Track native changes: Rework InputApplicationInfo

First we move it inside of InputWindowInfo instead of InputWindowHandle
so it is part of the data sent across binder. Second we give it a persistent
identity of an IBinder token and use this for comparisons.

Bug: 80101428
Bug: 113136004
Bug: 111440400
Test: EndToEndNativeInputTest. Existing tests pass.
Change-Id: Id89a40e66887d834020f8e645fd1fb48adb7ee2e
diff --git a/services/core/java/com/android/server/wm/TaskPositioner.java b/services/core/java/com/android/server/wm/TaskPositioner.java
index c1b7cb5..b88e581 100644
--- a/services/core/java/com/android/server/wm/TaskPositioner.java
+++ b/services/core/java/com/android/server/wm/TaskPositioner.java
@@ -33,6 +33,7 @@
 import android.app.IActivityTaskManager;
 import android.graphics.Point;
 import android.graphics.Rect;
+import android.os.Binder;
 import android.os.Looper;
 import android.os.Process;
 import android.os.RemoteException;
@@ -261,7 +262,7 @@
                 mClientChannel, mService.mAnimationHandler.getLooper(),
                 mService.mAnimator.getChoreographer());
 
-        mDragApplicationHandle = new InputApplicationHandle(null);
+        mDragApplicationHandle = new InputApplicationHandle(new Binder());
         mDragApplicationHandle.name = TAG;
         mDragApplicationHandle.dispatchingTimeoutNanos =
                 WindowManagerService.DEFAULT_INPUT_DISPATCHING_TIMEOUT_NANOS;