anchor.diff:        return;
       }
       buffer.write('<table>');
  -    _writeRow2(
  +    _writeRow(
           buffer,
           [
               'Start Time',
  
positive.code:   }
  
    void _returnFailure(HttpRequest request, String message) {
      HttpResponse response = request.response;
      response.statusCode = HttpStatus.OK;
      response.headers.contentType = _htmlContent;
      response.write('<html>');
      response.write('<head>');
      response.write('<title>Dart Analysis Server - Failure</title>');
      response.write('</head>');
      response.write('<body>');
      response.write(HTML_ESCAPE.convert(message));
      response.write('</body>');
      response.write('</html>');
      response.close();
    }
  
    void _returnOverlayContents(HttpRequest request) {
      String idString = request.requestedUri.queryParameters[ID_PARAM];
      int id = int.parse(idString);
      String contents = _overlayContents[id];
      HttpResponse response = request.response;
      response.statusCode = HttpStatus.OK;
      response.headers.contentType = _htmlContent;
      response.write('<html>');
      response.write('<head>');
      response.write('<title>Dart Analysis Server - Overlay</title>');
      response.write('</head>');
      response.write('<body>');
      response.write('<pre>${HTML_ESCAPE.convert(contents)}</pre>');
      response.write('</body>');
      response.write('</html>');
      response.close();
    }
  
    /**
  
negative.code:       if (len > 0) {
          var op = handler.priorityChangedPerformance.operations[len - 1];
          if (op != null) {
            _writeRow(buffer, ['&nbsp;', '&nbsp;', '&nbsp;']);
            String elapsed = op.elapsed != null ? op.elapsed.toString() : '???';
            _writeRow(buffer, [elapsed, '&nbsp;&nbsp;', op.name]);
          }
        }
      }
  