Merge "Use UserManagerInternal to avoid permission check" into udc-dev am: ec8f8272 am: 7941177c am: b17d5e52 am: 04aa5cad

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23389256



Change-Id: I3c32bff30d40e3c67dc891fc6d278f2f21829c70
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>