Fix virtual/override/final usage in Source/core/dom/.

Source/core/dom/Text.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  *
  * 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
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 38 matching lines @@
     // DOM Level 3: http://www.w3.org/TR/DOM-Level-3-Core/core.html#ID-1312295772
 
     String wholeText() const;
     PassRefPtrWillBeRawPtr<Text> replaceWholeText(const String&);
 
     void recalcTextStyle(StyleRecalcChange, Text* nextTextSibling);
     bool textLayoutObjectIsNeeded(const ComputedStyle&, const LayoutObject& parent);
     LayoutText* createTextLayoutObject(const ComputedStyle&);
     void updateTextLayoutObject(unsigned offsetOfReplacedData, unsigned lengthOfReplacedData, RecalcStyleBehavior = DoNotRecalcStyle);
 
-    virtual void attach(const AttachContext& = AttachContext()) override final;
+    void attach(const AttachContext& = AttachContext()) final;
     void reattachIfNeeded(const AttachContext& = AttachContext());
 
-    virtual bool canContainRangeEndPoint() const override final { return true; }
-    virtual NodeType nodeType() const override;
+    bool canContainRangeEndPoint() const final { return true; }
+    NodeType nodeType() const override;
 
     DECLARE_VIRTUAL_TRACE();
 
 protected:
     Text(TreeScope& treeScope, const String& data, ConstructionType type)
         : CharacterData(treeScope, data, type) { }
 
 private:
-    virtual String nodeName() const override;
-    virtual PassRefPtrWillBeRawPtr<Node> cloneNode(bool deep = true) override final;
+    String nodeName() const override;
+    PassRefPtrWillBeRawPtr<Node> cloneNode(bool deep = true) final;
 
     bool isTextNode() const = delete; // This will catch anyone doing an unnecessary check.
 
     bool needsWhitespaceLayoutObject();
 
     virtual PassRefPtrWillBeRawPtr<Text> cloneWithData(const String&);
 
 #ifndef NDEBUG
-    virtual void formatForDebugger(char* buffer, unsigned length) const override;
+    void formatForDebugger(char* buffer, unsigned length) const override;
 #endif
 };
 
 DEFINE_NODE_TYPE_CASTS(Text, isTextNode());
 
 } // namespace blink
 
 #endif // Text_h