Merge "Add rounded corners to letterbox when taskbar is visible" into...

Merge "Add rounded corners to letterbox when taskbar is visible" into tm-qpr-dev am: 3d1c9948 am: 01974b59

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/20582006



Change-Id: Ia5f2ab9b86fb7158597c68e4fea5eaf0f54ff2b9
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>