AudioServiceImpl    9 chrome/browser/extensions/api/audio/audio_service.cc class AudioServiceImpl : public AudioService {
AudioServiceImpl   24 chrome/browser/extensions/api/audio/audio_service_chromeos.cc class AudioServiceImpl : public AudioService,
AudioServiceImpl   95 chrome/browser/extensions/api/audio/audio_service_chromeos.cc AudioServiceImpl::~AudioServiceImpl() {