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 am: 1ec01cdd

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



Change-Id: Ica8c07b806127867edc30a65b33df1b15db043e3
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>