GetActiveOutputDeviceIconId   27 ash/system/audio/tray_audio_delegate.h   virtual int GetActiveOutputDeviceIconId() = 0;
GetActiveOutputDeviceIconId  212 ash/system/audio/volume_view.cc   int device_icon = audio_delegate_->GetActiveOutputDeviceIconId();
GetActiveOutputDeviceIconId   23 ash/system/chromeos/audio/tray_audio_delegate_chromeos.h   virtual int GetActiveOutputDeviceIconId() OVERRIDE;
GetActiveOutputDeviceIconId   27 ash/system/win/audio/tray_audio_delegate_win.h   virtual int GetActiveOutputDeviceIconId() OVERRIDE;