DidEnsureOriginRoot 1471 chrome/browser/sync_file_system/drive_backend_v1/drive_file_sync_service.cc base::Bind(&DriveFileSyncService::DidEnsureOriginRoot, DidEnsureOriginRoot 337 chrome/browser/sync_file_system/drive_backend_v1/drive_file_sync_service.h void DidEnsureOriginRoot(const GURL& origin,