Merge "Cancel the wallpaper animation after the tests" into udc-dev am: 3b928069

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23154360



Change-Id: I7303ab85e4d313914ba1e0222652d7ea4745b2e1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>