Merge "Merge "Prevent apps from creating blocked channel groups" into rvc-dev...

Merge "Merge "Prevent apps from creating blocked channel groups" into rvc-dev am: fc064397 am: 5f9f8f23" into sc-dev am: 6f4654c6 am: a9e73ff7

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/16624024

Change-Id: I1a5c4d0634bd654602345e5f2863ad4e293d7ec7