Add a mode to dartdoc to generate the navigation on the client.

utils/dartdoc/classify.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.
 
+#library('classify');
+
+#import('../../frog/lang.dart');
+#import('markdown.dart', prefix: 'md');
+
 /**
  * Kinds of tokens that we care to highlight differently. The values of the
  * fields here will be used as CSS class names for the generated spans.
  */
 class Classification {
   static final NONE = null;
   static final ERROR = "e";
   static final COMMENT = "c";
   static final IDENTIFIER = "i";
   static final KEYWORD = "k";
@@ skipping 220 matching lines @@
       return Classification.KEYWORD;
 
     case TokenKind.WHITESPACE:
     case TokenKind.END_OF_FILE:
       return Classification.NONE;
 
     default:
       return Classification.NONE;
   }
 }