Merge "Report pending change to wallpaper when being visible" into tm-qpr-dev...

Merge "Report pending change to wallpaper when being visible" into tm-qpr-dev am: 1abdd8af am: 002280fe am: 4baf2b81 am: 5f9baf62

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



Change-Id: I5f332271f2a950bc53099f073fc8a75b38ff164c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>