AddChangeObserver   63 chrome/browser/sync_file_system/drive_backend/drive_backend_sync_unittest.cc     local_sync_service_->AddChangeObserver(this);
AddChangeObserver   86 chrome/browser/sync_file_system/local/local_file_sync_service.h   void AddChangeObserver(Observer* observer);
AddChangeObserver  134 chrome/browser/sync_file_system/local/local_file_sync_service_unittest.cc     local_service_->AddChangeObserver(this);
AddChangeObserver  426 chrome/browser/sync_file_system/sync_file_system_service.cc   local_service_->AddChangeObserver(local_syncer.get());