Merge "Fix WallpaperManager javadoc for new U methods" into udc-dev am: 77a1d082 am: f698e39d am: 295822e0 am: 484bb69f

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23591860



Change-Id: Ie915172a1e25d8dc524fdff18024e4eb1069c962
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>