Merge "Merge "Support "Mute" and "Restore Volume" CEC commands" into sc-dev...

Merge "Merge "Support "Mute" and "Restore Volume" CEC commands" into sc-dev am: a391ee7e am: 29b3294e" into sc-v2-dev-plus-aosp am: 78471518

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15012797

Change-Id: I16d1a794f2bc2efcdd523c40bbae4b444cdfcd1b