Merge "Add restore logging to WallpaperBackupAgent" into udc-dev am: a674bc92 am: a8e8c5fe

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22762142



Change-Id: I40a6097ab03f3a0434d5fafb4e67c49cb525b4ce
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>