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: I7c89ed270179eec323a6b4b5e584603cee5b878b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>