AddSyncEventObserver   49 chrome/browser/extensions/api/sync_file_system/extension_sync_event_observer.cc   sync_service_->AddSyncEventObserver(this);
AddSyncEventObserver   71 chrome/browser/sync_file_system/sync_file_system_service.h   void AddSyncEventObserver(SyncEventObserver* observer);
AddSyncEventObserver  205 chrome/browser/sync_file_system/sync_file_system_service_unittest.cc     sync_service_->AddSyncEventObserver(&event_observer);
AddSyncEventObserver   34 chrome/browser/ui/webui/sync_file_system_internals/sync_file_system_internals_handler.cc     sync_service->AddSyncEventObserver(this);