Merge "Only call saveLayerAlpha when alpha is not at max or min values" into...

Merge "Only call saveLayerAlpha when alpha is not at max or min values" into udc-dev am: 653c1079 am: bdfb7ffa am: 6f56d3f0 am: f051c299

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23261577



Change-Id: I139a75ecf768191acab6041ab125586190d0ecff
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>