anchor.diff:                    onChanged: (bool value) { onShowPerformanceOverlayChanged(!showPerformanceOverlay); }
                   )
                 ]
  +            )
  +          ),
  +          new DrawerItem(
  +            icon: new Icon(Icons.report),
  +            child: new RichText(
  +              text: new TextSpan(
  +                children: <TextSpan>[
  +                  new LinkTextSpan(
  +                    text: "File an issue",
  +                    style: linkStyle,
  +                    url: 'https://github.com/flutter/flutter/issues/new'
  +                  )
  +                ]
  +              )
               )
             ),
             new AboutDrawerItem(
  
positive.code:                         "animations, layouts, and more. Learn more about Flutter at "
                        ),
                        new LinkTextSpan(
                          style: aboutLinkStyle,
                          url: 'https://flutter.io'
                        ),
                        new TextSpan(
  
negative.code:   Widget build(BuildContext context) {
      final ThemeData themeData = Theme.of(context);
      final TextStyle aboutTextStyle = themeData.textTheme.body2;
      final TextStyle linkStyle = themeData.textTheme.body2.copyWith(color: themeData.accentColor);
  
      return new Drawer(
        child: new Block(
  