void OnStatusChanged(appcache::Status);
void OnEventRaised(appcache::EventID);
void OnProgressEventRaised(const GURL& url, int num_total, int num_complete);
void OnStatusChanged(appcache::Status);
void OnEventRaised(appcache::EventID);
void OnProgressEventRaised(const GURL& url, int num_total, int num_complete);