Merge "Execute flicker tests with device without wallpaper" into tm-dev am:...

Merge "Execute flicker tests with device without wallpaper" into tm-dev am: 759d7606 am: 371b3d1b

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17745135



Change-Id: If3c826e4eb796be7b672c5f73fef3710b14c9f68
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>