Merge "Report pending change to wallpaper when being visible" into tm-qpr-dev am: 1abdd8afcc

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/21920183

Change-Id: I1a0e2a80a1c08b17bb97124024cb995b6cb1970c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>