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

Merge "DO NOT MERGE Disallow Wallpaper service to launch activity from background." into sc-dev am: 641f8674

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/24081613



Change-Id: Ic78a7acc12f81c9fd73d557eb23b1468fdcea23d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>