Merge "DO NOT MERGE Disallow Wallpaper service to launch activity from...

Merge "DO NOT MERGE Disallow Wallpaper service to launch activity from background." into rvc-dev am: 9c2ddfc6

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/24077613



Change-Id: Iaa0d5ee487a4929103679e832b7b5c7ec454cb50
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>