DO NOT MERGE Take advantage of new MotionEvent flag to prevent tapjacking. am: b431433 am: ae0dc4e am: ac5a29e
am: 7a43bba  -s ours

* commit '7a43bba37948402bbdbe7f58c8df677c0e1bf0c3':
  DO NOT MERGE Take advantage of new MotionEvent flag to prevent tapjacking.

Change-Id: I0bf018f19608d45dd027c980f3af68a70eddabae