Merge "Invoke redraw callback for wallpaper if size is changed" into udc-dev...

Merge "Invoke redraw callback for wallpaper if size is changed" into udc-dev am: 25aa2d3c am: bed60a72 am: ef27c0a5

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23444857



Change-Id: I84ff345b39c2bc60a931570380d792c357f76b82
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>