Merge "Add comments stating the configs for visible background users are not...

Merge "Add comments stating the configs for visible background users are not ready for production" into udc-dev am: 5191e0d7

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/24140525



Change-Id: Ie6b98cdb5c3d7ae9e522826f2a85dc91e5a77d6f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>