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: 9a0f8d00

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



Change-Id: I77b819595078103a70d0414b9d195349bbfe8e70
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>