Merge "Add framework controlled backlight transition animations" into...

Merge "Add framework controlled backlight transition animations" into udc-qpr-dev am: 7c186c49 am: 8afd95dd

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22966470



Change-Id: I8fcfd1805cff0832977ded429cf7ec0f98f04716
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>