Merge "Reduce PiP flickering when switch apps with orientation change" into udc-dev am: 4b4b8d7b am: eb3d22a1 am: 91e9707f

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



Change-Id: I95768ed3974aee2617414bdc7a349ea52780f89b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>