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

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



Change-Id: Iad265380804d93239a5e8fbeee2554a271dcf0f4
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>