Merge "Add Bluetooth headset API to allow disabling audio route." into cw-e-dev am: cb8749c903 am: 0fa22022a3 am: e2861471b9 am: 52d93db91d
am: 17ffebf8c8

* commit '17ffebf8c802ccc5ee6db36aad88e560297d6c33':
  Add Bluetooth headset API to allow disabling audio route.