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

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

Change-Id: Idd6b46907d06672bdd5023e5459c35ae64731d0f