Merge "Reparent PiP overlay under task as soon as possible" into udc-dev am:...

Merge "Reparent PiP overlay under task as soon as possible" into udc-dev am: ccafc6b3 am: bb002d15

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23732847



Change-Id: Ia9301f045ba97e52b338f047c4ce1079e98a6eca
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>