Merge "[Output Switcher] Handle muting expected device" into tm-dev am:...

Merge "[Output Switcher] Handle muting expected device" into tm-dev am: 1ad92562 am: 1a4e9421 am: d0bba7b9 am: a0197d1e

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18610067



Change-Id: Iec0babf27fc29ad9445ae85151e6055d76f2c705
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>