[automerger skipped] Merge "DO NOT MERGE Prevent apps from creating blocked channel groups" into qt-dev am: f1dc5b1ee1 am: 960d42c069 -s ours am: 2675838e1b -s ours am: 09a1321d8d -s ours

am skip reason: subject contains skip directive

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/16621952

Change-Id: I0490ee1542c7005e20f8cf35a02223902c9cdb2f