Merge "Fix threading issue with splash screens" into oc-dr1-dev

services/core/java/com/android/server/wm/AppWindowContainerController.java

@@ -685,7 +685,10 @@ public class AppWindowContainerController
 
             if (DEBUG_STARTING_WINDOW) Slog.v(TAG_WM, "Schedule remove starting " + mContainer
                     + " startingWindow=" + mContainer.startingWindow);
-            mHandler.post(mRemoveStartingWindow);
+
+            // Use the same thread to remove the window as we used to add it, as otherwise we end up
+            // with things in the view hierarchy being called from different threads.
+            mService.mAnimationHandler.post(mRemoveStartingWindow);
         }
     }