Merge changes from topics "presubmit-am-7ed5c317d7b347f1a59eb332f20e8522",...

Merge changes from topics "presubmit-am-7ed5c317d7b347f1a59eb332f20e8522", "presubmit-am-86ce18b053454a4db98a349f8b39985e", "presubmit-am-94d3142a4e1c418fadfd6eca6208920a", "presubmit-am-a466ed1382304d549cb550a5cae804e6" into tm-dev

* changes:
  Add Absolute Volume Control support for a TV as the System Audio device
  Implement support for Absolute Volume Control
  Add call to onBootPhase to tests that use HdmiControlService
  Add wrapper for AudioDeviceVolumeManager in the HDMI framework