Update more core classes to use OVERRIDE / FINAL when needed

Source/core/rendering/RenderText.cpp

 /*
  * (C) 1999 Lars Knoll (knoll@kde.org)
  * (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Andrew Wellington (proton@wiretapped.net)
  * Copyright (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 48 matching lines @@
     String text;
     void* pointers[2];
 };
 
 COMPILE_ASSERT(sizeof(RenderText) == sizeof(SameSizeAsRenderText), RenderText_should_stay_small);
 
 class SecureTextTimer;
 typedef HashMap<RenderText*, SecureTextTimer*> SecureTextTimerMap;
 static SecureTextTimerMap* gSecureTextTimers = 0;
 
-class SecureTextTimer : public TimerBase {
+class SecureTextTimer FINAL : public TimerBase {
 public:
     SecureTextTimer(RenderText* renderText)
         : m_renderText(renderText)
         , m_lastTypedCharacterOffset(-1)
     {
     }
 
     void restartWithNewText(unsigned lastTypedCharacterOffset)
     {
         m_lastTypedCharacterOffset = lastTypedCharacterOffset;
         if (Settings* settings = m_renderText->document().settings())
             startOneShot(settings->passwordEchoDurationInSeconds());
     }
     void invalidate() { m_lastTypedCharacterOffset = -1; }
     unsigned lastTypedCharacterOffset() { return m_lastTypedCharacterOffset; }
 
 private:
-    virtual void fired()
+    virtual void fired() OVERRIDE
     {
         ASSERT(gSecureTextTimers->contains(m_renderText));
         m_renderText->setText(m_renderText->text().impl(), true /* forcing setting text as it may be masked later */);
     }
 
     RenderText* m_renderText;
     int m_lastTypedCharacterOffset;
 };
 
 static void makeCapitalized(String* string, UChar previous)
@@ skipping 1763 matching lines @@
     }
     secureTextTimer->restartWithNewText(lastTypedCharacterOffset);
 }
 
 PassRefPtr<AbstractInlineTextBox> RenderText::firstAbstractInlineTextBox()
 {
     return AbstractInlineTextBox::getOrCreate(this, m_firstTextBox);
 }
 
 } // namespace WebCore