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: f0b5cfce am: 6acbb67e am: cb4b7e83

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



Change-Id: I96b62c4f78010ce84301dd0e1c7f31e5c8c54641
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>