Cleanup old code and refresh on IDL

client/dom/scripts/template_wrapping_dom_externs.js

 // 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.
 
 // WARNING: Do not edit - generated code.
 
 /**
  * @fileoverview Dart externs for DOM runtime.
  * @externs
  */
@@ skipping 13 matching lines @@
 // Externs missing from JavaScript back-end.
 Window.prototype.webkitRequestAnimationFrame;
 Window.prototype.webkitCancelRequestAnimationFrame;
 Window.prototype.webkitConvertPointFromPageToNode;
 Window.prototype.webkitConvertPointFromNodeToPage;
 
 // Externs for DOM objects.
 var $NAMESPACE = function(){};
 
 $!PROPS
-// Externs referenced in custom attributes or custom operations.
-$NAMESPACE.prototype.createXMLHttpRequest;
-$NAMESPACE.prototype.createWebKitCSSMatrix;
-$NAMESPACE.prototype.createWebKitPoint;
-$NAMESPACE.prototype.createFileReader;
-$NAMESPACE.prototype.setFillStyle;
-$NAMESPACE.prototype.setStrokeStyle;
 
 }