Merge "Fix WallpaperManager javadoc for new U methods" into udc-dev am: 77a1d082 am: f698e39d am: 4c8d2764 am: fb3d447d

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



Change-Id: I0b0cd9ea45a841a3cb8e3aa9c2995feb5a44dd0e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>