Merge "Make sure system bars have visible background while force-showing" into...

Merge "Make sure system bars have visible background while force-showing" into tm-qpr-dev am: b11f679d

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/19193687



Change-Id: Icbf6a52c98e8f0f6245594daee7f0502698d46f2
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>