DidPrepareForFolderUpdate 402 chrome/browser/sync_file_system/drive_backend/remote_to_local_syncer.cc Prepare(base::Bind(&RemoteToLocalSyncer::DidPrepareForFolderUpdate, DidPrepareForFolderUpdate 133 chrome/browser/sync_file_system/drive_backend/remote_to_local_syncer.h void DidPrepareForFolderUpdate(const SyncStatusCallback& callback,