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

Source/core/layout/LayoutFrameSet.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Simon Hausmann <hausmann@kde.org>
  * Copyright (C) 2006, 2008 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 @@
     void setAllowBorder(FrameEdge edge, bool allowBorder) { m_allowBorder[edge] = allowBorder; }
 
 private:
     Vector<bool> m_preventResize;
     Vector<bool> m_allowBorder;
 };
 
 class LayoutFrameSet final : public LayoutBox {
 public:
     LayoutFrameSet(HTMLFrameSetElement*);
-    virtual ~LayoutFrameSet();
+    ~LayoutFrameSet() override;
 
     LayoutObject* firstChild() const { ASSERT(children() == virtualChildren()); return children()->firstChild(); }
     LayoutObject* lastChild() const { ASSERT(children() == virtualChildren()); return children()->lastChild(); }
 
     // If you have a LayoutFrameSet, use firstChild or lastChild instead.
     void slowFirstChild() const = delete;
     void slowLastChild() const = delete;
 
     const LayoutObjectChildList* children() const { return &m_children; }
     LayoutObjectChildList* children() { return &m_children; }
@@ skipping 18 matching lines @@
         Vector<int> m_deltas;
         Vector<bool> m_preventResize;
         Vector<bool> m_allowBorder;
         int m_splitBeingResized;
         int m_splitResizeOffset;
     };
 
     const GridAxis& rows() { return m_rows; }
     const GridAxis& columns() { return m_cols; }
 
-    virtual const char* name() const override { return "LayoutFrameSet"; }
+    const char* name() const override { return "LayoutFrameSet"; }
 
 private:
     static const int noSplit = -1;
 
-    virtual LayoutObjectChildList* virtualChildren() override { return children(); }
-    virtual const LayoutObjectChildList* virtualChildren() const override { return children(); }
+    LayoutObjectChildList* virtualChildren() override { return children(); }
+    const LayoutObjectChildList* virtualChildren() const override { return children(); }
 
-    virtual bool isOfType(LayoutObjectType type) const override { return type == LayoutObjectFrameSet || LayoutBox::isOfType(type); }
+    bool isOfType(LayoutObjectType type) const override { return type == LayoutObjectFrameSet || LayoutBox::isOfType(type); }
 
-    virtual void layout() override;
-    virtual void paint(const PaintInfo&, const LayoutPoint&) override;
-    virtual void computePreferredLogicalWidths() override;
-    virtual bool isChildAllowed(LayoutObject*, const ComputedStyle&) const override;
-    virtual CursorDirective getCursor(const LayoutPoint&, Cursor&) const override;
+    void layout() override;
+    void paint(const PaintInfo&, const LayoutPoint&) override;
+    void computePreferredLogicalWidths() override;
+    bool isChildAllowed(LayoutObject*, const ComputedStyle&) const override;
+    CursorDirective getCursor(const LayoutPoint&, Cursor&) const override;
 
     void setIsResizing(bool);
 
     void layOutAxis(GridAxis&, const Vector<HTMLDimension>&, int availableSpace);
     void computeEdgeInfo();
     void fillFromEdgeInfo(const FrameEdgeInfo&, int r, int c);
     void positionFrames();
 
     int splitPosition(const GridAxis&, int split) const;
     int hitTestSplit(const GridAxis&, int position) const;
 
     void startResizing(GridAxis&, int position);
     void continueResizing(GridAxis&, int position);
 
     LayoutObjectChildList m_children;
 
     GridAxis m_rows;
     GridAxis m_cols;
 
     bool m_isResizing;
     bool m_isChildResizing;
 };
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutFrameSet, isFrameSet());
 
 } // namespace blink
 
 #endif // LayoutFrameSet_h