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

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



Change-Id: I0dea9cd5c040caef7be83633d993fc9a71c78f43
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>