[automerger skipped] Merge "[Output Switcher] Enable Volume control for single cast device" into tm-dev am: 840f212c am: ce6cb5eb -s ours

am skip reason: Merged-In Iff4df4e9ea65e99f8095e877bacab0469c05a377 with SHA-1 45fc96a5 is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17035624

Change-Id: I8e2d66178b84a8dfcafa5bb62ace108325e91c53