Merge "Don't clip background drawable if navigation color view is not opaque"...

Merge "Don't clip background drawable if navigation color view is not opaque" into tm-dev am: b8ab50b6 am: 6ad6a41d

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18195528



Change-Id: I732355371a8c6e52313e4b535f5f07cca766cce5
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>