Merge "[automerger skipped] Merge "Added new constructor to AudioGroup." am: 3f75a84507 am: 1778e161d9 am: b5cf529724 -s ours am skip reason: change_id Ic7ca45d5fab27469a3cc8654cd05a10bd55f7e87 with SHA1 d5a71c7bac is in history"