Implement a part of ProcessingInstruction by using PrivateScript

Source/core/frame/LocalDOMWindow.h

 /*
  * Copyright (C) 2006, 2007, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  *
  * 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 312 matching lines @@
     void dispatchWindowLoadEvent();
     void documentWasClosed();
     void statePopped(PassRefPtr<SerializedScriptValue>);
 
     // FIXME: This shouldn't be public once LocalDOMWindow becomes ExecutionContext.
     void clearEventQueue();
 
     void acceptLanguagesChanged();
 
     virtual void trace(Visitor*) OVERRIDE;
+    void replaceDocument(String documentSource, String contentType, String encodingName);
 
 protected:
     DOMWindowLifecycleNotifier& lifecycleNotifier();
 
 private:
     explicit LocalDOMWindow(LocalFrame&);
 
     Page* page();
 
     virtual void frameDestroyed() OVERRIDE;
@@ skipping 60 matching lines @@
 }
 
 inline String LocalDOMWindow::defaultStatus() const
 {
     return m_defaultStatus;
 }
 
 } // namespace blink
 
 #endif // LocalDOMWindow_h