+ // We force the main-thread parser for about:blank and javascript:
+ // (which uses about:blank urls) and data: urls for compatibility
+ // with historical synchronous loading/parsing behavior.
+ // FIXME: Gecko does not load javascript: urls synchronously, why do we?
+ // See LayoutTests/loader/iframe-sync-loads.html
+ // FIXME: threadedHTMLParser() setting should be removed but currently many
+ // webkit_unit_tests depend on parsing being synchronous. crbug.com/366354
+ // FIXME: useThreadedHTMLParserForDataURLs() setting should be removed but
+ // currently many browser_tests depend on data: urls being synchronous! crbug.com/308321