Remove GarbageCollected support from the bindings

sky/engine/core/frame/Window.idl

 /*
  * Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 14 matching lines @@
  */
 
 // HTML 5 draft spec:
 // http://www.w3.org/html/wg/drafts/html/master/browsers.html#window
 // FIXME: explain all uses of [DoNotCheckSecurity]
 [
     CheckSecurity=Frame,
     Custom=ToV8,
     ImplementedAs=LocalDOMWindow,
     PrimaryGlobal,
-    WillBeGarbageCollected,
 ] interface Window : EventTarget {
     readonly attribute Screen screen;
     readonly attribute History history;
     [DoNotCheckSecurity, Unforgeable, Replaceable, PutForwards=href] readonly attribute Location location;
     [Custom, MeasureAs=WindowEvent, NotEnumerable] attribute Event event;
 
     Selection getSelection();
 
     [DoNotCheckSecurity, CallWith=ExecutionContext] void focus();
 
@@ skipping 56 matching lines @@
 
     // window.toString() requires special handling in V8
     [DoNotCheckSignature, DoNotCheckSecurity, Custom, NotEnumerable] stringifier;
 
     // FIXME(sky): can't remove w/o also removing hacks in bindings generator.
     [Custom, NotEnumerable] getter Window (DOMString name);
 };
 
 Window implements WindowBase64;
 Window implements WindowTimers;