RemoveAudioPrefObserver   37 chrome/browser/chromeos/audio/audio_devices_pref_handler_impl.h   virtual void RemoveAudioPrefObserver(AudioPrefObserver* observer) OVERRIDE;
RemoveAudioPrefObserver   46 chromeos/audio/audio_devices_pref_handler.h   virtual void RemoveAudioPrefObserver(AudioPrefObserver* observer) = 0;
RemoveAudioPrefObserver   34 chromeos/audio/audio_devices_pref_handler_stub.h   virtual void RemoveAudioPrefObserver(AudioPrefObserver* observer) OVERRIDE;
RemoveAudioPrefObserver  346 chromeos/audio/cras_audio_handler.cc     audio_pref_handler_->RemoveAudioPrefObserver(this);