Merge "Make getAliveUsers() and getUsers() as @TestApi." into udc-dev am:...

Merge "Make getAliveUsers() and getUsers() as @TestApi." into udc-dev am: 7c8d60cd am: 5c879d9c am: 75ad6268 am: 3650d3f2

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22995969



Change-Id: I71c4c1b814b4e2683966e91fd1b2e39899191dfa
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>