Merge "Wallpaper animation for keyguard unlocking." into udc-dev am:...

Merge "Wallpaper animation for keyguard unlocking." into udc-dev am: 6f0ed612 am: 6c4ed08d am: 73ccbccf

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22336604



Change-Id: I7e34d353b0f5e90fbe7a2751537c89825aad2702
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>