Merge "Fix WallpaperManager javadoc for new U methods" into udc-dev am: 77a1d082 am: 21f95fc9 am: ecfefd61 am: 07540de3

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



Change-Id: I6408525ac958c9934483ec5d932efc9100856ea1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>