Merge changes Ieefeb843,Ic2a94b09 into nyc-dev
am: 3fb1c81

* commit '3fb1c81394f98b025b488774916b7580f9e31dab':
  Update surface insets on window elevation changes.
  Fixed bug with cropping out drop shadow for pinned stack.

Change-Id: If788ed4af5292b76576c7abd728633f20cc6eb93