Fixes to the html library matching vsm's changes to the generated code.

client/html/html.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.
 
 // DO NOT EDIT
 // Auto-generated Dart HTML library.
 
 #library('html');
 
 #import('dart:dom', prefix:'dom');
@@ skipping 236 matching lines @@
 #source('generated/src/interface/WebGLUniformLocation.dart');
 #source('generated/src/interface/WebGLVertexArrayObjectOES.dart');
 #source('generated/src/interface/XMLHttpRequestException.dart');
 
 #source('src/AbstractWorker.dart');
 #source('src/AnimationEvent.dart');
 #source('src/BeforeLoadEvent.dart');
 #source('src/BodyElement.dart');
 #source('src/CloseEvent.dart');
 #source('src/CompositionEvent.dart');
-#source('src/CssClassSet.dart');
 #source('src/CSSStyleDeclaration.dart');
 #source('src/CustomEvent.dart');
 #source('src/DeviceMotionEvent.dart');
 #source('src/DeviceOrientationEvent.dart');
 #source('src/Document.dart');
 #source('src/DocumentFragment.dart');
 #source('src/DOMApplicationCache.dart');
 #source('src/Element.dart');
 #source('src/ErrorEvent.dart');
 #source('src/Event.dart');
@@ skipping 23 matching lines @@
 #source('src/TouchEvent.dart');
 #source('src/TransitionEvent.dart');
 #source('src/UIEvent.dart');
 #source('src/WebSocket.dart');
 #source('src/WheelEvent.dart');
 #source('src/Window.dart');
 #source('src/Worker.dart');
 #source('src/XMLHttpRequest.dart');
 #source('src/XMLHttpRequestProgressEvent.dart');
 #source('src/XMLHttpRequestUpload.dart');