Tweak dartdoc look to match dartlang.org a bit more.

utils/apidoc/apidoc.dart

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 /**
  * Generates the complete set of corelib reference documentation.
  */
 #library('apidoc');
 
 #import('html_diff.dart');
 #import('../../frog/lang.dart');
 #import('../../frog/file_system_node.dart');
 #import('../../frog/file_system.dart');
 #import('../dartdoc/dartdoc.dart', prefix: 'doc');
 
 HtmlDiff _diff;
 
 void main() {
   var files = new NodeFileSystem();
   parseOptions('../../frog', [] /* args */, files);
   initializeWorld(files);
   final apidoc = new Apidoc();
+  apidoc.mainTitle = 'Dart API Reference';
+
   HtmlDiff.initialize();
 
   _diff = new HtmlDiff();
   _diff.run();
   world.reset();
 
   apidoc.document('html');
 }
 
 class Apidoc extends doc.Dartdoc {
@@ skipping 91 matching lines @@
       "library._";
   } else if (_diff.htmlTypesToDom.containsKey(type)) {
     var domTypes = doc.joinWithCommas(
         map(_diff.htmlTypesToDom[type], _linkType));
     return "_This corresponds to $domTypes in the [dart:dom](../dom.html) " +
       "library._";
   } else {
     return "";
   }
 }