Work-around Frog codegen bug where Window is derived from native DOMWindow.

client/dom/frog/frog_dom.dart

 #library('dom');
 
 #native('frog_dom.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.
 
 // DO NOT EDIT
 // Auto-generated Dart DOM library.
 
 
 
 // #source('src/_FactoryProviders.dart');
 
-// TODO(jmesserly): We need to be smarter about inheriting from a hidden native
-// type (in this case DOMWindow)
+// TODO(jmesserly): 'native' here is aWork-around for Frog bug.  Frog needs to
+// be smarter about inheriting from a hidden native type (in this case
+// DOMWindow)
 class Window extends DOMWindow native "*Window" {}
 DOMWindow get window() native "return window;";
 // TODO(vsm): Revert to Dart method when 508 is fixed.
 HTMLDocument get document() native "return window.document;";
 
 class AbstractWorker native "*AbstractWorker" {
 
   void addEventListener(String type, EventListener listener, [bool useCapture = null]) native;
 
   bool dispatchEvent(Event evt) native;
@@ skipping 802 matching lines @@
 class Comment extends CharacterData native "*Comment" {
 }
 
 class CompositionEvent extends UIEvent native "*CompositionEvent" {
 
   String data;
 
   void initCompositionEvent(String typeArg, bool canBubbleArg, bool cancelableArg, DOMWindow viewArg, String dataArg) native;
 }
 
-class Console native "=console" {
+class Console native "=(typeof console == 'undefined' ? {} : console)" {
 
   MemoryInfo memory;
 
   void assert(bool condition) native;
 
   void count() native;
 
   void debug(Object arg) native;
 
   void dir() native;
@@ skipping 2360 matching lines @@
 
   int vspace;
 
   String width;
 
   void start() native;
 
   void stop() native;
 }
 
-// TODO(jmesserly): this is marked as hidden until we figure out how to fix
-// DumpRenderTree on Mac.
-class HTMLMediaElement extends HTMLElement native "*HTMLMediaElement" {
+class HTMLMediaElement extends HTMLElement native "HTMLMediaElement" {
 
   static final int HAVE_CURRENT_DATA = 2;
 
   static final int HAVE_ENOUGH_DATA = 4;
 
   static final int HAVE_FUTURE_DATA = 3;
 
   static final int HAVE_METADATA = 1;
 
   static final int HAVE_NOTHING = 0;
@@ skipping 8115 matching lines @@
       startIndex = a.length - 1;
     }
     for (int i = startIndex; i >= 0; i--) {
       if (a[i] == element) {
         return i;
       }
     }
     return -1;
   }
 }