Merge "Add FEATURE_REMOTE_GROUP_PLAYBACK" into rvc-dev am: c0fcd758 am:...

Merge "Add FEATURE_REMOTE_GROUP_PLAYBACK" into rvc-dev am: c0fcd758 am: be48f159 am: 0d1eeaad am: 9e43adeb

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/12043613

Change-Id: Iec331368f55cb9e9b02d5a4e42a7437e504f23c7