Merge "Hide fullscreen button in partial only mode" into udc-dev am: edbdb977 am: 8facd027

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23087459



Change-Id: I09d63021b61d3b21cf5a78defbef7c67095f5b72
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>