Extract a DOMWindow interface from LocalDOMWindow and use it in the idl.

Source/bindings/core/v8/custom/V8HTMLDocumentCustom.cpp

 /*
  * Copyright (C) 2007, 2008, 2009 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 20 matching lines @@
 #include "config.h"
 #include "bindings/core/v8/V8HTMLDocument.h"
 
 #include "bindings/core/v8/ScriptController.h"
 #include "bindings/core/v8/V8Binding.h"
 #include "bindings/core/v8/V8HTMLAllCollection.h"
 #include "bindings/core/v8/V8HTMLCollection.h"
 #include "bindings/core/v8/V8Node.h"
 #include "bindings/core/v8/V8Window.h"
 #include "core/HTMLNames.h"
+#include "core/frame/LocalDOMWindow.h"
 #include "core/frame/LocalFrame.h"
 #include "core/html/HTMLAllCollection.h"
 #include "core/html/HTMLCollection.h"
 #include "core/html/HTMLDocument.h"
 #include "core/html/HTMLIFrameElement.h"
 #include "wtf/OwnPtr.h"
 #include "wtf/RefPtr.h"
 #include "wtf/StdLibExtras.h"
 
 namespace blink {
@@ skipping 34 matching lines @@
 
     ExceptionState exceptionState(ExceptionState::ExecutionContext, "open", "Document", info.Holder(), info.GetIsolate());
     htmlDocument->open(callingDOMWindow(info.GetIsolate())->document(), exceptionState);
     if (exceptionState.throwIfNeeded())
         return;
 
     v8SetReturnValue(info, info.Holder());
 }
 
 } // namespace blink