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: Iab419b8c11f1d8218a2c1593119f76d8f3d2f219