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

Merge "Remove lingering content overlays in onTaskVanished" into tm-dev am: 442dbd14 am: 7f2efe4b

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



Change-Id: I9659535fb5616c2e5f01fb15ab8f5cd5b4d8bf4c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>