DispatchVolumeChangedEvent   58 chrome/browser/extensions/api/system_private/system_private_api.h void DispatchVolumeChangedEvent(double volume, bool is_volume_muted);
DispatchVolumeChangedEvent  100 chrome/browser/ui/ash/volume_controller_chromeos.cc   extensions::DispatchVolumeChangedEvent(
DispatchVolumeChangedEvent  107 chrome/browser/ui/ash/volume_controller_chromeos.cc   extensions::DispatchVolumeChangedEvent(