Merge "[Bouncer] Remove flicker of message area." into tm-qpr-dev am: 33b7f00a

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/20498374



Change-Id: Ica058b5035fa83e7257129a80a4b666bafb47a34
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>