Merge "Ensure PiP window visible after fold/unfold device" into tm-qpr-dev am: 1a51c351

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/19572042



Change-Id: I220cd4306a97e2d49be6f39a56d7f26a47416a2b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>