Merge "Avoid blur behind for layers that are fully opaque." into sc-dev am:...

Merge "Avoid blur behind for layers that are fully opaque." into sc-dev am: 9d799fbb am: ea2da71c am: 1fcb724c

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/14649087

Change-Id: I45be3c3e990e7c57e0c8a5cd29d09d0ec5384b93