Merge "Fix overdraw lint warnings in letterbox dialog" into tm-qpr-dev am: c7355639

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/21612779



Change-Id: I4fbde6105ebfdea9d3cdd225ffbce7699d007d90
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>