Add new WindowId for cross-process monitoring of focus.

This is a class representing a window and providing limited
interaction with it, which can be handed across processes.

Change-Id: I22885f2064a9cc8c68d690a5858c2e28bbb6a0f3
diff --git a/Android.mk b/Android.mk
index 5dc3523..43791c7 100644
--- a/Android.mk
+++ b/Android.mk
@@ -146,7 +146,7 @@
 	core/java/android/os/IRemoteCallback.aidl \
 	core/java/android/os/ISchedulingPolicyService.aidl \
 	core/java/android/os/IUpdateLock.aidl \
-        core/java/android/os/IUserManager.aidl \
+	core/java/android/os/IUserManager.aidl \
 	core/java/android/os/IVibratorService.aidl \
 	core/java/android/service/dreams/IDreamManager.aidl \
 	core/java/android/service/dreams/IDreamService.aidl \
@@ -164,6 +164,8 @@
 	core/java/android/view/IOnKeyguardExitResult.aidl \
 	core/java/android/view/IRotationWatcher.aidl \
 	core/java/android/view/IWindow.aidl \
+	core/java/android/view/IWindowFocusObserver.aidl \
+	core/java/android/view/IWindowId.aidl \
 	core/java/android/view/IWindowManager.aidl \
 	core/java/android/view/IWindowSession.aidl \
 	core/java/android/speech/IRecognitionListener.aidl \