Merge "Merge "Remove lingering content overlays in onTaskVanished" into tm-dev...

Merge "Merge "Remove lingering content overlays in onTaskVanished" into tm-dev am: 442dbd14 am: 8debce0d" into tm-d1-dev-plus-aosp am: d63e7ced

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18604863



Change-Id: I00a1a60aa4d0d07f9675a1fa20546bba3a4d93d9
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>