Merge "Reduce PiP flickering when switch apps with orientation change" into...

Merge "Reduce PiP flickering when switch apps with orientation change" into udc-dev am: 4b4b8d7b am: f4fdfa1c am: 196b738e am: 81d8d5b0

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23370657



Change-Id: Idbb5e8dbee43b0b263c901c57166af046eb2a03d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>