Merge changes Ia8a90434,I35f484c7,I2e87e764 into nyc-dev
am: dddfff3

* commit 'dddfff3cddf8c12aba0335eb853f177abb0a68b0':
  Tweaks to make overview animations to match spec.
  Closing system windows when dismissing recents to app or home.
  Caching the display rect to reduce binder calls.

Change-Id: I62e383c2b2f6b029049e02f3a80b298833e664ea