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: I6ef2e5a7409901121baf50a2f54d7cb26d25460a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>