Merge "Wait for both window and layer to be visible and window to be pinned...

Merge "Wait for both window and layer to be visible and window to be pinned before considering the app in pip mode" into udc-dev am: 56216f26 am: b7fffb5e

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22764140



Change-Id: I08745325e8cf7fdf04716618b610f007fb109a0a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>