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

Source/core/layout/LayoutTextFragment.h

 /*
  * (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.
  *
  * 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 19 matching lines @@
 class FirstLetterPseudoElement;
 
 // Used to represent a text substring of an element, e.g., for text runs that are split because of
 // first letter and that must therefore have different styles (and positions in the layout tree).
 // We cache offsets so that text transformations can be applied in such a way that we can recover
 // the original unaltered string from our corresponding DOM node.
 class LayoutTextFragment final : public LayoutText {
 public:
     LayoutTextFragment(Node*, StringImpl*, int startOffset, int length);
     LayoutTextFragment(Node*, StringImpl*);
-    virtual ~LayoutTextFragment();
+    ~LayoutTextFragment() override;
 
-    virtual bool isTextFragment() const override { return true; }
+    bool isTextFragment() const override { return true; }
 
-    virtual bool canBeSelectionLeaf() const override { return node() && node()->hasEditableStyle(); }
+    bool canBeSelectionLeaf() const override { return node() && node()->hasEditableStyle(); }
 
     unsigned start() const { return m_start; }
     unsigned end() const { return m_end; }
 
-    virtual unsigned textStartOffset() const override { return start(); }
+    unsigned textStartOffset() const override { return start(); }
 
     void setContentString(StringImpl*);
     StringImpl* contentString() const { return m_contentString.get(); }
     // The complete text is all of the text in the associated DOM text node.
     PassRefPtr<StringImpl> completeText() const;
     // The fragment text is the text which will be used by this LayoutTextFragment. For
     // things like first-letter this may differ from the completeText as we maybe using
     // only a portion of the text nodes content.
 
-    virtual PassRefPtr<StringImpl> originalText() const override;
+    PassRefPtr<StringImpl> originalText() const override;
 
-    virtual void setText(PassRefPtr<StringImpl>, bool force = false) override;
+    void setText(PassRefPtr<StringImpl>, bool force = false) override;
     void setTextFragment(PassRefPtr<StringImpl>, unsigned start, unsigned length);
 
-    virtual void transformText() override;
+    void transformText() override;
 
     // FIXME: Rename to LayoutTextFragment
-    virtual const char* name() const override { return "LayoutTextFragment"; }
+    const char* name() const override { return "LayoutTextFragment"; }
 
     void setFirstLetterPseudoElement(FirstLetterPseudoElement* element) { m_firstLetterPseudoElement = element; }
     FirstLetterPseudoElement* firstLetterPseudoElement() const { return m_firstLetterPseudoElement; }
 
     void setIsRemainingTextLayoutObject(bool isRemainingText) { m_isRemainingTextLayoutObject = isRemainingText; }
     bool isRemainingTextLayoutObject() const { return m_isRemainingTextLayoutObject; }
 
 protected:
-    virtual void willBeDestroyed() override;
+    void willBeDestroyed() override;
 
 private:
     LayoutBlock* blockForAccompanyingFirstLetter() const;
-    virtual UChar previousCharacter() const override;
+    UChar previousCharacter() const override;
 
     Text* associatedTextNode() const;
     void updateHitTestResult(HitTestResult&, const LayoutPoint&) override;
 
     unsigned m_start;
     unsigned m_end;
     bool m_isRemainingTextLayoutObject;
     RefPtr<StringImpl> m_contentString;
     // Reference back to FirstLetterPseudoElement; cleared by FirstLetterPseudoElement::detach() if
     // it goes away first.
     FirstLetterPseudoElement* m_firstLetterPseudoElement;
 };
 
 DEFINE_TYPE_CASTS(LayoutTextFragment, LayoutObject, object, toLayoutText(object)->isTextFragment(), toLayoutText(object).isTextFragment());
 
 } // namespace blink
 
 #endif // LayoutTextFragment_h