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

* commit '52d93db91dcf883f236c7b1e75d1dd4b2421a1d3':
  Add Bluetooth headset API to allow disabling audio route.