Merge "Merge "Add reference to permissions in UserRestriction docs." into udc-dev am: 40d4e1b6 am: cac9c217" into udc-qpr-dev am: 5b7c32b4

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22574004



Change-Id: I69a448e4802cb106187fa6a36d823dcd4542ce06
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>