Merge "Do not apply letterbox when entering PiP" into udc-dev am: cceba8e2...

Merge "Do not apply letterbox when entering PiP" into udc-dev am: cceba8e2 am: f382b873 am: 3e2be4ea

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23628060



Change-Id: Iac4f36af22f5dcf4b62164ab6cd217a292809cdd
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>