Merge "Move to non-hidden APIs for handleUser and broadcast registration."...

Merge "Move to non-hidden APIs for handleUser and broadcast registration." into sc-dev am: 6756cce8 am: 27520d23 am: 471d7317

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/14669986

Change-Id: I049059c39cbee39ff6cd985d5b20c1497a3b0e0b