Merge "Merge "Only call saveLayerAlpha when alpha is not at max or min values" into udc-dev am: 653c1079 am: bdfb7ffa" into udc-d1-dev-plus-aosp am: c4d0310d

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



Change-Id: Ie8416709cfb5535668475499c3b803eed6a0be03
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>