Refresh dom_frog.

client/dom/generated/src/wrapping/_DocumentWrappingImplementation.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.
 
 // WARNING: Do not edit - generated code.
 
 class _DocumentWrappingImplementation extends _NodeWrappingImplementation implements Document {
   _DocumentWrappingImplementation() : super() {}
 
   static create__DocumentWrappingImplementation() native {
@@ skipping 246 matching lines @@
   XPathResult evaluate(String expression, Node contextNode, XPathNSResolver resolver, int type, XPathResult inResult) {
     return _evaluate(this, expression, contextNode, resolver, type, inResult);
   }
   static XPathResult _evaluate(receiver, expression, contextNode, resolver, type, inResult) native;
 
   bool execCommand(String command, bool userInterface, String value) {
     return _execCommand(this, command, userInterface, value);
   }
   static bool _execCommand(receiver, command, userInterface, value) native;
 
-  Object getCSSCanvasContext(String contextId, String name, int width, int height) {
+  CanvasRenderingContext getCSSCanvasContext(String contextId, String name, int width, int height) {
     return _getCSSCanvasContext(this, contextId, name, width, height);
   }
-  static Object _getCSSCanvasContext(receiver, contextId, name, width, height) native;
+  static CanvasRenderingContext _getCSSCanvasContext(receiver, contextId, name, width, height) native;
 
   Element getElementById(String elementId) {
     return _getElementById(this, elementId);
   }
   static Element _getElementById(receiver, elementId) native;
 
   NodeList getElementsByClassName(String tagname) {
     return _getElementsByClassName(this, tagname);
   }
   static NodeList _getElementsByClassName(receiver, tagname) native;
@@ skipping 74 matching lines @@
   }
   static void _webkitCancelFullScreen(receiver) native;
 
   WebKitNamedFlow webkitGetFlowByName(String name) {
     return _webkitGetFlowByName(this, name);
   }
   static WebKitNamedFlow _webkitGetFlowByName(receiver, name) native;
 
   String get typeName() { return "Document"; }
 }