Merge "Slightly more realistic shade transitions" into udc-qpr-dev am: bdaad74d

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/24437007



Change-Id: I6b027c2ecf1ad8fa561aa7d2a7e9ce4e71c70b5e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>