Fixing mapping of attribute maps on FireFox.

sdk/lib/html/dart2js/html_dart2js.dart

 /// The Dart HTML library.
 ///
 /// For examples, see
 /// [Dart HTML5 Samples](https://github.com/dart-lang/dart-html5-samples)
 /// on Github.
 library dart.dom.html;
 
 import 'dart:async';
 import 'dart:collection';
 import 'dart:_collection-dev' hide Symbol, deprecated;
@@ skipping 25725 matching lines @@
 }
 // Copyright (c) 2012, 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.
 
 
 @DocsEditable()
 @DomName('NamedNodeMap')
 // http://dom.spec.whatwg.org/#namednodemap
 @deprecated // deprecated
-class _NamedNodeMap extends Interceptor with ListMixin<Node>, ImmutableListMixin<Node> implements JavaScriptIndexingBehavior, List<Node> native "NamedNodeMap" {
+class _NamedNodeMap extends Interceptor with ListMixin<Node>, ImmutableListMixin<Node> implements JavaScriptIndexingBehavior, List<Node> native "NamedNodeMap,MozNamedAttrMap" {
 
   @DomName('NamedNodeMap.length')
   @DocsEditable()
   int get length => JS("int", "#.length", this);
 
   Node operator[](int index) {
     if (JS("bool", "# >>> 0 !== # || # >= #", index,
         index, index, length))
       throw new RangeError.range(index, 0, length);
     return JS("Node", "#[#]", this, index);
@@ skipping 3680 matching lines @@
       _position = nextPosition;
       return true;
     }
     _current = null;
     _position = _array.length;
     return false;
   }
 
   T get current => _current;
 }