Merge "Crop wallpaper windows to their current target stack bounds" into nyc-dev
am: bc5446cba5

* commit 'bc5446cba502eeda3b4e0e81f512e673b6b55caa':
  Crop wallpaper windows to their current target stack bounds

Change-Id: Ia2b1dc04ff090666b88f06547af3a40c6df37d19