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

Merge "Fix overdraw lint warnings in letterbox dialog" into tm-qpr-dev am: c7355639 am: 98cc6ca0 am: 1797edb8

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



Change-Id: I73e0123e965ee8f19d8f38a5e0a238c8bb5cc52f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>