[automerger skipped] DO NOT MERGE Disallow Wallpaper service to launch activity from background. am: 8efec2c095 am: 1b7d87139c am: 82baf6404d -s ours

am skip reason: subject contains skip directive

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23912846

Change-Id: I216a2f8de0a7381a4dc2e7f138ce18f6e5916834
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>