java b/core/java/android/os/StatFs.java
index 881d0b4..6d1a116 100644
--- a/core/java/android/os/StatFs.java
+++ b/core/java/android/os/StatFs.java
@@ -16,7 +16,7 @@
 
 package android.os;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.system.ErrnoException;
 import android.system.Os;
 import android.system.StructStatVfs;
diff --git a/core/java/android/os/StrictMode.java b/core/java/android/os/StrictMode.java
index 0bf634e..3faaff7 100644
--- a/core/java/android/os/StrictMode.java
+++ b/core/java/android/os/StrictMode.java
@@ -20,10 +20,10 @@
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
 import android.app.ActivityManager;
 import android.app.ActivityThread;
 import android.app.IActivityManager;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
diff --git a/core/java/android/os/SystemClock.java b/core/java/android/os/SystemClock.java
index 210f5d7..29852a8 100644
--- a/core/java/android/os/SystemClock.java
+++ b/core/java/android/os/SystemClock.java
@@ -17,8 +17,8 @@
 package android.os;
 
 import android.annotation.NonNull;
-import android.annotation.UnsupportedAppUsage;
 import android.app.IAlarmManager;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.location.ILocationManager;
 import android.location.LocationTime;
diff --git a/core/java/android/os/SystemProperties.java b/core/java/android/os/SystemProperties.java
index f08e1ff..a681ec0 100644
--- a/core/java/android/os/SystemProperties.java
+++ b/core/java/android/os/SystemProperties.java
@@ -20,7 +20,7 @@
 import android.annotation.Nullable;
 import android.annotation.SystemApi;
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.util.Log;
 import android.util.MutableInt;
 
diff --git a/core/java/android/os/SystemService.java b/core/java/android/os/SystemService.java
index 968c761..5871d2d 100644
--- a/core/java/android/os/SystemService.java
+++ b/core/java/android/os/SystemService.java
@@ -16,9 +16,10 @@
 
 package android.os;
 
+import android.compat.annotation.UnsupportedAppUsage;
+
 import com.google.android.collect.Maps;
 
-import android.annotation.UnsupportedAppUsage;
 import java.util.HashMap;
 import java.util.concurrent.TimeoutException;
 
diff --git a/core/java/android/os/SystemVibrator.java b/core/java/android/os/SystemVibrator.java
index fbd11ca..f585c75 100644
--- a/core/java/android/os/SystemVibrator.java
+++ b/core/java/android/os/SystemVibrator.java
@@ -16,7 +16,7 @@
 
 package android.os;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.media.AudioAttributes;
 import android.util.Log;
diff --git a/core/java/android/os/Trace.java b/core/java/android/os/Trace.java
index e132c11..25584f1 100644
--- a/core/java/android/os/Trace.java
+++ b/core/java/android/os/Trace.java
@@ -17,9 +17,7 @@
 package android.os;
 
 import android.annotation.NonNull;
-import android.annotation.UnsupportedAppUsage;
-
-import com.android.internal.os.Zygote;
+import android.compat.annotation.UnsupportedAppUsage;
 
 import dalvik.annotation.optimization.CriticalNative;
 import dalvik.annotation.optimization.FastNative;
diff --git a/core/java/android/os/UEventObserver.java b/core/java/android/os/UEventObserver.java
index dc98c42..fa30e50 100644
--- a/core/java/android/os/UEventObserver.java
+++ b/core/java/android/os/UEventObserver.java
@@ -16,7 +16,7 @@
 
 package android.os;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.util.Log;
 
 import java.util.ArrayList;
diff --git a/core/java/android/os/UpdateLock.java b/core/java/android/os/UpdateLock.java
index ea273ce..036d095 100644
--- a/core/java/android/os/UpdateLock.java
+++ b/core/java/android/os/UpdateLock.java
@@ -16,7 +16,7 @@
 
 package android.os;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.util.Log;
 
diff --git a/core/java/android/os/UserHandle.java b/core/java/android/os/UserHandle.java
index 45ee4ef..0ec8658 100644
--- a/core/java/android/os/UserHandle.java
+++ b/core/java/android/os/UserHandle.java
@@ -20,8 +20,8 @@
 import android.annotation.NonNull;
 import android.annotation.SystemApi;
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
 import android.annotation.UserIdInt;
+import android.compat.annotation.UnsupportedAppUsage;
 
 import java.io.PrintWriter;
 
diff --git a/core/java/android/os/UserManager.java b/core/java/android/os/UserManager.java
index c15618b..a507e25 100644
--- a/core/java/android/os/UserManager.java
+++ b/core/java/android/os/UserManager.java
@@ -25,12 +25,12 @@
 import android.annotation.SystemApi;
 import android.annotation.SystemService;
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
 import android.annotation.UserIdInt;
 import android.annotation.WorkerThread;
 import android.app.Activity;
 import android.app.ActivityManager;
 import android.app.admin.DevicePolicyManager;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
diff --git a/core/java/android/os/VibrationEffect.java b/core/java/android/os/VibrationEffect.java
index 5769c34..75b4724 100644
--- a/core/java/android/os/VibrationEffect.java
+++ b/core/java/android/os/VibrationEffect.java
@@ -20,6 +20,7 @@
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.annotation.TestApi;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.ContentResolver;
 import android.content.Context;
 import android.hardware.vibrator.V1_0.EffectStrength;
@@ -27,8 +28,6 @@
 import android.net.Uri;
 import android.util.MathUtils;
 
-import dalvik.annotation.compat.UnsupportedAppUsage;
-
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.util.Arrays;
diff --git a/core/java/android/os/Vibrator.java b/core/java/android/os/Vibrator.java
index 6456d72..ccbb0f1 100644
--- a/core/java/android/os/Vibrator.java
+++ b/core/java/android/os/Vibrator.java
@@ -20,8 +20,8 @@
 import android.annotation.Nullable;
 import android.annotation.RequiresPermission;
 import android.annotation.SystemService;
-import android.annotation.UnsupportedAppUsage;
 import android.app.ActivityThread;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.media.AudioAttributes;
 import android.util.Log;
diff --git a/core/java/android/os/WorkSource.java b/core/java/android/os/WorkSource.java
index 825fc64..6846035 100644
--- a/core/java/android/os/WorkSource.java
+++ b/core/java/android/os/WorkSource.java
@@ -4,9 +4,8 @@
 import android.annotation.Nullable;
 import android.annotation.SystemApi;
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
-import android.os.WorkSourceProto;
 import android.provider.Settings;
 import android.provider.Settings.Global;
 import android.util.Log;
diff --git a/core/java/android/os/ZygoteProcess.java b/core/java/android/os/ZygoteProcess.java
index c2d3ecc..016823e 100644
--- a/core/java/android/os/ZygoteProcess.java
+++ b/core/java/android/os/ZygoteProcess.java
@@ -18,7 +18,7 @@
 
 import android.annotation.NonNull;
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.pm.ApplicationInfo;
 import android.net.LocalSocket;
 import android.net.LocalSocketAddress;
diff --git a/core/java/android/os/health/HealthStatsParceler.java b/core/java/android/os/health/HealthStatsParceler.java
index 384342c..f28a974 100644
--- a/core/java/android/os/health/HealthStatsParceler.java
+++ b/core/java/android/os/health/HealthStatsParceler.java
@@ -17,11 +17,10 @@
 package android.os.health;
 
 import android.annotation.TestApi;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Parcel;
 import android.os.Parcelable;
 
-import dalvik.annotation.compat.UnsupportedAppUsage;
-
 /**
  * Class to allow sending the HealthStats through aidl generated glue.
  *
diff --git a/core/java/android/os/health/SystemHealthManager.java b/core/java/android/os/health/SystemHealthManager.java
index a92e28a..6e259ea 100644
--- a/core/java/android/os/health/SystemHealthManager.java
+++ b/core/java/android/os/health/SystemHealthManager.java
@@ -17,14 +17,13 @@
 package android.os.health;
 
 import android.annotation.SystemService;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.os.BatteryStats;
 import android.os.Build;
 import android.os.Process;
 import android.os.RemoteException;
 import android.os.ServiceManager;
-import android.os.ServiceManager.ServiceNotFoundException;
 
 import com.android.internal.app.IBatteryStats;
 
diff --git a/core/java/android/os/storage/DiskInfo.java b/core/java/android/os/storage/DiskInfo.java
index b797324..df3c4d5 100644
--- a/core/java/android/os/storage/DiskInfo.java
+++ b/core/java/android/os/storage/DiskInfo.java
@@ -18,7 +18,7 @@
 
 import android.annotation.NonNull;
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.res.Resources;
 import android.os.Build;
 import android.os.Parcel;
diff --git a/core/java/android/os/storage/StorageEventListener.java b/core/java/android/os/storage/StorageEventListener.java
index 39d5b45..9fd9e4e 100644
--- a/core/java/android/os/storage/StorageEventListener.java
+++ b/core/java/android/os/storage/StorageEventListener.java
@@ -16,7 +16,7 @@
 
 package android.os.storage;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 
 /**
  * Used for receiving notifications from the StorageManager
diff --git a/core/java/android/os/storage/StorageManager.java b/core/java/android/os/storage/StorageManager.java
index 69c1295..c7709b9 100644
--- a/core/java/android/os/storage/StorageManager.java
+++ b/core/java/android/os/storage/StorageManager.java
@@ -40,12 +40,12 @@
 import android.annotation.SystemApi;
 import android.annotation.SystemService;
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
 import android.annotation.WorkerThread;
 import android.app.Activity;
 import android.app.ActivityThread;
 import android.app.AppGlobals;
 import android.app.AppOpsManager;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.ContentResolver;
 import android.content.Context;
 import android.content.Intent;
diff --git a/core/java/android/os/storage/StorageVolume.java b/core/java/android/os/storage/StorageVolume.java
index aefe843..05b45fa 100644
--- a/core/java/android/os/storage/StorageVolume.java
+++ b/core/java/android/os/storage/StorageVolume.java
@@ -19,7 +19,7 @@
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.Intent;
 import android.net.Uri;
diff --git a/core/java/android/os/storage/VolumeInfo.java b/core/java/android/os/storage/VolumeInfo.java
index 7699a05..ff82982 100644
--- a/core/java/android/os/storage/VolumeInfo.java
+++ b/core/java/android/os/storage/VolumeInfo.java
@@ -18,7 +18,7 @@
 
 import android.annotation.NonNull;
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.Intent;
 import android.content.res.Resources;
diff --git a/core/java/android/os/storage/VolumeRecord.java b/core/java/android/os/storage/VolumeRecord.java
index 1a794eb..c497c8b 100644
--- a/core/java/android/os/storage/VolumeRecord.java
+++ b/core/java/android/os/storage/VolumeRecord.java
@@ -16,7 +16,7 @@
 
 package android.os.storage;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Parcel;
 import android.os.Parcelable;
 import android.util.DebugUtils;
diff --git a/core/java/android/preference/DialogPreference.java b/core/java/android/preference/DialogPreference.java
index 32511e9..dfdb57c4 100644
--- a/core/java/android/preference/DialogPreference.java
+++ b/core/java/android/preference/DialogPreference.java
@@ -21,9 +21,9 @@
 import android.annotation.DrawableRes;
 import android.annotation.Nullable;
 import android.annotation.StringRes;
-import android.annotation.UnsupportedAppUsage;
 import android.app.AlertDialog;
 import android.app.Dialog;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.DialogInterface;
 import android.content.SharedPreferences;
diff --git a/core/java/android/preference/EditTextPreference.java b/core/java/android/preference/EditTextPreference.java
index 74c5e3e..af6f184 100644
--- a/core/java/android/preference/EditTextPreference.java
+++ b/core/java/android/preference/EditTextPreference.java
@@ -17,7 +17,7 @@
 package android.preference;
 
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.SharedPreferences;
 import android.content.res.TypedArray;
diff --git a/core/java/android/preference/ListPreference.java b/core/java/android/preference/ListPreference.java
index 830de525..0b64809 100644
--- a/core/java/android/preference/ListPreference.java
+++ b/core/java/android/preference/ListPreference.java
@@ -17,8 +17,8 @@
 package android.preference;
 
 import android.annotation.ArrayRes;
-import android.annotation.UnsupportedAppUsage;
 import android.app.AlertDialog.Builder;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.DialogInterface;
 import android.content.res.TypedArray;
diff --git a/core/java/android/preference/Preference.java b/core/java/android/preference/Preference.java
index e82e60d..f508dda 100644
--- a/core/java/android/preference/Preference.java
+++ b/core/java/android/preference/Preference.java
@@ -21,7 +21,7 @@
 import android.annotation.LayoutRes;
 import android.annotation.Nullable;
 import android.annotation.StringRes;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.Intent;
 import android.content.SharedPreferences;
diff --git a/core/java/android/preference/PreferenceActivity.java b/core/java/android/preference/PreferenceActivity.java
index 4750971..ae4a626 100644
--- a/core/java/android/preference/PreferenceActivity.java
+++ b/core/java/android/preference/PreferenceActivity.java
@@ -19,13 +19,13 @@
 import android.animation.LayoutTransition;
 import android.annotation.Nullable;
 import android.annotation.StringRes;
-import android.annotation.UnsupportedAppUsage;
 import android.annotation.XmlRes;
 import android.app.Fragment;
 import android.app.FragmentBreadCrumbs;
 import android.app.FragmentManager;
 import android.app.FragmentTransaction;
 import android.app.ListActivity;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.Intent;
 import android.content.res.Resources;
diff --git a/core/java/android/preference/PreferenceFragment.java b/core/java/android/preference/PreferenceFragment.java
index d6c069f0..3f6e505 100644
--- a/core/java/android/preference/PreferenceFragment.java
+++ b/core/java/android/preference/PreferenceFragment.java
@@ -17,10 +17,10 @@
 package android.preference;
 
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
 import android.annotation.XmlRes;
 import android.app.Activity;
 import android.app.Fragment;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Intent;
 import android.content.SharedPreferences;
 import android.content.res.TypedArray;
diff --git a/core/java/android/preference/PreferenceGroupAdapter.java b/core/java/android/preference/PreferenceGroupAdapter.java
index dcc5d4c..b263f50 100644
--- a/core/java/android/preference/PreferenceGroupAdapter.java
+++ b/core/java/android/preference/PreferenceGroupAdapter.java
@@ -16,7 +16,7 @@
 
 package android.preference;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.graphics.drawable.Drawable;
 import android.os.Handler;
 import android.preference.Preference.OnPreferenceChangeInternalListener;
diff --git a/core/java/android/preference/PreferenceManager.java b/core/java/android/preference/PreferenceManager.java
index f741bd6..9d3f349 100644
--- a/core/java/android/preference/PreferenceManager.java
+++ b/core/java/android/preference/PreferenceManager.java
@@ -18,9 +18,9 @@
 
 import android.annotation.Nullable;
 import android.annotation.SystemApi;
-import android.annotation.UnsupportedAppUsage;
 import android.annotation.XmlRes;
 import android.app.Activity;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.DialogInterface;
 import android.content.Intent;
diff --git a/core/java/android/preference/PreferenceScreen.java b/core/java/android/preference/PreferenceScreen.java
index a353dbc..01fe2f3 100644
--- a/core/java/android/preference/PreferenceScreen.java
+++ b/core/java/android/preference/PreferenceScreen.java
@@ -16,8 +16,8 @@
 
 package android.preference;
 
-import android.annotation.UnsupportedAppUsage;
 import android.app.Dialog;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.DialogInterface;
 import android.content.res.TypedArray;
diff --git a/core/java/android/preference/RingtonePreference.java b/core/java/android/preference/RingtonePreference.java
index 025aad0..c6d8c08 100644
--- a/core/java/android/preference/RingtonePreference.java
+++ b/core/java/android/preference/RingtonePreference.java
@@ -16,7 +16,7 @@
 
 package android.preference;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.Intent;
 import android.content.res.TypedArray;
diff --git a/core/java/android/preference/SeekBarDialogPreference.java b/core/java/android/preference/SeekBarDialogPreference.java
index 32ef821..46be122 100644
--- a/core/java/android/preference/SeekBarDialogPreference.java
+++ b/core/java/android/preference/SeekBarDialogPreference.java
@@ -16,7 +16,7 @@
 
 package android.preference;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.graphics.drawable.Drawable;
 import android.util.AttributeSet;
diff --git a/core/java/android/preference/SeekBarPreference.java b/core/java/android/preference/SeekBarPreference.java
index 99ab9db..a2852bc 100644
--- a/core/java/android/preference/SeekBarPreference.java
+++ b/core/java/android/preference/SeekBarPreference.java
@@ -16,7 +16,7 @@
 
 package android.preference;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.res.TypedArray;
 import android.os.Parcel;
diff --git a/core/java/android/preference/SeekBarVolumizer.java b/core/java/android/preference/SeekBarVolumizer.java
index 2b3a2ab..5ff98f9 100644
--- a/core/java/android/preference/SeekBarVolumizer.java
+++ b/core/java/android/preference/SeekBarVolumizer.java
@@ -17,8 +17,8 @@
 package android.preference;
 
 import android.annotation.NonNull;
-import android.annotation.UnsupportedAppUsage;
 import android.app.NotificationManager;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
diff --git a/core/java/android/preference/SwitchPreference.java b/core/java/android/preference/SwitchPreference.java
index 9dea1c8..baa023e 100644
--- a/core/java/android/preference/SwitchPreference.java
+++ b/core/java/android/preference/SwitchPreference.java
@@ -17,7 +17,7 @@
 package android.preference;
 
 import android.annotation.StringRes;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.res.TypedArray;
 import android.util.AttributeSet;
diff --git a/core/java/android/preference/TwoStatePreference.java b/core/java/android/preference/TwoStatePreference.java
index bb771d7..5eb5d17 100644
--- a/core/java/android/preference/TwoStatePreference.java
+++ b/core/java/android/preference/TwoStatePreference.java
@@ -17,7 +17,7 @@
 package android.preference;
 
 import android.annotation.StringRes;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.SharedPreferences;
 import android.content.res.TypedArray;
diff --git a/core/java/android/preference/VolumePreference.java b/core/java/android/preference/VolumePreference.java
index a2d5a23..6eb524a 100644
--- a/core/java/android/preference/VolumePreference.java
+++ b/core/java/android/preference/VolumePreference.java
@@ -16,8 +16,8 @@
 
 package android.preference;
 
-import android.annotation.UnsupportedAppUsage;
 import android.app.Dialog;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.res.TypedArray;
 import android.os.Parcel;
diff --git a/core/java/android/print/PrintDocumentAdapter.java b/core/java/android/print/PrintDocumentAdapter.java
index d1b6efc..7ea5655 100644
--- a/core/java/android/print/PrintDocumentAdapter.java
+++ b/core/java/android/print/PrintDocumentAdapter.java
@@ -16,7 +16,7 @@
 
 package android.print;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Bundle;
 import android.os.CancellationSignal;
 import android.os.ParcelFileDescriptor;
diff --git a/core/java/android/print/PrintJobInfo.java b/core/java/android/print/PrintJobInfo.java
index 25f383c..63f38f8 100644
--- a/core/java/android/print/PrintJobInfo.java
+++ b/core/java/android/print/PrintJobInfo.java
@@ -23,7 +23,7 @@
 import android.annotation.Nullable;
 import android.annotation.StringRes;
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.pm.PackageManager;
 import android.content.res.Resources;
 import android.os.Bundle;
diff --git a/core/java/android/print/PrintManager.java b/core/java/android/print/PrintManager.java
index e1ede93..9abce5d 100644
--- a/core/java/android/print/PrintManager.java
+++ b/core/java/android/print/PrintManager.java
@@ -22,9 +22,9 @@
 import android.annotation.RequiresPermission;
 import android.annotation.SystemApi;
 import android.annotation.SystemService;
-import android.annotation.UnsupportedAppUsage;
 import android.app.Activity;
 import android.app.Application.ActivityLifecycleCallbacks;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.IntentSender;
diff --git a/core/java/android/print/PrinterId.java b/core/java/android/print/PrinterId.java
index 42570c6..75ca750 100644
--- a/core/java/android/print/PrinterId.java
+++ b/core/java/android/print/PrinterId.java
@@ -17,7 +17,7 @@
 package android.print;
 
 import android.annotation.NonNull;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.ComponentName;
 import android.os.Parcel;
 import android.os.Parcelable;
diff --git a/core/java/android/provider/Browser.java b/core/java/android/provider/Browser.java
index 30021b4..afa7b80 100644
--- a/core/java/android/provider/Browser.java
+++ b/core/java/android/provider/Browser.java
@@ -16,10 +16,8 @@
 
 package android.provider;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.ContentResolver;
-import android.content.ContentUris;
-import android.content.ContentValues;
 import android.content.Context;
 import android.content.Intent;
 import android.database.Cursor;
@@ -30,8 +28,6 @@
 import android.provider.BrowserContract.Bookmarks;
 import android.provider.BrowserContract.Combined;
 import android.provider.BrowserContract.History;
-import android.provider.BrowserContract.Searches;
-import android.util.Log;
 import android.webkit.WebIconDatabase;
 
 public class Browser {
diff --git a/core/java/android/provider/BrowserContract.java b/core/java/android/provider/BrowserContract.java
index 57dde66..5083b8b2 100644
--- a/core/java/android/provider/BrowserContract.java
+++ b/core/java/android/provider/BrowserContract.java
@@ -17,7 +17,7 @@
 package android.provider;
 
 import android.accounts.Account;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.ContentProviderClient;
 import android.content.ContentProviderOperation;
 import android.content.ContentResolver;
diff --git a/core/java/android/provider/CalendarContract.java b/core/java/android/provider/CalendarContract.java
index 7285166..9c6c92a 100644
--- a/core/java/android/provider/CalendarContract.java
+++ b/core/java/android/provider/CalendarContract.java
@@ -20,11 +20,11 @@
 import android.annotation.SdkConstant;
 import android.annotation.SdkConstant.SdkConstantType;
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
 import android.app.Activity;
 import android.app.AlarmManager;
 import android.app.PendingIntent;
 import android.app.admin.DevicePolicyManager;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.ComponentName;
 import android.content.ContentProviderClient;
 import android.content.ContentResolver;
diff --git a/core/java/android/provider/CallLog.java b/core/java/android/provider/CallLog.java
index 391f3a2..9ffeff9 100644
--- a/core/java/android/provider/CallLog.java
+++ b/core/java/android/provider/CallLog.java
@@ -17,7 +17,7 @@
 
 package android.provider;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.ContentProvider;
 import android.content.ContentResolver;
 import android.content.ContentValues;
diff --git a/core/java/android/provider/ContactsContract.java b/core/java/android/provider/ContactsContract.java
index f10e184..5247311 100644
--- a/core/java/android/provider/ContactsContract.java
+++ b/core/java/android/provider/ContactsContract.java
@@ -21,8 +21,8 @@
 import android.annotation.SdkConstant.SdkConstantType;
 import android.annotation.SystemApi;
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
 import android.app.Activity;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.BroadcastReceiver;
 import android.content.ComponentName;
 import android.content.ContentProviderClient;
diff --git a/core/java/android/provider/ContactsInternal.java b/core/java/android/provider/ContactsInternal.java
index 69c4b9b..aa2a89c 100644
--- a/core/java/android/provider/ContactsInternal.java
+++ b/core/java/android/provider/ContactsInternal.java
@@ -15,15 +15,14 @@
  */
 package android.provider;
 
-import android.annotation.UnsupportedAppUsage;
 import android.app.admin.DevicePolicyManager;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.ActivityNotFoundException;
 import android.content.ContentUris;
 import android.content.Context;
 import android.content.Intent;
 import android.content.UriMatcher;
 import android.net.Uri;
-import android.os.Process;
 import android.os.UserHandle;
 import android.text.TextUtils;
 import android.widget.Toast;
diff --git a/core/java/android/provider/DocumentsContract.java b/core/java/android/provider/DocumentsContract.java
index fd81178..4bbd213 100644
--- a/core/java/android/provider/DocumentsContract.java
+++ b/core/java/android/provider/DocumentsContract.java
@@ -22,7 +22,7 @@
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.annotation.SystemApi;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.ContentInterface;
 import android.content.ContentResolver;
 import android.content.Context;
diff --git a/core/java/android/provider/Downloads.java b/core/java/android/provider/Downloads.java
index 9a384c6..48410a7 100644
--- a/core/java/android/provider/Downloads.java
+++ b/core/java/android/provider/Downloads.java
@@ -16,8 +16,8 @@
 
 package android.provider;
 
-import android.annotation.UnsupportedAppUsage;
 import android.app.DownloadManager;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.net.NetworkPolicyManager;
 import android.net.Uri;
diff --git a/core/java/android/provider/MediaStore.java b/core/java/android/provider/MediaStore.java
index 2299aad..f6cf1d2 100644
--- a/core/java/android/provider/MediaStore.java
+++ b/core/java/android/provider/MediaStore.java
@@ -27,9 +27,9 @@
 import android.annotation.SdkConstant;
 import android.annotation.SdkConstant.SdkConstantType;
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
 import android.app.Activity;
 import android.app.AppGlobals;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.ClipData;
 import android.content.ContentProviderClient;
 import android.content.ContentResolver;
diff --git a/core/java/android/provider/Settings.java b/core/java/android/provider/Settings.java
index c7e7145..1f3ae09 100644
--- a/core/java/android/provider/Settings.java
+++ b/core/java/android/provider/Settings.java
@@ -37,7 +37,6 @@
 import android.annotation.SdkConstant.SdkConstantType;
 import android.annotation.SystemApi;
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
 import android.annotation.UserIdInt;
 import android.app.ActivityThread;
 import android.app.AppOpsManager;
@@ -46,6 +45,7 @@
 import android.app.NotificationManager;
 import android.app.SearchManager;
 import android.app.WallpaperManager;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.ComponentName;
 import android.content.ContentResolver;
 import android.content.ContentValues;
diff --git a/core/java/android/provider/Telephony.java b/core/java/android/provider/Telephony.java
index 13d167d..28d31e1 100644
--- a/core/java/android/provider/Telephony.java
+++ b/core/java/android/provider/Telephony.java
@@ -24,7 +24,7 @@
 import android.annotation.SdkConstant.SdkConstantType;
 import android.annotation.SystemApi;
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.ComponentName;
 import android.content.ContentResolver;
 import android.content.ContentValues;
diff --git a/core/java/android/se/omapi/SEService.java b/core/java/android/se/omapi/SEService.java
index d646e23..00060ab 100644
--- a/core/java/android/se/omapi/SEService.java
+++ b/core/java/android/se/omapi/SEService.java
@@ -22,14 +22,11 @@
 
 package android.se.omapi;
 
-import android.app.ActivityThread;
 import android.annotation.NonNull;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
 import android.content.ServiceConnection;
-import android.content.pm.IPackageManager;
-import android.content.pm.PackageManager;
 import android.os.IBinder;
 import android.os.RemoteException;
 import android.util.Log;
@@ -143,10 +140,6 @@
             throw new NullPointerException("Arguments must not be null");
         }
 
-        if (!hasOMAPIReaders()) {
-            throw new UnsupportedOperationException("Device does not support any OMAPI reader");
-        }
-
         mContext = context;
         mSEListener.mListener = listener;
         mSEListener.mExecutor = executor;
@@ -277,23 +270,4 @@
             throw new IllegalStateException(e.getMessage());
         }
     }
-
-    /**
-     * Helper to check if this device support any OMAPI readers
-     */
-    private static boolean hasOMAPIReaders() {
-        IPackageManager pm = ActivityThread.getPackageManager();
-        if (pm == null) {
-            Log.e(TAG, "Cannot get package manager, assuming OMAPI readers supported");
-            return true;
-        }
-        try {
-            return pm.hasSystemFeature(PackageManager.FEATURE_SE_OMAPI_UICC, 0)
-                || pm.hasSystemFeature(PackageManager.FEATURE_SE_OMAPI_ESE, 0)
-                || pm.hasSystemFeature(PackageManager.FEATURE_SE_OMAPI_SD, 0);
-        } catch (RemoteException e) {
-            Log.e(TAG, "Package manager query failed, assuming OMAPI readers supported", e);
-            return true;
-        }
-    }
 }
diff --git a/core/java/android/security/KeystoreArguments.java b/core/java/android/security/KeystoreArguments.java
index e634234..a59c4e0 100644
--- a/core/java/android/security/KeystoreArguments.java
+++ b/core/java/android/security/KeystoreArguments.java
@@ -16,7 +16,7 @@
 
 package android.security;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Parcel;
 import android.os.Parcelable;
 
diff --git a/core/java/android/security/keymaster/ExportResult.java b/core/java/android/security/keymaster/ExportResult.java
index 1be5ae9..037b852 100644
--- a/core/java/android/security/keymaster/ExportResult.java
+++ b/core/java/android/security/keymaster/ExportResult.java
@@ -16,7 +16,7 @@
 
 package android.security.keymaster;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Parcel;
 import android.os.Parcelable;
 
diff --git a/core/java/android/security/keymaster/KeyCharacteristics.java b/core/java/android/security/keymaster/KeyCharacteristics.java
index 2eb2cef..d8382fa 100644
--- a/core/java/android/security/keymaster/KeyCharacteristics.java
+++ b/core/java/android/security/keymaster/KeyCharacteristics.java
@@ -16,7 +16,7 @@
 
 package android.security.keymaster;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Parcel;
 import android.os.Parcelable;
 
diff --git a/core/java/android/security/keymaster/KeymasterArguments.java b/core/java/android/security/keymaster/KeymasterArguments.java
index d2dbdec..e009e12 100644
--- a/core/java/android/security/keymaster/KeymasterArguments.java
+++ b/core/java/android/security/keymaster/KeymasterArguments.java
@@ -16,7 +16,7 @@
 
 package android.security.keymaster;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Parcel;
 import android.os.Parcelable;
 
diff --git a/core/java/android/security/keymaster/KeymasterBlob.java b/core/java/android/security/keymaster/KeymasterBlob.java
index 6a2024f..68365bf 100644
--- a/core/java/android/security/keymaster/KeymasterBlob.java
+++ b/core/java/android/security/keymaster/KeymasterBlob.java
@@ -16,7 +16,7 @@
 
 package android.security.keymaster;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Parcel;
 import android.os.Parcelable;
 
diff --git a/core/java/android/security/keymaster/KeymasterBlobArgument.java b/core/java/android/security/keymaster/KeymasterBlobArgument.java
index fc562bd..81b08c5 100644
--- a/core/java/android/security/keymaster/KeymasterBlobArgument.java
+++ b/core/java/android/security/keymaster/KeymasterBlobArgument.java
@@ -16,7 +16,7 @@
 
 package android.security.keymaster;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Parcel;
 
 /**
diff --git a/core/java/android/security/keymaster/KeymasterBooleanArgument.java b/core/java/android/security/keymaster/KeymasterBooleanArgument.java
index 4286aa0..25b2ac4 100644
--- a/core/java/android/security/keymaster/KeymasterBooleanArgument.java
+++ b/core/java/android/security/keymaster/KeymasterBooleanArgument.java
@@ -16,7 +16,7 @@
 
 package android.security.keymaster;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Parcel;
 
 /**
diff --git a/core/java/android/security/keymaster/KeymasterDateArgument.java b/core/java/android/security/keymaster/KeymasterDateArgument.java
index 3e04c15..218f488 100644
--- a/core/java/android/security/keymaster/KeymasterDateArgument.java
+++ b/core/java/android/security/keymaster/KeymasterDateArgument.java
@@ -16,8 +16,9 @@
 
 package android.security.keymaster;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Parcel;
+
 import java.util.Date;
 
 /**
diff --git a/core/java/android/security/keymaster/KeymasterIntArgument.java b/core/java/android/security/keymaster/KeymasterIntArgument.java
index 4aadce4..01d38c7 100644
--- a/core/java/android/security/keymaster/KeymasterIntArgument.java
+++ b/core/java/android/security/keymaster/KeymasterIntArgument.java
@@ -16,7 +16,7 @@
 
 package android.security.keymaster;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Parcel;
 
 /**
diff --git a/core/java/android/security/keymaster/KeymasterLongArgument.java b/core/java/android/security/keymaster/KeymasterLongArgument.java
index bc2255e..3ac27cc 100644
--- a/core/java/android/security/keymaster/KeymasterLongArgument.java
+++ b/core/java/android/security/keymaster/KeymasterLongArgument.java
@@ -16,7 +16,7 @@
 
 package android.security.keymaster;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Parcel;
 
 /**
diff --git a/core/java/android/security/keymaster/OperationResult.java b/core/java/android/security/keymaster/OperationResult.java
index c278eb3..b4e155a 100644
--- a/core/java/android/security/keymaster/OperationResult.java
+++ b/core/java/android/security/keymaster/OperationResult.java
@@ -16,7 +16,7 @@
 
 package android.security.keymaster;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.IBinder;
 import android.os.Parcel;
 import android.os.Parcelable;
diff --git a/core/java/android/security/net/config/RootTrustManager.java b/core/java/android/security/net/config/RootTrustManager.java
index d8936d9..58dc4ba 100644
--- a/core/java/android/security/net/config/RootTrustManager.java
+++ b/core/java/android/security/net/config/RootTrustManager.java
@@ -16,15 +16,16 @@
 
 package android.security.net.config;
 
+import android.compat.annotation.UnsupportedAppUsage;
+
 import java.net.Socket;
 import java.security.cert.CertificateException;
 import java.security.cert.X509Certificate;
 import java.util.List;
 
-import android.annotation.UnsupportedAppUsage;
-import javax.net.ssl.SSLSocket;
 import javax.net.ssl.SSLEngine;
 import javax.net.ssl.SSLSession;
+import javax.net.ssl.SSLSocket;
 import javax.net.ssl.X509ExtendedTrustManager;
 
 /**
diff --git a/core/java/android/service/dreams/DreamService.java b/core/java/android/service/dreams/DreamService.java
index 38de794..de4a551 100644
--- a/core/java/android/service/dreams/DreamService.java
+++ b/core/java/android/service/dreams/DreamService.java
@@ -21,9 +21,9 @@
 import android.annotation.Nullable;
 import android.annotation.SdkConstant;
 import android.annotation.SdkConstant.SdkConstantType;
-import android.annotation.UnsupportedAppUsage;
 import android.app.AlarmManager;
 import android.app.Service;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Intent;
 import android.graphics.PixelFormat;
 import android.graphics.drawable.ColorDrawable;
diff --git a/core/java/android/service/notification/NotificationListenerService.java b/core/java/android/service/notification/NotificationListenerService.java
index b44c9d5..5da34a3 100644
--- a/core/java/android/service/notification/NotificationListenerService.java
+++ b/core/java/android/service/notification/NotificationListenerService.java
@@ -22,7 +22,6 @@
 import android.annotation.SdkConstant;
 import android.annotation.SystemApi;
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
 import android.app.ActivityManager;
 import android.app.INotificationManager;
 import android.app.Notification;
@@ -33,6 +32,7 @@
 import android.app.Person;
 import android.app.Service;
 import android.companion.CompanionDeviceManager;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
diff --git a/core/java/android/service/notification/StatusBarNotification.java b/core/java/android/service/notification/StatusBarNotification.java
index 905c781..d8ea971 100644
--- a/core/java/android/service/notification/StatusBarNotification.java
+++ b/core/java/android/service/notification/StatusBarNotification.java
@@ -17,10 +17,10 @@
 package android.service.notification;
 
 import android.annotation.NonNull;
-import android.annotation.UnsupportedAppUsage;
 import android.app.Notification;
 import android.app.NotificationManager;
 import android.app.Person;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.pm.ApplicationInfo;
 import android.content.pm.PackageManager;
diff --git a/core/java/android/service/notification/ZenModeConfig.java b/core/java/android/service/notification/ZenModeConfig.java
index 93bcdbf..9e7af1f 100644
--- a/core/java/android/service/notification/ZenModeConfig.java
+++ b/core/java/android/service/notification/ZenModeConfig.java
@@ -20,11 +20,11 @@
 import static android.app.NotificationManager.Policy.SUPPRESSED_EFFECT_LIGHTS;
 import static android.app.NotificationManager.Policy.SUPPRESSED_EFFECT_PEEK;
 
-import android.annotation.UnsupportedAppUsage;
 import android.app.ActivityManager;
 import android.app.AlarmManager;
 import android.app.NotificationManager;
 import android.app.NotificationManager.Policy;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.pm.ApplicationInfo;
diff --git a/core/java/android/service/voice/AlwaysOnHotwordDetector.java b/core/java/android/service/voice/AlwaysOnHotwordDetector.java
index bd953ca..e6b1922 100644
--- a/core/java/android/service/voice/AlwaysOnHotwordDetector.java
+++ b/core/java/android/service/voice/AlwaysOnHotwordDetector.java
@@ -19,8 +19,8 @@
 import android.annotation.IntDef;
 import android.annotation.NonNull;
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
 import android.app.Activity;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Intent;
 import android.hardware.soundtrigger.IRecognitionStatusCallback;
 import android.hardware.soundtrigger.KeyphraseEnrollmentInfo;
@@ -32,7 +32,6 @@
 import android.hardware.soundtrigger.SoundTrigger.KeyphraseSoundModel;
 import android.hardware.soundtrigger.SoundTrigger.ModuleProperties;
 import android.hardware.soundtrigger.SoundTrigger.RecognitionConfig;
-import android.hardware.soundtrigger.SoundTrigger.RecognitionEvent;
 import android.media.AudioFormat;
 import android.os.AsyncTask;
 import android.os.Handler;
diff --git a/core/java/android/service/voice/VoiceInteractionService.java b/core/java/android/service/voice/VoiceInteractionService.java
index 0de17ca..36e057f 100644
--- a/core/java/android/service/voice/VoiceInteractionService.java
+++ b/core/java/android/service/voice/VoiceInteractionService.java
@@ -18,8 +18,8 @@
 
 import android.annotation.NonNull;
 import android.annotation.SdkConstant;
-import android.annotation.UnsupportedAppUsage;
 import android.app.Service;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
diff --git a/core/java/android/service/vr/VrListenerService.java b/core/java/android/service/vr/VrListenerService.java
index 3c38495..2758ace 100644
--- a/core/java/android/service/vr/VrListenerService.java
+++ b/core/java/android/service/vr/VrListenerService.java
@@ -18,9 +18,9 @@
 
 import android.annotation.NonNull;
 import android.annotation.SdkConstant;
-import android.annotation.UnsupportedAppUsage;
 import android.app.ActivityManager;
 import android.app.Service;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
diff --git a/core/java/android/service/wallpaper/Android.bp b/core/java/android/service/wallpaper/Android.bp
index aa6123f..ffbdb03 100644
--- a/core/java/android/service/wallpaper/Android.bp
+++ b/core/java/android/service/wallpaper/Android.bp
@@ -6,6 +6,8 @@
         "I*.aidl",
     ],
 
+    libs: ["unsupportedappusage"],
+
     // Enforce that the library is built against java 8 so that there are
     // no compatibility issues with launcher
     java_version: "1.8",
diff --git a/core/java/android/service/wallpaper/WallpaperService.java b/core/java/android/service/wallpaper/WallpaperService.java
index d645e3f..3cb3ec3 100644
--- a/core/java/android/service/wallpaper/WallpaperService.java
+++ b/core/java/android/service/wallpaper/WallpaperService.java
@@ -20,11 +20,11 @@
 import android.annotation.SdkConstant;
 import android.annotation.SdkConstant.SdkConstantType;
 import android.annotation.SystemApi;
-import android.annotation.UnsupportedAppUsage;
 import android.app.Service;
 import android.app.WallpaperColors;
 import android.app.WallpaperInfo;
 import android.app.WallpaperManager;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.Intent;
 import android.content.res.TypedArray;
diff --git a/core/java/android/speech/tts/TextToSpeech.java b/core/java/android/speech/tts/TextToSpeech.java
index 100774c..f3650d6 100644
--- a/core/java/android/speech/tts/TextToSpeech.java
+++ b/core/java/android/speech/tts/TextToSpeech.java
@@ -20,7 +20,7 @@
 import android.annotation.RawRes;
 import android.annotation.SdkConstant;
 import android.annotation.SdkConstant.SdkConstantType;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.ComponentName;
 import android.content.ContentResolver;
 import android.content.Context;
diff --git a/core/java/android/speech/tts/TtsEngines.java b/core/java/android/speech/tts/TtsEngines.java
index 2fab404..a8aea7c 100644
--- a/core/java/android/speech/tts/TtsEngines.java
+++ b/core/java/android/speech/tts/TtsEngines.java
@@ -18,7 +18,7 @@
 import static android.provider.Settings.Secure.getString;
 
 import android.annotation.NonNull;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.Intent;
 import android.content.pm.ApplicationInfo;
diff --git a/core/java/android/telephony/PhoneStateListener.java b/core/java/android/telephony/PhoneStateListener.java
index 7841f99..26ed5c9 100644
--- a/core/java/android/telephony/PhoneStateListener.java
+++ b/core/java/android/telephony/PhoneStateListener.java
@@ -21,7 +21,7 @@
 import android.annotation.RequiresPermission;
 import android.annotation.SystemApi;
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Binder;
 import android.os.Build;
 import android.os.Handler;
diff --git a/core/java/android/telephony/Rlog.java b/core/java/android/telephony/Rlog.java
index cdab2dc..2afdd33 100644
--- a/core/java/android/telephony/Rlog.java
+++ b/core/java/android/telephony/Rlog.java
@@ -16,12 +16,11 @@
 
 package android.telephony;
 
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Build;
 import android.text.TextUtils;
-import android.util.Log;
-
-import android.annotation.UnsupportedAppUsage;
 import android.util.Base64;
+import android.util.Log;
 
 import java.security.MessageDigest;
 import java.security.NoSuchAlgorithmException;
diff --git a/core/java/android/text/AndroidBidi.java b/core/java/android/text/AndroidBidi.java
index bb7fb44..f1e2181 100644
--- a/core/java/android/text/AndroidBidi.java
+++ b/core/java/android/text/AndroidBidi.java
@@ -16,7 +16,7 @@
 
 package android.text;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.icu.lang.UCharacter;
 import android.icu.lang.UCharacterDirection;
 import android.icu.lang.UProperty;
diff --git a/core/java/android/text/BoringLayout.java b/core/java/android/text/BoringLayout.java
index cf6987c..3ee1a90 100644
--- a/core/java/android/text/BoringLayout.java
+++ b/core/java/android/text/BoringLayout.java
@@ -16,7 +16,7 @@
 
 package android.text;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.graphics.Canvas;
 import android.graphics.Paint;
 import android.graphics.Path;
diff --git a/core/java/android/text/DynamicLayout.java b/core/java/android/text/DynamicLayout.java
index 32982f9..c60d446 100644
--- a/core/java/android/text/DynamicLayout.java
+++ b/core/java/android/text/DynamicLayout.java
@@ -20,7 +20,7 @@
 import android.annotation.IntRange;
 import android.annotation.NonNull;
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.graphics.Paint;
 import android.graphics.Rect;
 import android.os.Build;
diff --git a/core/java/android/text/FontConfig.java b/core/java/android/text/FontConfig.java
index 19c55d5..b5688a4 100644
--- a/core/java/android/text/FontConfig.java
+++ b/core/java/android/text/FontConfig.java
@@ -21,7 +21,7 @@
 import android.annotation.IntDef;
 import android.annotation.NonNull;
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.graphics.fonts.FontVariationAxis;
 import android.net.Uri;
 
diff --git a/core/java/android/text/Html.java b/core/java/android/text/Html.java
index 18f8db2..55af087 100644
--- a/core/java/android/text/Html.java
+++ b/core/java/android/text/Html.java
@@ -16,9 +16,9 @@
 
 package android.text;
 
-import android.annotation.UnsupportedAppUsage;
 import android.app.ActivityThread;
 import android.app.Application;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.res.Resources;
 import android.graphics.Color;
 import android.graphics.Typeface;
diff --git a/core/java/android/text/InputFilter.java b/core/java/android/text/InputFilter.java
index a9a7b2f..96e7bd0 100644
--- a/core/java/android/text/InputFilter.java
+++ b/core/java/android/text/InputFilter.java
@@ -17,7 +17,7 @@
 package android.text;
 
 import android.annotation.NonNull;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 
 import com.android.internal.util.Preconditions;
 
diff --git a/core/java/android/text/Layout.java b/core/java/android/text/Layout.java
index 2c2c295..8a4497a 100644
--- a/core/java/android/text/Layout.java
+++ b/core/java/android/text/Layout.java
@@ -18,7 +18,7 @@
 
 import android.annotation.IntDef;
 import android.annotation.IntRange;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.graphics.Canvas;
 import android.graphics.Paint;
 import android.graphics.Path;
diff --git a/core/java/android/text/Selection.java b/core/java/android/text/Selection.java
index 68199a4..57c1d23 100644
--- a/core/java/android/text/Selection.java
+++ b/core/java/android/text/Selection.java
@@ -17,7 +17,7 @@
 package android.text;
 
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 
 import java.text.BreakIterator;
 
diff --git a/core/java/android/text/SpanSet.java b/core/java/android/text/SpanSet.java
index 362825a..81bdd65 100644
--- a/core/java/android/text/SpanSet.java
+++ b/core/java/android/text/SpanSet.java
@@ -16,7 +16,8 @@
 
 package android.text;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
+
 import java.lang.reflect.Array;
 import java.util.Arrays;
 
diff --git a/core/java/android/text/SpannableStringBuilder.java b/core/java/android/text/SpannableStringBuilder.java
index 0d29da0..ac27e3d 100644
--- a/core/java/android/text/SpannableStringBuilder.java
+++ b/core/java/android/text/SpannableStringBuilder.java
@@ -17,7 +17,7 @@
 package android.text;
 
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.graphics.BaseCanvas;
 import android.graphics.Paint;
 import android.util.Log;
diff --git a/core/java/android/text/SpannableStringInternal.java b/core/java/android/text/SpannableStringInternal.java
index a986633..b85ef76 100644
--- a/core/java/android/text/SpannableStringInternal.java
+++ b/core/java/android/text/SpannableStringInternal.java
@@ -16,7 +16,7 @@
 
 package android.text;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 
 import com.android.internal.util.ArrayUtils;
 import com.android.internal.util.GrowingArrayUtils;
diff --git a/core/java/android/text/StaticLayout.java b/core/java/android/text/StaticLayout.java
index 69cfc03..85e2d98 100644
--- a/core/java/android/text/StaticLayout.java
+++ b/core/java/android/text/StaticLayout.java
@@ -20,7 +20,7 @@
 import android.annotation.IntRange;
 import android.annotation.NonNull;
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.graphics.Paint;
 import android.graphics.text.LineBreaker;
 import android.os.Build;
diff --git a/core/java/android/text/TextLine.java b/core/java/android/text/TextLine.java
index 1c50d73..3c51fa7 100644
--- a/core/java/android/text/TextLine.java
+++ b/core/java/android/text/TextLine.java
@@ -19,7 +19,7 @@
 import android.annotation.IntRange;
 import android.annotation.NonNull;
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.graphics.Canvas;
 import android.graphics.Paint;
 import android.graphics.Paint.FontMetricsInt;
diff --git a/core/java/android/text/TextPaint.java b/core/java/android/text/TextPaint.java
index d5aad33..73825b1 100644
--- a/core/java/android/text/TextPaint.java
+++ b/core/java/android/text/TextPaint.java
@@ -18,7 +18,7 @@
 
 import android.annotation.ColorInt;
 import android.annotation.Px;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.graphics.Paint;
 
 /**
diff --git a/core/java/android/text/TextUtils.java b/core/java/android/text/TextUtils.java
index 81643e9..788d98b 100644
--- a/core/java/android/text/TextUtils.java
+++ b/core/java/android/text/TextUtils.java
@@ -24,7 +24,7 @@
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.annotation.PluralsRes;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.res.Resources;
 import android.icu.lang.UCharacter;
diff --git a/core/java/android/text/format/DateFormat.java b/core/java/android/text/format/DateFormat.java
index 3c8de94..0863a81 100755
--- a/core/java/android/text/format/DateFormat.java
+++ b/core/java/android/text/format/DateFormat.java
@@ -17,9 +17,8 @@
 package android.text.format;
 
 import android.annotation.NonNull;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
-import android.os.UserHandle;
 import android.provider.Settings;
 import android.text.SpannableStringBuilder;
 import android.text.Spanned;
diff --git a/core/java/android/text/format/DateUtils.java b/core/java/android/text/format/DateUtils.java
index 90625183..f236f19 100644
--- a/core/java/android/text/format/DateUtils.java
+++ b/core/java/android/text/format/DateUtils.java
@@ -16,7 +16,7 @@
 
 package android.text.format;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.res.Configuration;
 import android.content.res.Resources;
diff --git a/core/java/android/text/format/Formatter.java b/core/java/android/text/format/Formatter.java
index d7baa10..17d3ae4 100644
--- a/core/java/android/text/format/Formatter.java
+++ b/core/java/android/text/format/Formatter.java
@@ -18,7 +18,7 @@
 
 import android.annotation.NonNull;
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.res.Resources;
 import android.icu.text.MeasureFormat;
diff --git a/core/java/android/text/method/AllCapsTransformationMethod.java b/core/java/android/text/method/AllCapsTransformationMethod.java
index 5a7c98d..305b056 100644
--- a/core/java/android/text/method/AllCapsTransformationMethod.java
+++ b/core/java/android/text/method/AllCapsTransformationMethod.java
@@ -17,7 +17,7 @@
 
 import android.annotation.NonNull;
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.graphics.Rect;
 import android.text.Spanned;
diff --git a/core/java/android/text/method/HideReturnsTransformationMethod.java b/core/java/android/text/method/HideReturnsTransformationMethod.java
index 440a4b1..40ce871 100644
--- a/core/java/android/text/method/HideReturnsTransformationMethod.java
+++ b/core/java/android/text/method/HideReturnsTransformationMethod.java
@@ -16,7 +16,7 @@
 
 package android.text.method;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Build;
 
 /**
diff --git a/core/java/android/text/method/LinkMovementMethod.java b/core/java/android/text/method/LinkMovementMethod.java
index a0c44a8..c544c41 100644
--- a/core/java/android/text/method/LinkMovementMethod.java
+++ b/core/java/android/text/method/LinkMovementMethod.java
@@ -16,7 +16,7 @@
 
 package android.text.method;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Build;
 import android.text.Layout;
 import android.text.NoCopySpan;
diff --git a/core/java/android/text/method/MetaKeyKeyListener.java b/core/java/android/text/method/MetaKeyKeyListener.java
index ec7ed34b..d1d7c96 100644
--- a/core/java/android/text/method/MetaKeyKeyListener.java
+++ b/core/java/android/text/method/MetaKeyKeyListener.java
@@ -16,7 +16,7 @@
 
 package android.text.method;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.text.Editable;
 import android.text.NoCopySpan;
 import android.text.Spannable;
diff --git a/core/java/android/text/method/PasswordTransformationMethod.java b/core/java/android/text/method/PasswordTransformationMethod.java
index c96fc5d..53553be 100644
--- a/core/java/android/text/method/PasswordTransformationMethod.java
+++ b/core/java/android/text/method/PasswordTransformationMethod.java
@@ -16,7 +16,7 @@
 
 package android.text.method;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.graphics.Rect;
 import android.os.Build;
 import android.os.Handler;
diff --git a/core/java/android/text/method/TransformationMethod2.java b/core/java/android/text/method/TransformationMethod2.java
index 0bf401a..8d5ec24 100644
--- a/core/java/android/text/method/TransformationMethod2.java
+++ b/core/java/android/text/method/TransformationMethod2.java
@@ -15,7 +15,7 @@
  */
 package android.text.method;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 
 /**
  * TransformationMethod2 extends the TransformationMethod interface
diff --git a/core/java/android/text/method/WordIterator.java b/core/java/android/text/method/WordIterator.java
index 313567a..d766186 100644
--- a/core/java/android/text/method/WordIterator.java
+++ b/core/java/android/text/method/WordIterator.java
@@ -17,7 +17,7 @@
 package android.text.method;
 
 import android.annotation.NonNull;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.icu.lang.UCharacter;
 import android.icu.lang.UProperty;
 import android.icu.text.BreakIterator;
diff --git a/core/java/android/text/style/BulletSpan.java b/core/java/android/text/style/BulletSpan.java
index 9b1dfbf..ad61788 100644
--- a/core/java/android/text/style/BulletSpan.java
+++ b/core/java/android/text/style/BulletSpan.java
@@ -21,7 +21,7 @@
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.annotation.Px;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.graphics.Canvas;
 import android.graphics.Paint;
 import android.os.Build;
diff --git a/core/java/android/text/style/DynamicDrawableSpan.java b/core/java/android/text/style/DynamicDrawableSpan.java
index 1a508a1..f37e423 100644
--- a/core/java/android/text/style/DynamicDrawableSpan.java
+++ b/core/java/android/text/style/DynamicDrawableSpan.java
@@ -22,7 +22,7 @@
 import android.annotation.IntRange;
 import android.annotation.NonNull;
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.graphics.Canvas;
 import android.graphics.Paint;
 import android.graphics.Rect;
diff --git a/core/java/android/text/style/EasyEditSpan.java b/core/java/android/text/style/EasyEditSpan.java
index bfb2873..b23c2b7 100644
--- a/core/java/android/text/style/EasyEditSpan.java
+++ b/core/java/android/text/style/EasyEditSpan.java
@@ -17,8 +17,8 @@
 package android.text.style;
 
 import android.annotation.NonNull;
-import android.annotation.UnsupportedAppUsage;
 import android.app.PendingIntent;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Parcel;
 import android.text.ParcelableSpan;
 import android.text.TextUtils;
diff --git a/core/java/android/text/style/ImageSpan.java b/core/java/android/text/style/ImageSpan.java
index 98f58be..ec55aeb 100644
--- a/core/java/android/text/style/ImageSpan.java
+++ b/core/java/android/text/style/ImageSpan.java
@@ -19,7 +19,7 @@
 import android.annotation.DrawableRes;
 import android.annotation.NonNull;
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
diff --git a/core/java/android/text/style/SpellCheckSpan.java b/core/java/android/text/style/SpellCheckSpan.java
index 6ffde38..e8ec3c6 100644
--- a/core/java/android/text/style/SpellCheckSpan.java
+++ b/core/java/android/text/style/SpellCheckSpan.java
@@ -16,7 +16,7 @@
 
 package android.text.style;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Parcel;
 import android.text.ParcelableSpan;
 import android.text.TextUtils;
diff --git a/core/java/android/text/style/SuggestionRangeSpan.java b/core/java/android/text/style/SuggestionRangeSpan.java
index d958dde..2b04a7a 100644
--- a/core/java/android/text/style/SuggestionRangeSpan.java
+++ b/core/java/android/text/style/SuggestionRangeSpan.java
@@ -16,7 +16,7 @@
 
 package android.text.style;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Parcel;
 import android.text.ParcelableSpan;
 import android.text.TextPaint;
diff --git a/core/java/android/text/style/SuggestionSpan.java b/core/java/android/text/style/SuggestionSpan.java
index c000ae3..be01bfb 100644
--- a/core/java/android/text/style/SuggestionSpan.java
+++ b/core/java/android/text/style/SuggestionSpan.java
@@ -19,7 +19,7 @@
 import android.annotation.ColorInt;
 import android.annotation.NonNull;
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.res.TypedArray;
 import android.graphics.Color;
diff --git a/core/java/android/text/util/Linkify.java b/core/java/android/text/util/Linkify.java
index df54209..6931a32 100644
--- a/core/java/android/text/util/Linkify.java
+++ b/core/java/android/text/util/Linkify.java
@@ -19,7 +19,7 @@
 import android.annotation.IntDef;
 import android.annotation.NonNull;
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.telephony.PhoneNumberUtils;
 import android.telephony.TelephonyManager;
diff --git a/core/java/android/transition/ChangeBounds.java b/core/java/android/transition/ChangeBounds.java
index de182da..59a05ac 100644
--- a/core/java/android/transition/ChangeBounds.java
+++ b/core/java/android/transition/ChangeBounds.java
@@ -22,7 +22,7 @@
 import android.animation.ObjectAnimator;
 import android.animation.PropertyValuesHolder;
 import android.animation.RectEvaluator;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.res.TypedArray;
 import android.graphics.Bitmap;
diff --git a/core/java/android/transition/Scene.java b/core/java/android/transition/Scene.java
index 8d4db54..52a97e3 100644
--- a/core/java/android/transition/Scene.java
+++ b/core/java/android/transition/Scene.java
@@ -18,7 +18,7 @@
 
 import android.annotation.NonNull;
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.os.Build;
 import android.util.SparseArray;
diff --git a/core/java/android/transition/Transition.java b/core/java/android/transition/Transition.java
index 0feab4d..e511584 100644
--- a/core/java/android/transition/Transition.java
+++ b/core/java/android/transition/Transition.java
@@ -20,7 +20,7 @@
 import android.animation.AnimatorListenerAdapter;
 import android.animation.TimeInterpolator;
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.res.TypedArray;
 import android.graphics.Path;
diff --git a/core/java/android/transition/TransitionManager.java b/core/java/android/transition/TransitionManager.java
index 0e5252e..1b0612e 100644
--- a/core/java/android/transition/TransitionManager.java
+++ b/core/java/android/transition/TransitionManager.java
@@ -17,7 +17,7 @@
 package android.transition;
 
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.util.ArrayMap;
 import android.util.Log;
diff --git a/core/java/android/util/ArrayMap.java b/core/java/android/util/ArrayMap.java
index d899dde..5643d5a 100644
--- a/core/java/android/util/ArrayMap.java
+++ b/core/java/android/util/ArrayMap.java
@@ -16,7 +16,7 @@
 
 package android.util;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 
 import com.android.internal.util.ArrayUtils;
 
diff --git a/core/java/android/util/ArraySet.java b/core/java/android/util/ArraySet.java
index d6a35e1..489d579 100644
--- a/core/java/android/util/ArraySet.java
+++ b/core/java/android/util/ArraySet.java
@@ -18,7 +18,7 @@
 
 import android.annotation.Nullable;
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 
 import libcore.util.EmptyArray;
 
diff --git a/core/java/android/util/Base64.java b/core/java/android/util/Base64.java
index ecc0c9c..92abd7c 100644
--- a/core/java/android/util/Base64.java
+++ b/core/java/android/util/Base64.java
@@ -16,7 +16,8 @@
 
 package android.util;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
+
 import java.io.UnsupportedEncodingException;
 
 /**
diff --git a/core/java/android/util/Base64OutputStream.java b/core/java/android/util/Base64OutputStream.java
index 230a3a5..48fadeb 100644
--- a/core/java/android/util/Base64OutputStream.java
+++ b/core/java/android/util/Base64OutputStream.java
@@ -16,7 +16,8 @@
 
 package android.util;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
+
 import java.io.FilterOutputStream;
 import java.io.IOException;
 import java.io.OutputStream;
diff --git a/core/java/android/util/DebugUtils.java b/core/java/android/util/DebugUtils.java
index 55d114b..1b4905a 100644
--- a/core/java/android/util/DebugUtils.java
+++ b/core/java/android/util/DebugUtils.java
@@ -16,7 +16,7 @@
 
 package android.util;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Build;
 
 import java.io.PrintWriter;
diff --git a/core/java/android/util/DisplayMetrics.java b/core/java/android/util/DisplayMetrics.java
index 7c7223c..4c08b59 100755
--- a/core/java/android/util/DisplayMetrics.java
+++ b/core/java/android/util/DisplayMetrics.java
@@ -16,7 +16,7 @@
 
 package android.util;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.SystemProperties;
 
 
diff --git a/core/java/android/util/EventLog.java b/core/java/android/util/EventLog.java
index 65d825a..c9dc05b 100644
--- a/core/java/android/util/EventLog.java
+++ b/core/java/android/util/EventLog.java
@@ -17,7 +17,7 @@
 package android.util;
 
 import android.annotation.SystemApi;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 
 import java.io.BufferedReader;
 import java.io.FileReader;
diff --git a/core/java/android/util/IconDrawableFactory.java b/core/java/android/util/IconDrawableFactory.java
index d90b65e..be10d94 100644
--- a/core/java/android/util/IconDrawableFactory.java
+++ b/core/java/android/util/IconDrawableFactory.java
@@ -15,8 +15,8 @@
  */
 package android.util;
 
-import android.annotation.UnsupportedAppUsage;
 import android.annotation.UserIdInt;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.pm.ApplicationInfo;
 import android.content.pm.PackageItemInfo;
diff --git a/core/java/android/util/LocalLog.java b/core/java/android/util/LocalLog.java
index 0203430..63fe61f 100644
--- a/core/java/android/util/LocalLog.java
+++ b/core/java/android/util/LocalLog.java
@@ -16,7 +16,7 @@
 
 package android.util;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.SystemClock;
 
 import java.io.FileDescriptor;
diff --git a/core/java/android/util/Log.java b/core/java/android/util/Log.java
index 0dd7338..3077b79 100644
--- a/core/java/android/util/Log.java
+++ b/core/java/android/util/Log.java
@@ -19,7 +19,7 @@
 import android.annotation.IntDef;
 import android.annotation.NonNull;
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.DeadSystemException;
 
 import com.android.internal.os.RuntimeInit;
diff --git a/core/java/android/util/LogWriter.java b/core/java/android/util/LogWriter.java
index b062ace..a674ae1 100644
--- a/core/java/android/util/LogWriter.java
+++ b/core/java/android/util/LogWriter.java
@@ -16,7 +16,8 @@
 
 package android.util;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
+
 import java.io.Writer;
 
 /** @hide */
diff --git a/core/java/android/util/LongArray.java b/core/java/android/util/LongArray.java
index 6f4aa52..93bcd6b 100644
--- a/core/java/android/util/LongArray.java
+++ b/core/java/android/util/LongArray.java
@@ -17,7 +17,7 @@
 package android.util;
 
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 
 import com.android.internal.util.ArrayUtils;
 import com.android.internal.util.Preconditions;
diff --git a/core/java/android/util/LongSparseLongArray.java b/core/java/android/util/LongSparseLongArray.java
index 7b7eea0..75f4135 100644
--- a/core/java/android/util/LongSparseLongArray.java
+++ b/core/java/android/util/LongSparseLongArray.java
@@ -16,7 +16,7 @@
 
 package android.util;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 
 import com.android.internal.util.ArrayUtils;
 import com.android.internal.util.GrowingArrayUtils;
diff --git a/core/java/android/util/LruCache.java b/core/java/android/util/LruCache.java
index f04e7cb..d35c82b 100644
--- a/core/java/android/util/LruCache.java
+++ b/core/java/android/util/LruCache.java
@@ -16,7 +16,8 @@
 
 package android.util;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
+
 import java.util.LinkedHashMap;
 import java.util.Map;
 
diff --git a/core/java/android/util/MathUtils.java b/core/java/android/util/MathUtils.java
index 0eeef70..971e161 100644
--- a/core/java/android/util/MathUtils.java
+++ b/core/java/android/util/MathUtils.java
@@ -16,7 +16,7 @@
 
 package android.util;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.graphics.Rect;
 
 /**
diff --git a/core/java/android/util/NtpTrustedTime.java b/core/java/android/util/NtpTrustedTime.java
index 1b951a5..fa994ba 100644
--- a/core/java/android/util/NtpTrustedTime.java
+++ b/core/java/android/util/NtpTrustedTime.java
@@ -16,7 +16,7 @@
 
 package android.util;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.ContentResolver;
 import android.content.Context;
 import android.content.res.Resources;
diff --git a/core/java/android/util/PathParser.java b/core/java/android/util/PathParser.java
index 5342d5d..1e5ec0b 100644
--- a/core/java/android/util/PathParser.java
+++ b/core/java/android/util/PathParser.java
@@ -14,7 +14,7 @@
 
 package android.util;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.graphics.Path;
 
 import dalvik.annotation.optimization.FastNative;
diff --git a/core/java/android/util/Pools.java b/core/java/android/util/Pools.java
index e242fe5..7ae32441 100644
--- a/core/java/android/util/Pools.java
+++ b/core/java/android/util/Pools.java
@@ -16,7 +16,7 @@
 
 package android.util;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 
 /**
  * Helper class for crating pools of objects. An example use looks like this:
diff --git a/core/java/android/util/Rational.java b/core/java/android/util/Rational.java
index 39e8b14..5930000 100644
--- a/core/java/android/util/Rational.java
+++ b/core/java/android/util/Rational.java
@@ -15,9 +15,10 @@
  */
 package android.util;
 
-import static com.android.internal.util.Preconditions.*;
+import static com.android.internal.util.Preconditions.checkNotNull;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
+
 import java.io.IOException;
 import java.io.InvalidObjectException;
 
diff --git a/core/java/android/util/RecurrenceRule.java b/core/java/android/util/RecurrenceRule.java
index 9c60228..a570e5e 100644
--- a/core/java/android/util/RecurrenceRule.java
+++ b/core/java/android/util/RecurrenceRule.java
@@ -16,7 +16,7 @@
 
 package android.util;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Parcel;
 import android.os.Parcelable;
 
diff --git a/core/java/android/util/Singleton.java b/core/java/android/util/Singleton.java
index 15c6b5b..92646b4 100644
--- a/core/java/android/util/Singleton.java
+++ b/core/java/android/util/Singleton.java
@@ -16,7 +16,7 @@
 
 package android.util;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 
 /**
  * Singleton helper class for lazily initialization.
diff --git a/core/java/android/util/Slog.java b/core/java/android/util/Slog.java
index a85120f..2c8bbbf 100644
--- a/core/java/android/util/Slog.java
+++ b/core/java/android/util/Slog.java
@@ -16,7 +16,7 @@
 
 package android.util;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Build;
 
 /**
diff --git a/core/java/android/util/SparseArray.java b/core/java/android/util/SparseArray.java
index 0a15db2..3a0d1f5 100644
--- a/core/java/android/util/SparseArray.java
+++ b/core/java/android/util/SparseArray.java
@@ -16,7 +16,7 @@
 
 package android.util;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 
 import com.android.internal.util.ArrayUtils;
 import com.android.internal.util.GrowingArrayUtils;
diff --git a/core/java/android/util/SparseBooleanArray.java b/core/java/android/util/SparseBooleanArray.java
index d6e0e53..846df39 100644
--- a/core/java/android/util/SparseBooleanArray.java
+++ b/core/java/android/util/SparseBooleanArray.java
@@ -16,7 +16,7 @@
 
 package android.util;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 
 import com.android.internal.util.ArrayUtils;
 import com.android.internal.util.GrowingArrayUtils;
diff --git a/core/java/android/util/SparseIntArray.java b/core/java/android/util/SparseIntArray.java
index 1ca1717..d4f6685 100644
--- a/core/java/android/util/SparseIntArray.java
+++ b/core/java/android/util/SparseIntArray.java
@@ -16,7 +16,7 @@
 
 package android.util;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 
 import com.android.internal.util.ArrayUtils;
 import com.android.internal.util.GrowingArrayUtils;
diff --git a/core/java/android/util/TimeUtils.java b/core/java/android/util/TimeUtils.java
index 74cff20..8439f5a 100644
--- a/core/java/android/util/TimeUtils.java
+++ b/core/java/android/util/TimeUtils.java
@@ -19,7 +19,7 @@
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Build;
 import android.os.SystemClock;
 
diff --git a/core/java/android/util/TrustedTime.java b/core/java/android/util/TrustedTime.java
index c78665d..1360f87 100644
--- a/core/java/android/util/TrustedTime.java
+++ b/core/java/android/util/TrustedTime.java
@@ -16,7 +16,7 @@
 
 package android.util;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 
 /**
  * Interface that provides trusted time information, possibly coming from an NTP
diff --git a/core/java/android/util/XmlPullAttributes.java b/core/java/android/util/XmlPullAttributes.java
index 32fe16f..d83b355 100644
--- a/core/java/android/util/XmlPullAttributes.java
+++ b/core/java/android/util/XmlPullAttributes.java
@@ -16,13 +16,12 @@
 
 package android.util;
 
-import org.xmlpull.v1.XmlPullParser;
-
-import android.annotation.UnsupportedAppUsage;
-import android.util.AttributeSet;
+import android.compat.annotation.UnsupportedAppUsage;
 
 import com.android.internal.util.XmlUtils;
 
+import org.xmlpull.v1.XmlPullParser;
+
 /**
  * Provides an implementation of AttributeSet on top of an XmlPullParser.
  */
diff --git a/core/java/android/view/AccessibilityIterators.java b/core/java/android/view/AccessibilityIterators.java
index 5f9bf39..bee04f4 100644
--- a/core/java/android/view/AccessibilityIterators.java
+++ b/core/java/android/view/AccessibilityIterators.java
@@ -16,7 +16,7 @@
 
 package android.view;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.res.Configuration;
 
 import java.text.BreakIterator;
diff --git a/core/java/android/view/ActionMode.java b/core/java/android/view/ActionMode.java
index 6b200e1..d9f9d03 100644
--- a/core/java/android/view/ActionMode.java
+++ b/core/java/android/view/ActionMode.java
@@ -19,10 +19,9 @@
 
 import android.annotation.StringRes;
 import android.annotation.TestApi;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.graphics.Rect;
 
-import dalvik.annotation.compat.UnsupportedAppUsage;
-
 /**
  * Represents a contextual mode of the user interface. Action modes can be used to provide
  * alternative interaction modes and replace parts of the normal UI until finished.
diff --git a/core/java/android/view/ActionProvider.java b/core/java/android/view/ActionProvider.java
index cd7e67e..e1be0fe 100644
--- a/core/java/android/view/ActionProvider.java
+++ b/core/java/android/view/ActionProvider.java
@@ -16,7 +16,7 @@
 
 package android.view;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.util.Log;
 
diff --git a/core/java/android/view/AppTransitionAnimationSpec.java b/core/java/android/view/AppTransitionAnimationSpec.java
index 4c0ed52..330061f 100644
--- a/core/java/android/view/AppTransitionAnimationSpec.java
+++ b/core/java/android/view/AppTransitionAnimationSpec.java
@@ -1,6 +1,6 @@
 package android.view;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.graphics.GraphicBuffer;
 import android.graphics.Rect;
 import android.os.Parcel;
diff --git a/core/java/android/view/BatchedInputEventReceiver.java b/core/java/android/view/BatchedInputEventReceiver.java
index 61ccac9..95b2c70 100644
--- a/core/java/android/view/BatchedInputEventReceiver.java
+++ b/core/java/android/view/BatchedInputEventReceiver.java
@@ -16,7 +16,7 @@
 
 package android.view;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Looper;
 
 /**
diff --git a/core/java/android/widget/CompoundButton.java b/core/java/android/widget/CompoundButton.java
index 2674ca4..52e983e 100644
--- a/core/java/android/widget/CompoundButton.java
+++ b/core/java/android/widget/CompoundButton.java
@@ -19,7 +19,7 @@
 import android.annotation.DrawableRes;
 import android.annotation.NonNull;
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.res.ColorStateList;
 import android.content.res.TypedArray;
diff --git a/core/java/android/widget/CursorAdapter.java b/core/java/android/widget/CursorAdapter.java
index e250f63..600a34c 100644
--- a/core/java/android/widget/CursorAdapter.java
+++ b/core/java/android/widget/CursorAdapter.java
@@ -16,8 +16,8 @@
 
 package android.widget;
 
-import android.annotation.UnsupportedAppUsage;
 import android.annotation.WorkerThread;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.res.Resources;
 import android.database.ContentObserver;
diff --git a/core/java/android/widget/DatePicker.java b/core/java/android/widget/DatePicker.java
index 0c593be..c1c1a6e 100644
--- a/core/java/android/widget/DatePicker.java
+++ b/core/java/android/widget/DatePicker.java
@@ -19,8 +19,8 @@
 import android.annotation.IntDef;
 import android.annotation.Nullable;
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
 import android.annotation.Widget;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.res.Configuration;
 import android.content.res.TypedArray;
diff --git a/core/java/android/widget/DatePickerSpinnerDelegate.java b/core/java/android/widget/DatePickerSpinnerDelegate.java
index 5f15110..096e6ea 100644
--- a/core/java/android/widget/DatePickerSpinnerDelegate.java
+++ b/core/java/android/widget/DatePickerSpinnerDelegate.java
@@ -16,7 +16,7 @@
 
 package android.widget;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.res.Configuration;
 import android.content.res.TypedArray;
diff --git a/core/java/android/widget/DateTimeView.java b/core/java/android/widget/DateTimeView.java
index 2864ad0..20a53c0 100644
--- a/core/java/android/widget/DateTimeView.java
+++ b/core/java/android/widget/DateTimeView.java
@@ -21,8 +21,8 @@
 import static android.text.format.DateUtils.MINUTE_IN_MILLIS;
 import static android.text.format.DateUtils.YEAR_IN_MILLIS;
 
-import android.annotation.UnsupportedAppUsage;
 import android.app.ActivityThread;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
diff --git a/core/java/android/widget/EdgeEffect.java b/core/java/android/widget/EdgeEffect.java
index fa0af78..32f3acd 100644
--- a/core/java/android/widget/EdgeEffect.java
+++ b/core/java/android/widget/EdgeEffect.java
@@ -18,7 +18,7 @@
 
 import android.annotation.ColorInt;
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.res.TypedArray;
 import android.graphics.BlendMode;
diff --git a/core/java/android/widget/Editor.java b/core/java/android/widget/Editor.java
index cac75cfd..b6338f7 100644
--- a/core/java/android/widget/Editor.java
+++ b/core/java/android/widget/Editor.java
@@ -21,10 +21,10 @@
 import android.annotation.IntDef;
 import android.annotation.NonNull;
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
 import android.app.PendingIntent;
 import android.app.PendingIntent.CanceledException;
 import android.app.RemoteAction;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.ClipData;
 import android.content.ClipData.Item;
 import android.content.Context;
diff --git a/core/java/android/widget/ExpandableListView.java b/core/java/android/widget/ExpandableListView.java
index cae91fc..bdfb550 100644
--- a/core/java/android/widget/ExpandableListView.java
+++ b/core/java/android/widget/ExpandableListView.java
@@ -18,7 +18,7 @@
 
 import static android.os.Build.VERSION_CODES.JELLY_BEAN_MR1;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.res.TypedArray;
 import android.graphics.Canvas;
diff --git a/core/java/android/widget/FastScroller.java b/core/java/android/widget/FastScroller.java
index 2c09185..0c0b349 100644
--- a/core/java/android/widget/FastScroller.java
+++ b/core/java/android/widget/FastScroller.java
@@ -23,7 +23,7 @@
 import android.animation.ObjectAnimator;
 import android.animation.PropertyValuesHolder;
 import android.annotation.StyleRes;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.res.ColorStateList;
 import android.content.res.TypedArray;
diff --git a/core/java/android/widget/Filter.java b/core/java/android/widget/Filter.java
index 16f4ee2..06e6a5a 100644
--- a/core/java/android/widget/Filter.java
+++ b/core/java/android/widget/Filter.java
@@ -16,7 +16,7 @@
 
 package android.widget;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Handler;
 import android.os.HandlerThread;
 import android.os.Looper;
diff --git a/core/java/android/widget/FrameLayout.java b/core/java/android/widget/FrameLayout.java
index 69da911..92e9a96 100644
--- a/core/java/android/widget/FrameLayout.java
+++ b/core/java/android/widget/FrameLayout.java
@@ -20,7 +20,7 @@
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.annotation.StyleRes;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.res.TypedArray;
 import android.graphics.Rect;
diff --git a/core/java/android/widget/Gallery.java b/core/java/android/widget/Gallery.java
index 64192aa..8c0061d 100644
--- a/core/java/android/widget/Gallery.java
+++ b/core/java/android/widget/Gallery.java
@@ -17,8 +17,8 @@
 package android.widget;
 
 import android.annotation.NonNull;
-import android.annotation.UnsupportedAppUsage;
 import android.annotation.Widget;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.res.TypedArray;
 import android.graphics.Rect;
diff --git a/core/java/android/widget/GridLayout.java b/core/java/android/widget/GridLayout.java
index 8cda47d..f132197 100644
--- a/core/java/android/widget/GridLayout.java
+++ b/core/java/android/widget/GridLayout.java
@@ -31,7 +31,7 @@
 import static java.lang.Math.min;
 
 import android.annotation.IntDef;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.res.TypedArray;
 import android.graphics.Canvas;
diff --git a/core/java/android/widget/GridView.java b/core/java/android/widget/GridView.java
index 4e39a55..4a5e95e 100644
--- a/core/java/android/widget/GridView.java
+++ b/core/java/android/widget/GridView.java
@@ -18,7 +18,7 @@
 
 import android.annotation.IntDef;
 import android.annotation.NonNull;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.Intent;
 import android.content.res.TypedArray;
diff --git a/core/java/android/widget/HeaderViewListAdapter.java b/core/java/android/widget/HeaderViewListAdapter.java
index 10d50b8..eda7580 100644
--- a/core/java/android/widget/HeaderViewListAdapter.java
+++ b/core/java/android/widget/HeaderViewListAdapter.java
@@ -16,7 +16,7 @@
 
 package android.widget;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.database.DataSetObserver;
 import android.view.View;
 import android.view.ViewGroup;
diff --git a/core/java/android/widget/HorizontalScrollView.java b/core/java/android/widget/HorizontalScrollView.java
index 5921feb..f5f64c0 100644
--- a/core/java/android/widget/HorizontalScrollView.java
+++ b/core/java/android/widget/HorizontalScrollView.java
@@ -18,7 +18,7 @@
 
 import android.annotation.ColorInt;
 import android.annotation.NonNull;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.res.Configuration;
 import android.content.res.TypedArray;
diff --git a/core/java/android/widget/ImageView.java b/core/java/android/widget/ImageView.java
index d62b979..c2077384 100644
--- a/core/java/android/widget/ImageView.java
+++ b/core/java/android/widget/ImageView.java
@@ -20,7 +20,7 @@
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.ContentResolver;
 import android.content.Context;
 import android.content.res.ColorStateList;
diff --git a/core/java/android/widget/LinearLayout.java b/core/java/android/widget/LinearLayout.java
index a83e826..a796ba5 100644
--- a/core/java/android/widget/LinearLayout.java
+++ b/core/java/android/widget/LinearLayout.java
@@ -19,7 +19,7 @@
 import android.annotation.IntDef;
 import android.annotation.NonNull;
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.res.TypedArray;
 import android.graphics.Canvas;
diff --git a/core/java/android/widget/ListPopupWindow.java b/core/java/android/widget/ListPopupWindow.java
index 16b903d..001eb27 100644
--- a/core/java/android/widget/ListPopupWindow.java
+++ b/core/java/android/widget/ListPopupWindow.java
@@ -20,7 +20,7 @@
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.annotation.StyleRes;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.res.TypedArray;
 import android.database.DataSetObserver;
diff --git a/core/java/android/widget/ListView.java b/core/java/android/widget/ListView.java
index 2f44d6e..7260344 100644
--- a/core/java/android/widget/ListView.java
+++ b/core/java/android/widget/ListView.java
@@ -19,7 +19,7 @@
 import android.annotation.IdRes;
 import android.annotation.NonNull;
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.Intent;
 import android.content.res.TypedArray;
diff --git a/core/java/android/widget/MediaController.java b/core/java/android/widget/MediaController.java
index 65925b4..9c9baf3 100644
--- a/core/java/android/widget/MediaController.java
+++ b/core/java/android/widget/MediaController.java
@@ -16,7 +16,7 @@
 
 package android.widget;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.res.Resources;
 import android.graphics.PixelFormat;
diff --git a/core/java/android/widget/NumberPicker.java b/core/java/android/widget/NumberPicker.java
index b385534..b2fedf7 100644
--- a/core/java/android/widget/NumberPicker.java
+++ b/core/java/android/widget/NumberPicker.java
@@ -23,8 +23,8 @@
 import android.annotation.IntRange;
 import android.annotation.Px;
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
 import android.annotation.Widget;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.res.ColorStateList;
 import android.content.res.TypedArray;
diff --git a/core/java/android/widget/OverScroller.java b/core/java/android/widget/OverScroller.java
index e7a96be..1c33d80 100644
--- a/core/java/android/widget/OverScroller.java
+++ b/core/java/android/widget/OverScroller.java
@@ -16,7 +16,7 @@
 
 package android.widget;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.hardware.SensorManager;
 import android.util.Log;
diff --git a/core/java/android/widget/PopupMenu.java b/core/java/android/widget/PopupMenu.java
index b0c0c12..0ce9646 100644
--- a/core/java/android/widget/PopupMenu.java
+++ b/core/java/android/widget/PopupMenu.java
@@ -18,7 +18,7 @@
 
 import android.annotation.MenuRes;
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.view.Gravity;
 import android.view.Menu;
diff --git a/core/java/android/widget/PopupWindow.java b/core/java/android/widget/PopupWindow.java
index 3779779..bf696f5 100644
--- a/core/java/android/widget/PopupWindow.java
+++ b/core/java/android/widget/PopupWindow.java
@@ -18,13 +18,12 @@
 
 import static android.view.ViewGroup.LayoutParams.MATCH_PARENT;
 import static android.view.ViewGroup.LayoutParams.WRAP_CONTENT;
-import static android.view.WindowManager.LayoutParams
-        .PRIVATE_FLAG_LAYOUT_CHILD_WINDOW_IN_PARENT_FRAME;
+import static android.view.WindowManager.LayoutParams.PRIVATE_FLAG_LAYOUT_CHILD_WINDOW_IN_PARENT_FRAME;
 import static android.view.WindowManager.LayoutParams.PRIVATE_FLAG_WILL_NOT_REPLACE_ON_RELAUNCH;
 
 import android.annotation.NonNull;
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.res.TypedArray;
 import android.graphics.PixelFormat;
diff --git a/core/java/android/widget/ProgressBar.java b/core/java/android/widget/ProgressBar.java
index 2e95743..9cbb035 100644
--- a/core/java/android/widget/ProgressBar.java
+++ b/core/java/android/widget/ProgressBar.java
@@ -21,7 +21,7 @@
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.annotation.Px;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.res.ColorStateList;
 import android.content.res.TypedArray;
diff --git a/core/java/android/widget/QuickContactBadge.java b/core/java/android/widget/QuickContactBadge.java
index c1a217c..ea39f6d 100644
--- a/core/java/android/widget/QuickContactBadge.java
+++ b/core/java/android/widget/QuickContactBadge.java
@@ -16,7 +16,7 @@
 
 package android.widget;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.AsyncQueryHandler;
 import android.content.ContentResolver;
 import android.content.Context;
diff --git a/core/java/android/widget/RadioGroup.java b/core/java/android/widget/RadioGroup.java
index c62c16c..69c3cda 100644
--- a/core/java/android/widget/RadioGroup.java
+++ b/core/java/android/widget/RadioGroup.java
@@ -18,7 +18,7 @@
 
 import android.annotation.IdRes;
 import android.annotation.NonNull;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.res.TypedArray;
 import android.util.AttributeSet;
diff --git a/core/java/android/widget/RatingBar.java b/core/java/android/widget/RatingBar.java
index 3cf3d91..f946fe6 100644
--- a/core/java/android/widget/RatingBar.java
+++ b/core/java/android/widget/RatingBar.java
@@ -16,7 +16,7 @@
 
 package android.widget;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.res.TypedArray;
 import android.graphics.drawable.shapes.RectShape;
diff --git a/core/java/android/widget/RelativeLayout.java b/core/java/android/widget/RelativeLayout.java
index b9da307..521922d 100644
--- a/core/java/android/widget/RelativeLayout.java
+++ b/core/java/android/widget/RelativeLayout.java
@@ -19,7 +19,7 @@
 import static android.os.Build.VERSION_CODES.JELLY_BEAN_MR1;
 
 import android.annotation.NonNull;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.res.ResourceId;
 import android.content.res.TypedArray;
diff --git a/core/java/android/widget/RemoteViews.java b/core/java/android/widget/RemoteViews.java
index 86cec5e..82e03e2 100644
--- a/core/java/android/widget/RemoteViews.java
+++ b/core/java/android/widget/RemoteViews.java
@@ -22,7 +22,6 @@
 import android.annotation.LayoutRes;
 import android.annotation.NonNull;
 import android.annotation.StyleRes;
-import android.annotation.UnsupportedAppUsage;
 import android.app.Activity;
 import android.app.ActivityOptions;
 import android.app.ActivityThread;
@@ -30,6 +29,7 @@
 import android.app.PendingIntent;
 import android.app.RemoteInput;
 import android.appwidget.AppWidgetHostView;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.ContextWrapper;
 import android.content.Intent;
diff --git a/core/java/android/widget/RemoteViewsAdapter.java b/core/java/android/widget/RemoteViewsAdapter.java
index efc5eb3..e58f08a 100644
--- a/core/java/android/widget/RemoteViewsAdapter.java
+++ b/core/java/android/widget/RemoteViewsAdapter.java
@@ -19,11 +19,11 @@
 import static android.widget.RemoteViews.EXTRA_REMOTEADAPTER_APPWIDGET_ID;
 import static android.widget.RemoteViews.EXTRA_REMOTEADAPTER_ON_LIGHT_BACKGROUND;
 
-import android.annotation.UnsupportedAppUsage;
 import android.annotation.WorkerThread;
 import android.app.IServiceConnection;
 import android.appwidget.AppWidgetHostView;
 import android.appwidget.AppWidgetManager;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
diff --git a/core/java/android/widget/ScrollBarDrawable.java b/core/java/android/widget/ScrollBarDrawable.java
index a5d3e45..80e17b5 100644
--- a/core/java/android/widget/ScrollBarDrawable.java
+++ b/core/java/android/widget/ScrollBarDrawable.java
@@ -18,7 +18,7 @@
 
 import android.annotation.NonNull;
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.graphics.Canvas;
 import android.graphics.ColorFilter;
 import android.graphics.PixelFormat;
diff --git a/core/java/android/widget/ScrollView.java b/core/java/android/widget/ScrollView.java
index 51b0950..6c2e7a9 100644
--- a/core/java/android/widget/ScrollView.java
+++ b/core/java/android/widget/ScrollView.java
@@ -18,7 +18,7 @@
 
 import android.annotation.ColorInt;
 import android.annotation.NonNull;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.res.Configuration;
 import android.content.res.TypedArray;
diff --git a/core/java/android/widget/Scroller.java b/core/java/android/widget/Scroller.java
index 229eaf0..6ed5b7e 100644
--- a/core/java/android/widget/Scroller.java
+++ b/core/java/android/widget/Scroller.java
@@ -16,7 +16,7 @@
 
 package android.widget;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.hardware.SensorManager;
 import android.os.Build;
diff --git a/core/java/android/widget/SearchView.java b/core/java/android/widget/SearchView.java
index 89d9e97..15959c2 100644
--- a/core/java/android/widget/SearchView.java
+++ b/core/java/android/widget/SearchView.java
@@ -19,10 +19,10 @@
 import static android.widget.SuggestionsAdapter.getColumnString;
 
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
 import android.app.PendingIntent;
 import android.app.SearchManager;
 import android.app.SearchableInfo;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.ActivityNotFoundException;
 import android.content.ComponentName;
 import android.content.Context;
diff --git a/core/java/android/widget/SeekBar.java b/core/java/android/widget/SeekBar.java
index e8cf1e8..5676881 100644
--- a/core/java/android/widget/SeekBar.java
+++ b/core/java/android/widget/SeekBar.java
@@ -16,7 +16,7 @@
 
 package android.widget;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.util.AttributeSet;
 import android.view.accessibility.AccessibilityNodeInfo;
diff --git a/core/java/android/widget/SimpleAdapter.java b/core/java/android/widget/SimpleAdapter.java
index 15e1ffa..404b817 100644
--- a/core/java/android/widget/SimpleAdapter.java
+++ b/core/java/android/widget/SimpleAdapter.java
@@ -18,7 +18,7 @@
 
 import android.annotation.IdRes;
 import android.annotation.LayoutRes;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.res.Resources;
 import android.net.Uri;
diff --git a/core/java/android/widget/SimpleCursorAdapter.java b/core/java/android/widget/SimpleCursorAdapter.java
index 77fe5d1..6277d5b 100644
--- a/core/java/android/widget/SimpleCursorAdapter.java
+++ b/core/java/android/widget/SimpleCursorAdapter.java
@@ -16,7 +16,7 @@
 
 package android.widget;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.database.Cursor;
 import android.net.Uri;
diff --git a/core/java/android/widget/SlidingDrawer.java b/core/java/android/widget/SlidingDrawer.java
index 2ab2b24..9a4cfa1 100644
--- a/core/java/android/widget/SlidingDrawer.java
+++ b/core/java/android/widget/SlidingDrawer.java
@@ -17,7 +17,7 @@
 package android.widget;
 
 import android.R;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.res.TypedArray;
 import android.graphics.Bitmap;
diff --git a/core/java/android/widget/Spinner.java b/core/java/android/widget/Spinner.java
index 92fcea3..46fc09f 100644
--- a/core/java/android/widget/Spinner.java
+++ b/core/java/android/widget/Spinner.java
@@ -19,9 +19,9 @@
 import android.annotation.DrawableRes;
 import android.annotation.Nullable;
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
 import android.annotation.Widget;
 import android.app.AlertDialog;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.DialogInterface;
 import android.content.DialogInterface.OnClickListener;
diff --git a/core/java/android/widget/Switch.java b/core/java/android/widget/Switch.java
index d57b3bc..f1f3939 100644
--- a/core/java/android/widget/Switch.java
+++ b/core/java/android/widget/Switch.java
@@ -21,7 +21,7 @@
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.annotation.StyleRes;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.res.ColorStateList;
 import android.content.res.Resources;
diff --git a/core/java/android/widget/TabHost.java b/core/java/android/widget/TabHost.java
index 481704c..fd8dbf5 100644
--- a/core/java/android/widget/TabHost.java
+++ b/core/java/android/widget/TabHost.java
@@ -18,8 +18,8 @@
 
 import android.annotation.NonNull;
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
 import android.app.LocalActivityManager;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.Intent;
 import android.content.res.TypedArray;
diff --git a/core/java/android/widget/TabWidget.java b/core/java/android/widget/TabWidget.java
index 4c67b08..945cef3 100644
--- a/core/java/android/widget/TabWidget.java
+++ b/core/java/android/widget/TabWidget.java
@@ -18,7 +18,7 @@
 
 import android.annotation.DrawableRes;
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.res.TypedArray;
 import android.graphics.Canvas;
diff --git a/core/java/android/widget/TextClock.java b/core/java/android/widget/TextClock.java
index b7dd88b..88a6762 100644
--- a/core/java/android/widget/TextClock.java
+++ b/core/java/android/widget/TextClock.java
@@ -21,8 +21,8 @@
 
 import android.annotation.NonNull;
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
 import android.app.ActivityManager;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.BroadcastReceiver;
 import android.content.ContentResolver;
 import android.content.Context;
diff --git a/core/java/android/widget/TextView.java b/core/java/android/widget/TextView.java
index 0918c5f..6f697cd 100644
--- a/core/java/android/widget/TextView.java
+++ b/core/java/android/widget/TextView.java
@@ -36,11 +36,11 @@
 import android.annotation.Size;
 import android.annotation.StringRes;
 import android.annotation.StyleRes;
-import android.annotation.UnsupportedAppUsage;
 import android.annotation.XmlRes;
 import android.app.Activity;
 import android.app.PendingIntent;
 import android.app.assist.AssistStructure;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.ClipData;
 import android.content.ClipDescription;
 import android.content.ClipboardManager;
diff --git a/core/java/android/widget/TimePicker.java b/core/java/android/widget/TimePicker.java
index 8a5d531..51b1847 100644
--- a/core/java/android/widget/TimePicker.java
+++ b/core/java/android/widget/TimePicker.java
@@ -20,8 +20,8 @@
 import android.annotation.IntRange;
 import android.annotation.NonNull;
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
 import android.annotation.Widget;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.res.TypedArray;
 import android.icu.util.Calendar;
diff --git a/core/java/android/widget/Toast.java b/core/java/android/widget/Toast.java
index d037337..e6dcd9e 100644
--- a/core/java/android/widget/Toast.java
+++ b/core/java/android/widget/Toast.java
@@ -20,9 +20,9 @@
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.annotation.StringRes;
-import android.annotation.UnsupportedAppUsage;
 import android.app.INotificationManager;
 import android.app.ITransientNotification;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.res.Configuration;
 import android.content.res.Resources;
diff --git a/core/java/android/widget/Toolbar.java b/core/java/android/widget/Toolbar.java
index a21fb41..ea3f06b 100644
--- a/core/java/android/widget/Toolbar.java
+++ b/core/java/android/widget/Toolbar.java
@@ -24,8 +24,8 @@
 import android.annotation.StringRes;
 import android.annotation.StyleRes;
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
 import android.app.ActionBar;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.res.TypedArray;
 import android.graphics.drawable.Drawable;
diff --git a/core/java/android/widget/VideoView.java b/core/java/android/widget/VideoView.java
index 40b0f13..36dafd5 100644
--- a/core/java/android/widget/VideoView.java
+++ b/core/java/android/widget/VideoView.java
@@ -17,8 +17,8 @@
 package android.widget;
 
 import android.annotation.NonNull;
-import android.annotation.UnsupportedAppUsage;
 import android.app.AlertDialog;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.DialogInterface;
 import android.content.res.Resources;
diff --git a/core/java/android/widget/ViewAnimator.java b/core/java/android/widget/ViewAnimator.java
index 80ea363..909404b 100644
--- a/core/java/android/widget/ViewAnimator.java
+++ b/core/java/android/widget/ViewAnimator.java
@@ -18,7 +18,7 @@
 
 
 import android.annotation.AnimRes;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.res.TypedArray;
 import android.util.AttributeSet;
diff --git a/core/java/android/widget/ViewFlipper.java b/core/java/android/widget/ViewFlipper.java
index b962298..2df9a78 100644
--- a/core/java/android/widget/ViewFlipper.java
+++ b/core/java/android/widget/ViewFlipper.java
@@ -17,7 +17,7 @@
 package android.widget;
 
 import android.annotation.IntRange;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
diff --git a/core/java/android/widget/ZoomControls.java b/core/java/android/widget/ZoomControls.java
index 7a5b7e8..f435533 100644
--- a/core/java/android/widget/ZoomControls.java
+++ b/core/java/android/widget/ZoomControls.java
@@ -16,8 +16,8 @@
 
 package android.widget;
 
-import android.annotation.UnsupportedAppUsage;
 import android.annotation.Widget;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.util.AttributeSet;
 import android.view.LayoutInflater;
diff --git a/core/java/com/android/internal/app/AlertActivity.java b/core/java/com/android/internal/app/AlertActivity.java
index 7307de5..cfbb273 100644
--- a/core/java/com/android/internal/app/AlertActivity.java
+++ b/core/java/com/android/internal/app/AlertActivity.java
@@ -16,9 +16,9 @@
 
 package com.android.internal.app;
 
-import android.annotation.UnsupportedAppUsage;
 import android.app.Activity;
 import android.app.Dialog;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.DialogInterface;
 import android.os.Bundle;
 import android.view.KeyEvent;
diff --git a/core/java/com/android/internal/app/AlertController.java b/core/java/com/android/internal/app/AlertController.java
index 3462e08..a08bf99 100644
--- a/core/java/com/android/internal/app/AlertController.java
+++ b/core/java/com/android/internal/app/AlertController.java
@@ -18,14 +18,11 @@
 
 import static android.view.ViewGroup.LayoutParams.MATCH_PARENT;
 
-import com.android.internal.R;
-
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
 import android.app.AlertDialog;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.DialogInterface;
-import android.content.res.Configuration;
 import android.content.res.TypedArray;
 import android.database.Cursor;
 import android.graphics.drawable.Drawable;
@@ -33,7 +30,6 @@
 import android.os.Message;
 import android.text.Layout;
 import android.text.TextUtils;
-import android.text.method.LinkMovementMethod;
 import android.text.method.MovementMethod;
 import android.util.AttributeSet;
 import android.util.TypedValue;
@@ -46,7 +42,6 @@
 import android.view.ViewParent;
 import android.view.ViewStub;
 import android.view.Window;
-import android.view.WindowInsets;
 import android.view.WindowManager;
 import android.widget.AdapterView;
 import android.widget.AdapterView.OnItemClickListener;
@@ -63,6 +58,8 @@
 import android.widget.SimpleCursorAdapter;
 import android.widget.TextView;
 
+import com.android.internal.R;
+
 import java.lang.ref.WeakReference;
 
 public class AlertController {
diff --git a/core/java/com/android/internal/app/AssistUtils.java b/core/java/com/android/internal/app/AssistUtils.java
index f848309..22a2564 100644
--- a/core/java/com/android/internal/app/AssistUtils.java
+++ b/core/java/com/android/internal/app/AssistUtils.java
@@ -17,7 +17,7 @@
 package com.android.internal.app;
 
 import android.annotation.NonNull;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.pm.ApplicationInfo;
diff --git a/core/java/com/android/internal/app/ChooserActivity.java b/core/java/com/android/internal/app/ChooserActivity.java
index 102ba5c..c0c9dd3 100644
--- a/core/java/com/android/internal/app/ChooserActivity.java
+++ b/core/java/com/android/internal/app/ChooserActivity.java
@@ -26,7 +26,6 @@
 import android.annotation.IntDef;
 import android.annotation.NonNull;
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
 import android.app.Activity;
 import android.app.ActivityManager;
 import android.app.prediction.AppPredictionContext;
@@ -34,6 +33,7 @@
 import android.app.prediction.AppPredictor;
 import android.app.prediction.AppTarget;
 import android.app.prediction.AppTargetEvent;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.ClipData;
 import android.content.ClipboardManager;
 import android.content.ComponentName;
diff --git a/core/java/com/android/internal/app/IntentForwarderActivity.java b/core/java/com/android/internal/app/IntentForwarderActivity.java
index a5f055f..9488e4f 100644
--- a/core/java/com/android/internal/app/IntentForwarderActivity.java
+++ b/core/java/com/android/internal/app/IntentForwarderActivity.java
@@ -20,12 +20,12 @@
 
 import android.annotation.Nullable;
 import android.annotation.StringRes;
-import android.annotation.UnsupportedAppUsage;
 import android.app.Activity;
 import android.app.ActivityTaskManager;
 import android.app.ActivityThread;
 import android.app.AppGlobals;
 import android.app.admin.DevicePolicyManager;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Intent;
 import android.content.pm.ActivityInfo;
 import android.content.pm.IPackageManager;
diff --git a/core/java/com/android/internal/app/LocaleHelper.java b/core/java/com/android/internal/app/LocaleHelper.java
index e3d07aa..d418770e 100644
--- a/core/java/com/android/internal/app/LocaleHelper.java
+++ b/core/java/com/android/internal/app/LocaleHelper.java
@@ -17,7 +17,7 @@
 package com.android.internal.app;
 
 import android.annotation.IntRange;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.icu.text.ListFormatter;
 import android.icu.util.ULocale;
 import android.os.LocaleList;
diff --git a/core/java/com/android/internal/app/LocalePicker.java b/core/java/com/android/internal/app/LocalePicker.java
index 7517424..3343593f 100644
--- a/core/java/com/android/internal/app/LocalePicker.java
+++ b/core/java/com/android/internal/app/LocalePicker.java
@@ -16,13 +16,11 @@
 
 package com.android.internal.app;
 
-import com.android.internal.R;
-
-import android.annotation.UnsupportedAppUsage;
 import android.app.ActivityManager;
 import android.app.IActivityManager;
 import android.app.ListFragment;
 import android.app.backup.BackupManager;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.res.Configuration;
 import android.content.res.Resources;
@@ -38,11 +36,13 @@
 import android.widget.ListView;
 import android.widget.TextView;
 
+import com.android.internal.R;
+
 import java.text.Collator;
+import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
 import java.util.Locale;
-import java.util.ArrayList;
 
 public class LocalePicker extends ListFragment {
     private static final String TAG = "LocalePicker";
diff --git a/core/java/com/android/internal/app/LocaleStore.java b/core/java/com/android/internal/app/LocaleStore.java
index 49f77e1..1c5ca59 100644
--- a/core/java/com/android/internal/app/LocaleStore.java
+++ b/core/java/com/android/internal/app/LocaleStore.java
@@ -16,7 +16,7 @@
 
 package com.android.internal.app;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.os.LocaleList;
 import android.provider.Settings;
diff --git a/core/java/com/android/internal/app/NetInitiatedActivity.java b/core/java/com/android/internal/app/NetInitiatedActivity.java
index 9a802a9..89aa770 100644
--- a/core/java/com/android/internal/app/NetInitiatedActivity.java
+++ b/core/java/com/android/internal/app/NetInitiatedActivity.java
@@ -16,19 +16,19 @@
 
 package com.android.internal.app;
 
-import android.annotation.UnsupportedAppUsage;
 import android.app.AlertDialog;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.DialogInterface;
 import android.content.Intent;
 import android.content.IntentFilter;
+import android.location.LocationManager;
 import android.os.Bundle;
 import android.os.Handler;
 import android.os.Message;
-import android.widget.Toast;
 import android.util.Log;
-import android.location.LocationManager;
+import android.widget.Toast;
 
 import com.android.internal.R;
 import com.android.internal.location.GpsNetInitiatedHandler;
diff --git a/core/java/com/android/internal/app/ResolverActivity.java b/core/java/com/android/internal/app/ResolverActivity.java
index 7d19eb6..871e4f8 100644
--- a/core/java/com/android/internal/app/ResolverActivity.java
+++ b/core/java/com/android/internal/app/ResolverActivity.java
@@ -21,7 +21,6 @@
 import android.annotation.Nullable;
 import android.annotation.StringRes;
 import android.annotation.UiThread;
-import android.annotation.UnsupportedAppUsage;
 import android.app.Activity;
 import android.app.ActivityManager;
 import android.app.ActivityTaskManager;
@@ -29,6 +28,7 @@
 import android.app.VoiceInteractor.PickOptionRequest;
 import android.app.VoiceInteractor.PickOptionRequest.Option;
 import android.app.VoiceInteractor.Prompt;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
diff --git a/core/java/com/android/internal/app/WindowDecorActionBar.java b/core/java/com/android/internal/app/WindowDecorActionBar.java
index e71ee66..0cd1202 100644
--- a/core/java/com/android/internal/app/WindowDecorActionBar.java
+++ b/core/java/com/android/internal/app/WindowDecorActionBar.java
@@ -16,28 +16,17 @@
 
 package com.android.internal.app;
 
-import com.android.internal.R;
-import com.android.internal.view.ActionBarPolicy;
-import com.android.internal.view.menu.MenuBuilder;
-import com.android.internal.view.menu.MenuPopupHelper;
-import com.android.internal.view.menu.SubMenuBuilder;
-import com.android.internal.widget.ActionBarContainer;
-import com.android.internal.widget.ActionBarContextView;
-import com.android.internal.widget.ActionBarOverlayLayout;
-import com.android.internal.widget.DecorToolbar;
-import com.android.internal.widget.ScrollingTabContainerView;
-
 import android.animation.Animator;
 import android.animation.Animator.AnimatorListener;
 import android.animation.AnimatorListenerAdapter;
 import android.animation.AnimatorSet;
 import android.animation.ObjectAnimator;
 import android.animation.ValueAnimator;
-import android.annotation.UnsupportedAppUsage;
 import android.app.ActionBar;
 import android.app.Activity;
 import android.app.Dialog;
 import android.app.FragmentTransaction;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.res.Configuration;
 import android.content.res.Resources;
@@ -58,6 +47,17 @@
 import android.widget.SpinnerAdapter;
 import android.widget.Toolbar;
 
+import com.android.internal.R;
+import com.android.internal.view.ActionBarPolicy;
+import com.android.internal.view.menu.MenuBuilder;
+import com.android.internal.view.menu.MenuPopupHelper;
+import com.android.internal.view.menu.SubMenuBuilder;
+import com.android.internal.widget.ActionBarContainer;
+import com.android.internal.widget.ActionBarContextView;
+import com.android.internal.widget.ActionBarOverlayLayout;
+import com.android.internal.widget.DecorToolbar;
+import com.android.internal.widget.ScrollingTabContainerView;
+
 import java.lang.ref.WeakReference;
 import java.util.ArrayList;
 
diff --git a/core/java/com/android/internal/content/PackageMonitor.java b/core/java/com/android/internal/content/PackageMonitor.java
index 5d7d3af..9baa6fb 100644
--- a/core/java/com/android/internal/content/PackageMonitor.java
+++ b/core/java/com/android/internal/content/PackageMonitor.java
@@ -16,8 +16,8 @@
 
 package com.android.internal.content;
 
-import android.annotation.UnsupportedAppUsage;
 import android.app.Activity;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
diff --git a/core/java/com/android/internal/content/ReferrerIntent.java b/core/java/com/android/internal/content/ReferrerIntent.java
index 6d05f7e..6af03dd 100644
--- a/core/java/com/android/internal/content/ReferrerIntent.java
+++ b/core/java/com/android/internal/content/ReferrerIntent.java
@@ -16,7 +16,7 @@
 
 package com.android.internal.content;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Intent;
 import android.os.Parcel;
 
diff --git a/core/java/com/android/internal/database/SortCursor.java b/core/java/com/android/internal/database/SortCursor.java
index 7fe809e..230a9b87 100644
--- a/core/java/com/android/internal/database/SortCursor.java
+++ b/core/java/com/android/internal/database/SortCursor.java
@@ -16,7 +16,7 @@
 
 package com.android.internal.database;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.database.AbstractCursor;
 import android.database.Cursor;
 import android.database.DataSetObserver;
diff --git a/core/java/com/android/internal/logging/MetricsLogger.java b/core/java/com/android/internal/logging/MetricsLogger.java
index f916cf6..ed04fd8 100644
--- a/core/java/com/android/internal/logging/MetricsLogger.java
+++ b/core/java/com/android/internal/logging/MetricsLogger.java
@@ -15,7 +15,7 @@
  */
 package com.android.internal.logging;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.metrics.LogMaker;
 import android.os.Build;
diff --git a/core/java/com/android/internal/net/LegacyVpnInfo.java b/core/java/com/android/internal/net/LegacyVpnInfo.java
index 2ad9759..4eb7ded 100644
--- a/core/java/com/android/internal/net/LegacyVpnInfo.java
+++ b/core/java/com/android/internal/net/LegacyVpnInfo.java
@@ -16,8 +16,8 @@
 
 package com.android.internal.net;
 
-import android.annotation.UnsupportedAppUsage;
 import android.app.PendingIntent;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.net.NetworkInfo;
 import android.os.Parcel;
 import android.os.Parcelable;
diff --git a/core/java/com/android/internal/net/VpnConfig.java b/core/java/com/android/internal/net/VpnConfig.java
index e6be549..f5a19fe 100644
--- a/core/java/com/android/internal/net/VpnConfig.java
+++ b/core/java/com/android/internal/net/VpnConfig.java
@@ -16,8 +16,8 @@
 
 package com.android.internal.net;
 
-import android.annotation.UnsupportedAppUsage;
 import android.app.PendingIntent;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
diff --git a/core/java/com/android/internal/net/VpnProfile.java b/core/java/com/android/internal/net/VpnProfile.java
index 940cc36..4bb012a 100644
--- a/core/java/com/android/internal/net/VpnProfile.java
+++ b/core/java/com/android/internal/net/VpnProfile.java
@@ -16,10 +16,9 @@
 
 package com.android.internal.net;
 
-import android.annotation.UnsupportedAppUsage;
-import android.os.Build;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.net.ProxyInfo;
-import android.net.Uri;
+import android.os.Build;
 import android.os.Parcel;
 import android.os.Parcelable;
 import android.text.TextUtils;
diff --git a/core/java/com/android/internal/os/AndroidPrintStream.java b/core/java/com/android/internal/os/AndroidPrintStream.java
index fe23411..a6e41ff 100644
--- a/core/java/com/android/internal/os/AndroidPrintStream.java
+++ b/core/java/com/android/internal/os/AndroidPrintStream.java
@@ -16,7 +16,7 @@
 
 package com.android.internal.os;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.util.Log;
 
 /**
diff --git a/core/java/com/android/internal/os/AtomicFile.java b/core/java/com/android/internal/os/AtomicFile.java
index a72a2f5..80b3314 100644
--- a/core/java/com/android/internal/os/AtomicFile.java
+++ b/core/java/com/android/internal/os/AtomicFile.java
@@ -16,7 +16,7 @@
 
 package com.android.internal.os;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Build;
 import android.os.FileUtils;
 import android.util.Log;
diff --git a/core/java/com/android/internal/os/BaseCommand.java b/core/java/com/android/internal/os/BaseCommand.java
index 5ba6629..db87f51 100644
--- a/core/java/com/android/internal/os/BaseCommand.java
+++ b/core/java/com/android/internal/os/BaseCommand.java
@@ -17,7 +17,7 @@
 
 package com.android.internal.os;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.ShellCommand;
 
 import java.io.PrintStream;
diff --git a/core/java/com/android/internal/os/BatterySipper.java b/core/java/com/android/internal/os/BatterySipper.java
index b1fc369..b3ea118 100644
--- a/core/java/com/android/internal/os/BatterySipper.java
+++ b/core/java/com/android/internal/os/BatterySipper.java
@@ -15,7 +15,7 @@
  */
 package com.android.internal.os;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.BatteryStats.Uid;
 
 import java.util.List;
diff --git a/core/java/com/android/internal/os/BatteryStatsHelper.java b/core/java/com/android/internal/os/BatteryStatsHelper.java
index e85508e..b131ab8 100644
--- a/core/java/com/android/internal/os/BatteryStatsHelper.java
+++ b/core/java/com/android/internal/os/BatteryStatsHelper.java
@@ -16,7 +16,7 @@
 
 package com.android.internal.os;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
diff --git a/core/java/com/android/internal/os/BatteryStatsImpl.java b/core/java/com/android/internal/os/BatteryStatsImpl.java
index 3bd0fd2..183c0fb 100644
--- a/core/java/com/android/internal/os/BatteryStatsImpl.java
+++ b/core/java/com/android/internal/os/BatteryStatsImpl.java
@@ -18,10 +18,10 @@
 
 import android.annotation.NonNull;
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
 import android.app.ActivityManager;
 import android.bluetooth.BluetoothActivityEnergyInfo;
 import android.bluetooth.UidTraffic;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.BroadcastReceiver;
 import android.content.ContentResolver;
 import android.content.Context;
diff --git a/core/java/com/android/internal/os/BinderInternal.java b/core/java/com/android/internal/os/BinderInternal.java
index 4901e1f..95c36ca 100644
--- a/core/java/com/android/internal/os/BinderInternal.java
+++ b/core/java/com/android/internal/os/BinderInternal.java
@@ -17,7 +17,7 @@
 package com.android.internal.os;
 
 import android.annotation.NonNull;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Binder;
 import android.os.Handler;
 import android.os.IBinder;
diff --git a/core/java/com/android/internal/os/ClassLoaderFactory.java b/core/java/com/android/internal/os/ClassLoaderFactory.java
index d323498..a18943c 100644
--- a/core/java/com/android/internal/os/ClassLoaderFactory.java
+++ b/core/java/com/android/internal/os/ClassLoaderFactory.java
@@ -16,7 +16,7 @@
 
 package com.android.internal.os;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Trace;
 
 import dalvik.system.DelegateLastClassLoader;
diff --git a/core/java/com/android/internal/os/FuseAppLoop.java b/core/java/com/android/internal/os/FuseAppLoop.java
index d08930b..f8f9fa9 100644
--- a/core/java/com/android/internal/os/FuseAppLoop.java
+++ b/core/java/com/android/internal/os/FuseAppLoop.java
@@ -18,17 +18,19 @@
 
 import android.annotation.NonNull;
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
-import android.os.ProxyFileDescriptorCallback;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Handler;
 import android.os.Message;
 import android.os.ParcelFileDescriptor;
+import android.os.ProxyFileDescriptorCallback;
 import android.system.ErrnoException;
 import android.system.OsConstants;
 import android.util.Log;
 import android.util.SparseArray;
+
 import com.android.internal.annotations.GuardedBy;
 import com.android.internal.util.Preconditions;
+
 import java.util.HashMap;
 import java.util.LinkedList;
 import java.util.Map;
diff --git a/core/java/com/android/internal/os/HandlerCaller.java b/core/java/com/android/internal/os/HandlerCaller.java
index c8bfa1b..a11c815 100644
--- a/core/java/com/android/internal/os/HandlerCaller.java
+++ b/core/java/com/android/internal/os/HandlerCaller.java
@@ -16,7 +16,7 @@
 
 package com.android.internal.os;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.os.Handler;
 import android.os.Looper;
diff --git a/core/java/com/android/internal/os/PowerProfile.java b/core/java/com/android/internal/os/PowerProfile.java
index 8338d78..d3fe582 100644
--- a/core/java/com/android/internal/os/PowerProfile.java
+++ b/core/java/com/android/internal/os/PowerProfile.java
@@ -17,7 +17,7 @@
 package com.android.internal.os;
 
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.res.Resources;
 import android.content.res.XmlResourceParser;
diff --git a/core/java/com/android/internal/os/ProcessCpuTracker.java b/core/java/com/android/internal/os/ProcessCpuTracker.java
index dcf8d28..f7b7742 100644
--- a/core/java/com/android/internal/os/ProcessCpuTracker.java
+++ b/core/java/com/android/internal/os/ProcessCpuTracker.java
@@ -16,9 +16,14 @@
 
 package com.android.internal.os;
 
-import static android.os.Process.*;
+import static android.os.Process.PROC_COMBINE;
+import static android.os.Process.PROC_OUT_FLOAT;
+import static android.os.Process.PROC_OUT_LONG;
+import static android.os.Process.PROC_OUT_STRING;
+import static android.os.Process.PROC_PARENS;
+import static android.os.Process.PROC_SPACE_TERM;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Process;
 import android.os.StrictMode;
 import android.os.SystemClock;
diff --git a/core/java/com/android/internal/os/RuntimeInit.java b/core/java/com/android/internal/os/RuntimeInit.java
index fa823c4..179828c 100644
--- a/core/java/com/android/internal/os/RuntimeInit.java
+++ b/core/java/com/android/internal/os/RuntimeInit.java
@@ -16,10 +16,10 @@
 
 package com.android.internal.os;
 
-import android.annotation.UnsupportedAppUsage;
 import android.app.ActivityManager;
 import android.app.ActivityThread;
 import android.app.ApplicationErrorReport;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.type.DefaultMimeMapFactory;
 import android.os.Build;
 import android.os.DeadObjectException;
diff --git a/core/java/com/android/internal/os/SomeArgs.java b/core/java/com/android/internal/os/SomeArgs.java
index d78bfac..003f610 100644
--- a/core/java/com/android/internal/os/SomeArgs.java
+++ b/core/java/com/android/internal/os/SomeArgs.java
@@ -16,7 +16,7 @@
 
 package com.android.internal.os;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 
 /**
  * Helper class for passing more arguments though a message
diff --git a/core/java/com/android/internal/os/ZygoteConnection.java b/core/java/com/android/internal/os/ZygoteConnection.java
index 4c37591..e8d6681 100644
--- a/core/java/com/android/internal/os/ZygoteConnection.java
+++ b/core/java/com/android/internal/os/ZygoteConnection.java
@@ -23,7 +23,7 @@
 import static com.android.internal.os.ZygoteConnectionConstants.CONNECTION_TIMEOUT_MILLIS;
 import static com.android.internal.os.ZygoteConnectionConstants.WRAPPED_PID_TIMEOUT_MILLIS;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.pm.ApplicationInfo;
 import android.net.Credentials;
 import android.net.LocalSocket;
diff --git a/core/java/com/android/internal/os/ZygoteInit.java b/core/java/com/android/internal/os/ZygoteInit.java
index 7b77a92..fd02237 100644
--- a/core/java/com/android/internal/os/ZygoteInit.java
+++ b/core/java/com/android/internal/os/ZygoteInit.java
@@ -19,8 +19,8 @@
 import static android.system.OsConstants.S_IRWXG;
 import static android.system.OsConstants.S_IRWXO;
 
-import android.annotation.UnsupportedAppUsage;
 import android.app.ApplicationLoaders;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.pm.SharedLibraryInfo;
 import android.content.res.Resources;
 import android.content.res.TypedArray;
diff --git a/core/java/com/android/internal/os/ZygoteSecurityException.java b/core/java/com/android/internal/os/ZygoteSecurityException.java
index 7e50cb8..8111483 100644
--- a/core/java/com/android/internal/os/ZygoteSecurityException.java
+++ b/core/java/com/android/internal/os/ZygoteSecurityException.java
@@ -16,7 +16,7 @@
 
 package com.android.internal.os;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 
 /**
  * Exception thrown when a security policy is violated.
diff --git a/core/java/com/android/internal/policy/DecorView.java b/core/java/com/android/internal/policy/DecorView.java
index 07002d7..81db441 100644
--- a/core/java/com/android/internal/policy/DecorView.java
+++ b/core/java/com/android/internal/policy/DecorView.java
@@ -46,8 +46,8 @@
 import android.animation.ObjectAnimator;
 import android.annotation.Nullable;
 import android.annotation.TestApi;
-import android.annotation.UnsupportedAppUsage;
 import android.app.WindowConfiguration;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.res.Configuration;
 import android.content.res.Resources;
diff --git a/core/java/com/android/internal/policy/PhoneFallbackEventHandler.java b/core/java/com/android/internal/policy/PhoneFallbackEventHandler.java
index 791c2d7..f07f667 100644
--- a/core/java/com/android/internal/policy/PhoneFallbackEventHandler.java
+++ b/core/java/com/android/internal/policy/PhoneFallbackEventHandler.java
@@ -16,9 +16,9 @@
 
 package com.android.internal.policy;
 
-import android.annotation.UnsupportedAppUsage;
 import android.app.KeyguardManager;
 import android.app.SearchManager;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.ActivityNotFoundException;
 import android.content.Context;
 import android.content.Intent;
@@ -33,7 +33,6 @@
 import android.view.HapticFeedbackConstants;
 import android.view.KeyEvent;
 import android.view.View;
-import com.android.internal.policy.PhoneWindow;
 
 /**
  * @hide
diff --git a/core/java/com/android/internal/policy/PhoneWindow.java b/core/java/com/android/internal/policy/PhoneWindow.java
index daa57e0..a785ede 100644
--- a/core/java/com/android/internal/policy/PhoneWindow.java
+++ b/core/java/com/android/internal/policy/PhoneWindow.java
@@ -34,10 +34,10 @@
 import static android.view.WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_DRAW_BAR_BACKGROUNDS;
 
 import android.annotation.NonNull;
-import android.annotation.UnsupportedAppUsage;
 import android.app.ActivityManager;
 import android.app.KeyguardManager;
 import android.app.SearchManager;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.Intent;
 import android.content.pm.PackageManager;
diff --git a/core/java/com/android/internal/preference/YesNoPreference.java b/core/java/com/android/internal/preference/YesNoPreference.java
index 94ef619..f878054 100644
--- a/core/java/com/android/internal/preference/YesNoPreference.java
+++ b/core/java/com/android/internal/preference/YesNoPreference.java
@@ -16,6 +16,7 @@
 
 package com.android.internal.preference;
 
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.res.TypedArray;
 import android.os.Parcel;
@@ -23,8 +24,6 @@
 import android.preference.DialogPreference;
 import android.util.AttributeSet;
 
-import dalvik.annotation.compat.UnsupportedAppUsage;
-
 /**
  * The {@link YesNoPreference} is a preference to show a dialog with Yes and No
  * buttons.
diff --git a/core/java/com/android/internal/util/ArrayUtils.java b/core/java/com/android/internal/util/ArrayUtils.java
index b73ecd1..5a91880 100644
--- a/core/java/com/android/internal/util/ArrayUtils.java
+++ b/core/java/com/android/internal/util/ArrayUtils.java
@@ -18,7 +18,7 @@
 
 import android.annotation.NonNull;
 import android.annotation.Nullable;
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.util.ArraySet;
 
 import dalvik.system.VMRuntime;
diff --git a/core/java/com/android/internal/util/AsyncChannel.java b/core/java/com/android/internal/util/AsyncChannel.java
index b0888f2..f087718 100644
--- a/core/java/com/android/internal/util/AsyncChannel.java
+++ b/core/java/com/android/internal/util/AsyncChannel.java
@@ -16,7 +16,7 @@
 
 package com.android.internal.util;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
diff --git a/core/java/com/android/internal/util/BitwiseInputStream.java b/core/java/com/android/internal/util/BitwiseInputStream.java
index 6ff67e9..ffae3ce 100644
--- a/core/java/com/android/internal/util/BitwiseInputStream.java
+++ b/core/java/com/android/internal/util/BitwiseInputStream.java
@@ -16,7 +16,7 @@
 
 package com.android.internal.util;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 
 /**
  * An object that provides bitwise incremental read access to a byte array.
diff --git a/core/java/com/android/internal/util/BitwiseOutputStream.java b/core/java/com/android/internal/util/BitwiseOutputStream.java
index cdd6f17..9f41508 100644
--- a/core/java/com/android/internal/util/BitwiseOutputStream.java
+++ b/core/java/com/android/internal/util/BitwiseOutputStream.java
@@ -16,7 +16,7 @@
 
 package com.android.internal.util;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 
 /**
  * An object that provides bitwise incremental write access to a byte array.
diff --git a/core/java/com/android/internal/util/CharSequences.java b/core/java/com/android/internal/util/CharSequences.java
index 6b6c43c..82ef200 100644
--- a/core/java/com/android/internal/util/CharSequences.java
+++ b/core/java/com/android/internal/util/CharSequences.java
@@ -16,7 +16,7 @@
 
 package com.android.internal.util;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 
 /**
  * {@link CharSequence} utility methods.
diff --git a/core/java/com/android/internal/util/FastMath.java b/core/java/com/android/internal/util/FastMath.java
index 35efe70..b7dbee5 100644
--- a/core/java/com/android/internal/util/FastMath.java
+++ b/core/java/com/android/internal/util/FastMath.java
@@ -16,7 +16,7 @@
 
 package com.android.internal.util;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 
 /**
  * Fast and loose math routines.
diff --git a/core/java/com/android/internal/util/FastPrintWriter.java b/core/java/com/android/internal/util/FastPrintWriter.java
index 981fbaa..63124de 100644
--- a/core/java/com/android/internal/util/FastPrintWriter.java
+++ b/core/java/com/android/internal/util/FastPrintWriter.java
@@ -16,7 +16,7 @@
 
 package com.android.internal.util;
 
-import android.annotation.UnsupportedAppUsage;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.util.Log;
 import android.util.Printer;
 
diff --git a/core/java/com/android/internal/util/FastXmlSerializer.java b/core/java/com/android/internal/util/FastXmlSerializer.java
index 9f76aeb..94e07a8 100644
--- a/core/java/com/android/internal/util/FastXmlSerializer.java
+++ b/core/java/com/android/internal/util/FastXmlSerializer.java
@@ -16,9 +16,10 @@
 
 package com.android.internal.util;
 
+import android.compat.annotation.UnsupportedAppUsage;
+
 import org.xmlpull.v1.XmlSerializer;
 
-import android.annotation.UnsupportedAppUsage;
 import java.io.IOException;
 import java.io.OutputStream;
 import java.io.OutputStreamWriter;
diff --git a/packages/SettingsLib/src/com/android/settingslib/DeviceInfoUtils.java b/packages/SettingsLib/src/com/android/settingslib/DeviceInfoUtils.java
index 69bd0ed..ff00fb3 100644
--- a/packages/SettingsLib/src/com/android/settingslib/DeviceInfoUtils.java
+++ b/packages/SettingsLib/src/com/android/settingslib/DeviceInfoUtils.java
@@ -16,8 +16,6 @@
 
 package com.android.settingslib;
 
-import static android.content.Context.TELEPHONY_SERVICE;
-
 import android.content.Context;
 import android.content.Intent;
 import android.content.pm.ApplicationInfo;
@@ -172,36 +170,38 @@
         }
     }
 
-    public static String getFormattedPhoneNumber(Context context, SubscriptionInfo subscriptionInfo) {
+    /**
+     * Format a phone number.
+     * @param subscriptionInfo {@link SubscriptionInfo} subscription information.
+     * @return Returns formatted phone number.
+     */
+    public static String getFormattedPhoneNumber(Context context,
+            SubscriptionInfo subscriptionInfo) {
         String formattedNumber = null;
         if (subscriptionInfo != null) {
-            final TelephonyManager telephonyManager =
-                    (TelephonyManager) context.getSystemService(TELEPHONY_SERVICE);
-            final String rawNumber =
-                    telephonyManager.getLine1Number(subscriptionInfo.getSubscriptionId());
+            final TelephonyManager telephonyManager = context.getSystemService(
+                    TelephonyManager.class);
+            final String rawNumber = telephonyManager.createForSubscriptionId(
+                    subscriptionInfo.getSubscriptionId()).getLine1Number();
             if (!TextUtils.isEmpty(rawNumber)) {
                 formattedNumber = PhoneNumberUtils.formatNumber(rawNumber);
             }
-
         }
         return formattedNumber;
     }
 
     public static String getFormattedPhoneNumbers(Context context,
-            List<SubscriptionInfo> subscriptionInfo) {
+            List<SubscriptionInfo> subscriptionInfoList) {
         StringBuilder sb = new StringBuilder();
-        if (subscriptionInfo != null) {
-            final TelephonyManager telephonyManager =
-                    (TelephonyManager) context.getSystemService(TELEPHONY_SERVICE);
-            final int count = subscriptionInfo.size();
-            for (int i = 0; i < count; i++) {
-                final String rawNumber = telephonyManager.getLine1Number(
-                        subscriptionInfo.get(i).getSubscriptionId());
+        if (subscriptionInfoList != null) {
+            final TelephonyManager telephonyManager = context.getSystemService(
+                    TelephonyManager.class);
+            final int count = subscriptionInfoList.size();
+            for (SubscriptionInfo subscriptionInfo : subscriptionInfoList) {
+                final String rawNumber = telephonyManager.createForSubscriptionId(
+                        subscriptionInfo.getSubscriptionId()).getLine1Number();
                 if (!TextUtils.isEmpty(rawNumber)) {
-                    sb.append(PhoneNumberUtils.formatNumber(rawNumber));
-                    if (i < count - 1) {
-                        sb.append("\n");
-                    }
+                    sb.append(PhoneNumberUtils.formatNumber(rawNumber)).append("\n");
                 }
             }
         }
diff --git a/packages/Tethering/Android.bp b/packages/Tethering/Android.bp
index 8987b54..d297f3f 100644
--- a/packages/Tethering/Android.bp
+++ b/packages/Tethering/Android.bp
@@ -32,6 +32,7 @@
     ],
     libs: [
         "framework-tethering",
+        "unsupportedappusage",
     ],
 
     manifest: "AndroidManifestBase.xml",
diff --git a/packages/Tethering/res/values/strings.xml b/packages/Tethering/res/values/strings.xml
index ca866a9..792bce9 100644
--- a/packages/Tethering/res/values/strings.xml
+++ b/packages/Tethering/res/values/strings.xml
@@ -1,4 +1,18 @@
 <?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2020 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.
+-->
 <resources>
     <!-- Shown when the device is tethered -->
     <!-- Strings for tethered notification title [CHAR LIMIT=200] -->
@@ -9,8 +23,11 @@
     <!-- This notification is shown when tethering has been disabled on a user's device.
     The device is managed by the user's employer. Tethering can't be turned on unless the
     IT administrator allows it. The noun "admin" is another reference for "IT administrator." -->
-    <!-- Strings for tether disabling notification title  [CHAR LIMIT=200] -->
+    <!-- Strings for tether disabling notification title [CHAR LIMIT=200] -->
     <string name="disable_tether_notification_title">Tethering is disabled</string>
-    <!-- Strings for tether disabling notification message  [CHAR LIMIT=200] -->
+    <!-- Strings for tether disabling notification message [CHAR LIMIT=200] -->
     <string name="disable_tether_notification_message">Contact your admin for details</string>
+
+    <!-- Strings for tether notification channel name [CHAR LIMIT=200] -->
+    <string name="notification_channel_tethering_status">Hotspot &amp; tethering status</string>
 </resources>
\ No newline at end of file
diff --git a/packages/Tethering/src/com/android/server/connectivity/tethering/Tethering.java b/packages/Tethering/src/com/android/server/connectivity/tethering/Tethering.java
index 2119791..5b97f50 100644
--- a/packages/Tethering/src/com/android/server/connectivity/tethering/Tethering.java
+++ b/packages/Tethering/src/com/android/server/connectivity/tethering/Tethering.java
@@ -50,6 +50,7 @@
 import static android.telephony.SubscriptionManager.INVALID_SUBSCRIPTION_ID;
 
 import android.app.Notification;
+import android.app.NotificationChannel;
 import android.app.NotificationManager;
 import android.app.PendingIntent;
 import android.bluetooth.BluetoothAdapter;
@@ -106,8 +107,6 @@
 import androidx.annotation.Nullable;
 
 import com.android.internal.annotations.VisibleForTesting;
-import com.android.internal.messages.nano.SystemMessageProto.SystemMessage;
-import com.android.internal.notification.SystemNotificationChannels;
 import com.android.internal.util.IndentingPrintWriter;
 import com.android.internal.util.MessageUtils;
 import com.android.internal.util.State;
@@ -663,19 +662,19 @@
 
         if (usbTethered) {
             if (wifiTethered || bluetoothTethered) {
-                showTetheredNotification(SystemMessage.NOTE_TETHER_GENERAL);
+                showTetheredNotification(R.drawable.stat_sys_tether_general);
             } else {
-                showTetheredNotification(SystemMessage.NOTE_TETHER_USB);
+                showTetheredNotification(R.drawable.stat_sys_tether_usb);
             }
         } else if (wifiTethered) {
             if (bluetoothTethered) {
-                showTetheredNotification(SystemMessage.NOTE_TETHER_GENERAL);
+                showTetheredNotification(R.drawable.stat_sys_tether_general);
             } else {
                 /* We now have a status bar icon for WifiTethering, so drop the notification */
                 clearTetheredNotification();
             }
         } else if (bluetoothTethered) {
-            showTetheredNotification(SystemMessage.NOTE_TETHER_BLUETOOTH);
+            showTetheredNotification(R.drawable.stat_sys_tether_bluetooth);
         } else {
             clearTetheredNotification();
         }
@@ -688,30 +687,22 @@
     @VisibleForTesting
     protected void showTetheredNotification(int id, boolean tetheringOn) {
         NotificationManager notificationManager =
-                (NotificationManager) mContext.getSystemService(Context.NOTIFICATION_SERVICE);
+                (NotificationManager) mContext.createContextAsUser(UserHandle.ALL, 0)
+                        .getSystemService(Context.NOTIFICATION_SERVICE);
         if (notificationManager == null) {
             return;
         }
-        int icon = 0;
-        switch(id) {
-            case SystemMessage.NOTE_TETHER_USB:
-                icon = R.drawable.stat_sys_tether_usb;
-                break;
-            case SystemMessage.NOTE_TETHER_BLUETOOTH:
-                icon = R.drawable.stat_sys_tether_bluetooth;
-                break;
-            case SystemMessage.NOTE_TETHER_GENERAL:
-            default:
-                icon = R.drawable.stat_sys_tether_general;
-                break;
-        }
+        final NotificationChannel channel = new NotificationChannel(
+                "TETHERING_STATUS",
+                mContext.getResources().getString(R.string.notification_channel_tethering_status),
+                NotificationManager.IMPORTANCE_LOW);
+        notificationManager.createNotificationChannel(channel);
 
         if (mLastNotificationId != 0) {
-            if (mLastNotificationId == icon) {
+            if (mLastNotificationId == id) {
                 return;
             }
-            notificationManager.cancelAsUser(null, mLastNotificationId,
-                    UserHandle.ALL);
+            notificationManager.cancel(null, mLastNotificationId);
             mLastNotificationId = 0;
         }
 
@@ -719,8 +710,8 @@
         intent.setClassName("com.android.settings", "com.android.settings.TetherSettings");
         intent.setFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);
 
-        PendingIntent pi = PendingIntent.getActivityAsUser(mContext, 0, intent, 0,
-                null, UserHandle.CURRENT);
+        PendingIntent pi = PendingIntent.getActivity(
+                mContext.createContextAsUser(UserHandle.CURRENT, 0), 0, intent, 0, null);
 
         Resources r = mContext.getResources();
         final CharSequence title;
@@ -735,32 +726,31 @@
         }
 
         if (mTetheredNotificationBuilder == null) {
-            mTetheredNotificationBuilder = new Notification.Builder(mContext,
-                    SystemNotificationChannels.NETWORK_STATUS);
+            mTetheredNotificationBuilder = new Notification.Builder(mContext, channel.getId());
             mTetheredNotificationBuilder.setWhen(0)
                     .setOngoing(true)
                     .setColor(mContext.getColor(
-                            com.android.internal.R.color.system_notification_accent_color))
+                            android.R.color.system_notification_accent_color))
                     .setVisibility(Notification.VISIBILITY_PUBLIC)
                     .setCategory(Notification.CATEGORY_STATUS);
         }
-        mTetheredNotificationBuilder.setSmallIcon(icon)
+        mTetheredNotificationBuilder.setSmallIcon(id)
                 .setContentTitle(title)
                 .setContentText(message)
                 .setContentIntent(pi);
         mLastNotificationId = id;
 
-        notificationManager.notifyAsUser(null, mLastNotificationId,
-                mTetheredNotificationBuilder.buildInto(new Notification()), UserHandle.ALL);
+        notificationManager.notify(null, mLastNotificationId,
+                mTetheredNotificationBuilder.buildInto(new Notification()));
     }
 
     @VisibleForTesting
     protected void clearTetheredNotification() {
         NotificationManager notificationManager =
-                (NotificationManager) mContext.getSystemService(Context.NOTIFICATION_SERVICE);
+                (NotificationManager) mContext.createContextAsUser(UserHandle.ALL, 0)
+                        .getSystemService(Context.NOTIFICATION_SERVICE);
         if (notificationManager != null && mLastNotificationId != 0) {
-            notificationManager.cancelAsUser(null, mLastNotificationId,
-                    UserHandle.ALL);
+            notificationManager.cancel(null, mLastNotificationId);
             mLastNotificationId = 0;
         }
     }
diff --git a/packages/Tethering/tests/unit/src/com/android/server/connectivity/tethering/TetheringTest.java b/packages/Tethering/tests/unit/src/com/android/server/connectivity/tethering/TetheringTest.java
index 5ca21f71..4edde0a 100644
--- a/packages/Tethering/tests/unit/src/com/android/server/connectivity/tethering/TetheringTest.java
+++ b/packages/Tethering/tests/unit/src/com/android/server/connectivity/tethering/TetheringTest.java
@@ -224,6 +224,11 @@
             if (TelephonyManager.class.equals(serviceClass)) return Context.TELEPHONY_SERVICE;
             return super.getSystemServiceName(serviceClass);
         }
+
+        @Override
+        public Context createContextAsUser(UserHandle user, int flags) {
+            return mContext;
+        }
     }
 
     public class MockIpServerDependencies extends IpServer.Dependencies {
@@ -432,6 +437,7 @@
                 .thenReturn(true);
 
         mServiceContext = new TestContext(mContext);
+        when(mContext.getSystemService(Context.NOTIFICATION_SERVICE)).thenReturn(null);
         mContentResolver = new MockContentResolver(mServiceContext);
         mContentResolver.addProvider(Settings.AUTHORITY, new FakeSettingsProvider());
         Settings.Global.putInt(mContentResolver, TETHER_ENABLE_LEGACY_DHCP_SERVER, 0);
diff --git a/services/core/java/com/android/server/ConnectivityService.java b/services/core/java/com/android/server/ConnectivityService.java
index fd86aea..3a8a736 100644
--- a/services/core/java/com/android/server/ConnectivityService.java
+++ b/services/core/java/com/android/server/ConnectivityService.java
@@ -366,10 +366,10 @@
     private static final int EVENT_PROXY_HAS_CHANGED = 16;
 
     /**
-     * used internally when registering NetworkFactories
-     * obj = NetworkFactoryInfo
+     * used internally when registering NetworkProviders
+     * obj = NetworkProviderInfo
      */
-    private static final int EVENT_REGISTER_NETWORK_FACTORY = 17;
+    private static final int EVENT_REGISTER_NETWORK_PROVIDER = 17;
 
     /**
      * used internally when registering NetworkAgents
@@ -405,10 +405,10 @@
     private static final int EVENT_RELEASE_NETWORK_REQUEST = 22;
 
     /**
-     * used internally when registering NetworkFactories
+     * used internally when registering NetworkProviders
      * obj = Messenger
      */
-    private static final int EVENT_UNREGISTER_NETWORK_FACTORY = 23;
+    private static final int EVENT_UNREGISTER_NETWORK_PROVIDER = 23;
 
     /**
      * used internally to expire a wakelock when transitioning
@@ -2387,9 +2387,9 @@
             return;
         }
 
-        pw.print("NetworkFactories for:");
-        for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) {
-            pw.print(" " + nfi.name);
+        pw.print("NetworkProviders for:");
+        for (NetworkProviderInfo npi : mNetworkProviderInfos.values()) {
+            pw.print(" " + npi.name);
         }
         pw.println();
         pw.println();
@@ -2720,7 +2720,7 @@
                         nai.lastValidated = valid;
                         nai.everValidated |= valid;
                         updateCapabilities(oldScore, nai, nai.networkCapabilities);
-                        // If score has changed, rebroadcast to NetworkFactories. b/17726566
+                        // If score has changed, rebroadcast to NetworkProviders. b/17726566
                         if (oldScore != nai.getCurrentScore()) sendUpdatedScoreToFactories(nai);
                         if (valid) {
                             handleFreshlyValidatedNetwork(nai);
@@ -2835,6 +2835,7 @@
             return true;
         }
 
+        // TODO: delete when direct use of registerNetworkFactory is no longer supported.
         private boolean maybeHandleNetworkFactoryMessage(Message msg) {
             switch (msg.what) {
                 default:
@@ -3024,16 +3025,16 @@
     private void handleAsyncChannelHalfConnect(Message msg) {
         ensureRunningOnConnectivityServiceThread();
         final AsyncChannel ac = (AsyncChannel) msg.obj;
-        if (mNetworkFactoryInfos.containsKey(msg.replyTo)) {
+        if (mNetworkProviderInfos.containsKey(msg.replyTo)) {
             if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) {
                 if (VDBG) log("NetworkFactory connected");
                 // Finish setting up the full connection
-                NetworkFactoryInfo nfi = mNetworkFactoryInfos.get(msg.replyTo);
-                nfi.completeConnection();
-                sendAllRequestsToFactory(nfi);
+                NetworkProviderInfo npi = mNetworkProviderInfos.get(msg.replyTo);
+                npi.completeConnection();
+                sendAllRequestsToProvider(npi);
             } else {
                 loge("Error connecting NetworkFactory");
-                mNetworkFactoryInfos.remove(msg.obj);
+                mNetworkProviderInfos.remove(msg.obj);
             }
         } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) {
             if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) {
@@ -3065,8 +3066,8 @@
         if (nai != null) {
             disconnectAndDestroyNetwork(nai);
         } else {
-            NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(msg.replyTo);
-            if (DBG && nfi != null) log("unregisterNetworkFactory for " + nfi.name);
+            NetworkProviderInfo npi = mNetworkProviderInfos.remove(msg.replyTo);
+            if (DBG && npi != null) log("unregisterNetworkFactory for " + npi.name);
         }
     }
 
@@ -3149,7 +3150,7 @@
             // ip[6]tables to flush routes and remove the incoming packet mark rule, so do it
             // after we've rematched networks with requests which should make a potential
             // fallback network the default or requested a new network from the
-            // NetworkFactories, so network traffic isn't interrupted for an unnecessarily
+            // NetworkProviders, so network traffic isn't interrupted for an unnecessarily
             // long time.
             destroyNativeNetwork(nai);
             mDnsManager.removeNetwork(nai.network);
@@ -3412,8 +3413,8 @@
                 }
             }
 
-            for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) {
-                nfi.cancelRequest(nri.request);
+            for (NetworkProviderInfo npi : mNetworkProviderInfos.values()) {
+                npi.cancelRequest(nri.request);
             }
         } else {
             // listens don't have a singular affectedNetwork.  Check all networks to see
@@ -3848,12 +3849,12 @@
                     handleApplyDefaultProxy((ProxyInfo)msg.obj);
                     break;
                 }
-                case EVENT_REGISTER_NETWORK_FACTORY: {
-                    handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj);
+                case EVENT_REGISTER_NETWORK_PROVIDER: {
+                    handleRegisterNetworkProvider((NetworkProviderInfo) msg.obj);
                     break;
                 }
-                case EVENT_UNREGISTER_NETWORK_FACTORY: {
-                    handleUnregisterNetworkFactory((Messenger)msg.obj);
+                case EVENT_UNREGISTER_NETWORK_PROVIDER: {
+                    handleUnregisterNetworkProvider((Messenger) msg.obj);
                     break;
                 }
                 case EVENT_REGISTER_NETWORK_AGENT: {
@@ -4898,7 +4899,7 @@
         }
     };
 
-    private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos = new HashMap<>();
+    private final HashMap<Messenger, NetworkProviderInfo> mNetworkProviderInfos = new HashMap<>();
     private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = new HashMap<>();
 
     private static final int MAX_NETWORK_REQUESTS_PER_UID = 100;
@@ -4906,18 +4907,18 @@
     @GuardedBy("mUidToNetworkRequestCount")
     private final SparseIntArray mUidToNetworkRequestCount = new SparseIntArray();
 
-    private static class NetworkFactoryInfo {
+    private static class NetworkProviderInfo {
         public final String name;
         public final Messenger messenger;
         private final AsyncChannel mAsyncChannel;
         private final IBinder.DeathRecipient mDeathRecipient;
-        public final int factorySerialNumber;
+        public final int providerId;
 
-        NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel,
-                int factorySerialNumber, IBinder.DeathRecipient deathRecipient) {
+        NetworkProviderInfo(String name, Messenger messenger, AsyncChannel asyncChannel,
+                int providerId, IBinder.DeathRecipient deathRecipient) {
             this.name = name;
             this.messenger = messenger;
-            this.factorySerialNumber = factorySerialNumber;
+            this.providerId = providerId;
             mAsyncChannel = asyncChannel;
             mDeathRecipient = deathRecipient;
 
@@ -4935,17 +4936,17 @@
                 messenger.send(Message.obtain(null /* handler */, what, arg1, arg2, obj));
             } catch (RemoteException e) {
                 // Remote process died. Ignore; the death recipient will remove this
-                // NetworkFactoryInfo from mNetworkFactoryInfos.
+                // NetworkProviderInfo from mNetworkProviderInfos.
             }
         }
 
-        void requestNetwork(NetworkRequest request, int score, int servingSerialNumber) {
+        void requestNetwork(NetworkRequest request, int score, int servingProviderId) {
             if (isLegacyNetworkFactory()) {
                 mAsyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score,
-                        servingSerialNumber, request);
+                        servingProviderId, request);
             } else {
                 sendMessageToNetworkProvider(NetworkProvider.CMD_REQUEST_NETWORK, score,
-                            servingSerialNumber, request);
+                            servingProviderId, request);
             }
         }
 
@@ -5358,45 +5359,45 @@
     @Override
     public int registerNetworkFactory(Messenger messenger, String name) {
         enforceNetworkFactoryPermission();
-        NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel(),
+        NetworkProviderInfo npi = new NetworkProviderInfo(name, messenger, new AsyncChannel(),
                 nextNetworkProviderId(), null /* deathRecipient */);
-        mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi));
-        return nfi.factorySerialNumber;
+        mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_PROVIDER, npi));
+        return npi.providerId;
     }
 
-    private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) {
-        if (mNetworkFactoryInfos.containsKey(nfi.messenger)) {
+    private void handleRegisterNetworkProvider(NetworkProviderInfo npi) {
+        if (mNetworkProviderInfos.containsKey(npi.messenger)) {
             // Avoid creating duplicates. even if an app makes a direct AIDL call.
             // This will never happen if an app calls ConnectivityManager#registerNetworkProvider,
             // as that will throw if a duplicate provider is registered.
-            Slog.e(TAG, "Attempt to register existing NetworkFactoryInfo "
-                    + mNetworkFactoryInfos.get(nfi.messenger).name);
+            Slog.e(TAG, "Attempt to register existing NetworkProviderInfo "
+                    + mNetworkProviderInfos.get(npi.messenger).name);
             return;
         }
 
-        if (DBG) log("Got NetworkFactory Messenger for " + nfi.name);
-        mNetworkFactoryInfos.put(nfi.messenger, nfi);
-        nfi.connect(mContext, mTrackerHandler);
-        if (!nfi.isLegacyNetworkFactory()) {
+        if (DBG) log("Got NetworkProvider Messenger for " + npi.name);
+        mNetworkProviderInfos.put(npi.messenger, npi);
+        npi.connect(mContext, mTrackerHandler);
+        if (!npi.isLegacyNetworkFactory()) {
             // Legacy NetworkFactories get their requests when their AsyncChannel connects.
-            sendAllRequestsToFactory(nfi);
+            sendAllRequestsToProvider(npi);
         }
     }
 
     @Override
     public int registerNetworkProvider(Messenger messenger, String name) {
         enforceNetworkFactoryPermission();
-        NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger,
+        NetworkProviderInfo npi = new NetworkProviderInfo(name, messenger,
                 null /* asyncChannel */, nextNetworkProviderId(),
                 () -> unregisterNetworkProvider(messenger));
-        mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi));
-        return nfi.factorySerialNumber;
+        mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_PROVIDER, npi));
+        return npi.providerId;
     }
 
     @Override
     public void unregisterNetworkProvider(Messenger messenger) {
         enforceNetworkFactoryPermission();
-        mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger));
+        mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_PROVIDER, messenger));
     }
 
     @Override
@@ -5404,13 +5405,13 @@
         unregisterNetworkProvider(messenger);
     }
 
-    private void handleUnregisterNetworkFactory(Messenger messenger) {
-        NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger);
-        if (nfi == null) {
-            loge("Failed to find Messenger in unregisterNetworkFactory");
+    private void handleUnregisterNetworkProvider(Messenger messenger) {
+        NetworkProviderInfo npi = mNetworkProviderInfos.remove(messenger);
+        if (npi == null) {
+            loge("Failed to find Messenger in unregisterNetworkProvider");
             return;
         }
-        if (DBG) log("unregisterNetworkFactory for " + nfi.name);
+        if (DBG) log("unregisterNetworkProvider for " + npi.name);
     }
 
     @Override
@@ -5484,7 +5485,7 @@
             LinkProperties linkProperties, NetworkCapabilities networkCapabilities,
             int currentScore, NetworkMisc networkMisc) {
         return registerNetworkAgent(messenger, networkInfo, linkProperties, networkCapabilities,
-                currentScore, networkMisc, NetworkFactory.SerialNumber.NONE);
+                currentScore, networkMisc, NetworkProvider.ID_NONE);
     }
 
     /**
@@ -5500,11 +5501,11 @@
      * @param currentScore the initial score of the network. See
      *         {@link NetworkAgentInfo#getCurrentScore}.
      * @param networkMisc metadata about the network. This is never updated.
-     * @param factorySerialNumber the serial number of the factory owning this NetworkAgent.
+     * @param providerId the ID of the provider owning this NetworkAgent.
      */
     public int registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo,
             LinkProperties linkProperties, NetworkCapabilities networkCapabilities,
-            int currentScore, NetworkMisc networkMisc, int factorySerialNumber) {
+            int currentScore, NetworkMisc networkMisc, int providerId) {
         enforceNetworkFactoryPermission();
 
         LinkProperties lp = new LinkProperties(linkProperties);
@@ -5517,7 +5518,7 @@
         final NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(),
                 new Network(mNetIdManager.reserveNetId()), new NetworkInfo(networkInfo), lp, nc,
                 ns, mContext, mTrackerHandler, new NetworkMisc(networkMisc), this, mNetd,
-                mDnsResolver, mNMS, factorySerialNumber);
+                mDnsResolver, mNMS, providerId);
         // Make sure the network capabilities reflect what the agent info says.
         nai.getAndSetNetworkCapabilities(mixInCapabilities(nai, nc));
         final String extraInfo = networkInfo.getExtraInfo();
@@ -5796,7 +5797,7 @@
         // Once a NetworkAgent is connected, complain if some immutable capabilities are removed.
          // Don't complain for VPNs since they're not driven by requests and there is no risk of
          // causing a connect/teardown loop.
-         // TODO: remove this altogether and make it the responsibility of the NetworkFactories to
+         // TODO: remove this altogether and make it the responsibility of the NetworkProviders to
          // avoid connect/teardown loops.
         if (nai.everConnected &&
                 !nai.isVPN() &&
@@ -6036,13 +6037,13 @@
         if (VDBG || DDBG){
             log("sending new Min Network Score(" + score + "): " + networkRequest.toString());
         }
-        for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) {
-            nfi.requestNetwork(networkRequest, score, serial);
+        for (NetworkProviderInfo npi : mNetworkProviderInfos.values()) {
+            npi.requestNetwork(networkRequest, score, serial);
         }
     }
 
     /** Sends all current NetworkRequests to the specified factory. */
-    private void sendAllRequestsToFactory(NetworkFactoryInfo nfi) {
+    private void sendAllRequestsToProvider(NetworkProviderInfo npi) {
         ensureRunningOnConnectivityServiceThread();
         for (NetworkRequestInfo nri : mNetworkRequests.values()) {
             if (nri.request.isListen()) continue;
@@ -6054,9 +6055,9 @@
                 serial = nai.factorySerialNumber;
             } else {
                 score = 0;
-                serial = NetworkFactory.SerialNumber.NONE;
+                serial = NetworkProvider.ID_NONE;
             }
-            nfi.requestNetwork(nri.request, score, serial);
+            npi.requestNetwork(nri.request, score, serial);
         }
     }
 
@@ -6337,11 +6338,11 @@
                     Slog.wtf(TAG, "BUG: " + newSatisfier.name() + " already has " + nri.request);
                 }
                 addedRequests.add(nri);
-                // Tell NetworkFactories about the new score, so they can stop
+                // Tell NetworkProviders about the new score, so they can stop
                 // trying to connect if they know they cannot match it.
                 // TODO - this could get expensive if we have a lot of requests for this
                 // network.  Think about if there is a way to reduce this.  Push
-                // netid->request mapping to each factory?
+                // netid->request mapping to each provider?
                 sendUpdatedScoreToFactories(nri.request, newSatisfier);
                 if (isDefaultRequest(nri)) {
                     isNewDefault = true;
@@ -6370,7 +6371,7 @@
                 } else {
                     Slog.wtf(TAG, "BUG: Removing request " + nri.request.requestId + " from " +
                             newNetwork.name() +
-                            " without updating mSatisfier or factories!");
+                            " without updating mSatisfier or providers!");
                 }
                 // TODO: Technically, sending CALLBACK_LOST here is
                 // incorrect if there is a replacement network currently
diff --git a/services/core/java/com/android/server/connectivity/Vpn.java b/services/core/java/com/android/server/connectivity/Vpn.java
index 09790c4..a46ada8 100644
--- a/services/core/java/com/android/server/connectivity/Vpn.java
+++ b/services/core/java/com/android/server/connectivity/Vpn.java
@@ -54,10 +54,10 @@
 import android.net.Network;
 import android.net.NetworkAgent;
 import android.net.NetworkCapabilities;
-import android.net.NetworkFactory;
 import android.net.NetworkInfo;
 import android.net.NetworkInfo.DetailedState;
 import android.net.NetworkMisc;
+import android.net.NetworkProvider;
 import android.net.RouteInfo;
 import android.net.UidRange;
 import android.net.VpnService;
@@ -958,7 +958,7 @@
             mNetworkAgent = new NetworkAgent(mLooper, mContext, NETWORKTYPE /* logtag */,
                     mNetworkInfo, mNetworkCapabilities, lp,
                     ConnectivityConstants.VPN_DEFAULT_SCORE, networkMisc,
-                    NetworkFactory.SerialNumber.VPN) {
+                    NetworkProvider.ID_VPN) {
                             @Override
                             public void unwanted() {
                                 // We are user controlled, not driven by NetworkRequest.
diff --git a/tests/net/integration/util/com/android/server/NetworkAgentWrapper.java b/tests/net/integration/util/com/android/server/NetworkAgentWrapper.java
index 1e8d83c..18474a8 100644
--- a/tests/net/integration/util/com/android/server/NetworkAgentWrapper.java
+++ b/tests/net/integration/util/com/android/server/NetworkAgentWrapper.java
@@ -36,9 +36,9 @@
 import android.net.Network;
 import android.net.NetworkAgent;
 import android.net.NetworkCapabilities;
-import android.net.NetworkFactory;
 import android.net.NetworkInfo;
 import android.net.NetworkMisc;
+import android.net.NetworkProvider;
 import android.net.NetworkSpecifier;
 import android.net.SocketKeepalive;
 import android.net.UidRange;
@@ -114,7 +114,7 @@
         public InstrumentedNetworkAgent(NetworkAgentWrapper wrapper, LinkProperties lp) {
             super(wrapper.mHandlerThread.getLooper(), wrapper.mContext, wrapper.mLogTag,
                     wrapper.mNetworkInfo, wrapper.mNetworkCapabilities, lp, wrapper.mScore,
-                    new NetworkMisc(), NetworkFactory.SerialNumber.NONE);
+                    new NetworkMisc(), NetworkProvider.ID_NONE);
             mWrapper = wrapper;
         }
 
diff --git a/tests/net/java/com/android/server/connectivity/LingerMonitorTest.java b/tests/net/java/com/android/server/connectivity/LingerMonitorTest.java
index 535298f..82cb193 100644
--- a/tests/net/java/com/android/server/connectivity/LingerMonitorTest.java
+++ b/tests/net/java/com/android/server/connectivity/LingerMonitorTest.java
@@ -36,9 +36,9 @@
 import android.net.INetd;
 import android.net.Network;
 import android.net.NetworkCapabilities;
-import android.net.NetworkFactory;
 import android.net.NetworkInfo;
 import android.net.NetworkMisc;
+import android.net.NetworkProvider;
 import android.net.NetworkScore;
 import android.os.INetworkManagementService;
 import android.text.format.DateUtils;
@@ -359,7 +359,7 @@
         ns.putIntExtension(NetworkScore.LEGACY_SCORE, 50);
         NetworkAgentInfo nai = new NetworkAgentInfo(null, null, new Network(netId), info, null,
                 caps, ns, mCtx, null, mMisc, mConnService, mNetd, mDnsResolver, mNMS,
-                NetworkFactory.SerialNumber.NONE);
+                NetworkProvider.ID_NONE);
         nai.everValidated = true;
         return nai;
     }