Merge "Reduce unnecessary redraw of wallpaper when switching orientation" into...

Merge "Reduce unnecessary redraw of wallpaper when switching orientation" into udc-dev am: 72d126cd

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23444291



Change-Id: I65bf1769829742cff4196dde00ee5e058148f189
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>