Devirtualize PageConsole and MHTMLArchive destructors

Source/core/page/PageConsole.h

 /*
  * Copyright (C) 2013 Apple 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 24 matching lines @@
 #include "wtf/Forward.h"
 #include "wtf/PassOwnPtr.h"
 
 namespace WebCore {
 
 class Page;
 
 class PageConsole {
 public:
     static PassOwnPtr<PageConsole> create(Page* page) { return adoptPtr(new PageConsole(page)); }
-    virtual ~PageConsole();
 
     void addMessage(MessageSource, MessageLevel, const String& message);
     void addMessage(MessageSource, MessageLevel, const String& message, const String& sourceURL, unsigned lineNumber, unsigned columnNumber = 0, PassRefPtr<ScriptCallStack> = 0, ScriptState* = 0, unsigned long requestIdentifier = 0);
     void addMessage(MessageSource, MessageLevel, const String& message, PassRefPtr<ScriptCallStack>);
     static String formatStackTraceString(const String& originalMessage, PassRefPtr<ScriptCallStack>);
 
     static void mute();
     static void unmute();
 
 private:
     explicit PageConsole(Page*);
 
     Page* m_page;
 };
 
 } // namespace WebCore
 
 #endif // PageConsole_h