Make NodeList methods return NodeLists rather than List<Node>.

client/html/release/html.dart

 #library('html');
 
 #import('dart:dom', prefix:'dom');
 #import('dart:htmlimpl');
 // 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.
 
 // DO NOT EDIT
 // Auto-generated Dart HTML library.
@@ skipping 12510 matching lines @@
   // array.
   Node insertBefore(Node newChild, Node refChild);
 
   Node clone(bool deep);
 }
 // 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.
 
 interface NodeList extends List<Node> {
+  NodeList filter(bool f(Node element));
+
+  NodeList getRange(int start, int length);
+
   Node get first();
 }
 // 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.
 
 interface Notification extends EventTarget {
 
   String get dir();
 
@@ skipping 949 matching lines @@
   EventListenerList get abort();
   EventListenerList get error();
   EventListenerList get load();
   EventListenerList get loadStart();
   EventListenerList get progress();
 }
 
 interface XMLHttpRequestUpload extends EventTarget {
   XMLHttpRequestUploadEvents get on();
 }