Merge "Include the wallpaper visibility change in the existing keyguard...

Merge "Include the wallpaper visibility change in the existing keyguard unlocking transition" into udc-dev am: dc80918e am: 47e1b24e am: b4c982b5

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22336603



Change-Id: Ieb6158051864b7193d55248d538eb8d5c1682813
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>