Merge "Set fullscreen mode to task at the end of exit-pip animation" into...

Merge "Set fullscreen mode to task at the end of exit-pip animation" into udc-dev am: 35f2750e am: be553a19 am: 58d5a2ff am: 5f303144

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22929277



Change-Id: Ia185b5aa790dc98684f2a2344283c2b884dcbc5a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>