TtsEventTypeToString  114 chrome/browser/speech/extension_api/tts_extension_api.cc   const char *event_type_string = TtsEventTypeToString(event_type);
TtsEventTypeToString  333 chrome/browser/speech/extension_api/tts_extension_api.cc       const char* event_name_constant = TtsEventTypeToString(*iter);
TtsEventTypeToString   18 chrome/browser/speech/extension_api/tts_extension_api.h const char *TtsEventTypeToString(TtsEventType event_type);