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

Source/core/layout/shapes/RectangleShape.h

 /*
  * Copyright (C) 2012 Adobe Systems Incorporated. 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.
@@ skipping 29 matching lines @@
 
 class RectangleShape final : public Shape {
 public:
     RectangleShape(const FloatRect& bounds, const FloatSize& radii)
         : Shape()
         , m_bounds(bounds)
         , m_radii(radii)
     {
     }
 
-    virtual LayoutRect shapeMarginLogicalBoundingBox() const override { return static_cast<LayoutRect>(shapeMarginBounds()); }
-    virtual bool isEmpty() const override { return m_bounds.isEmpty(); }
-    virtual LineSegment getExcludedInterval(LayoutUnit logicalTop, LayoutUnit logicalHeight) const override;
-    virtual void buildDisplayPaths(DisplayPaths&) const override;
+    LayoutRect shapeMarginLogicalBoundingBox() const override { return static_cast<LayoutRect>(shapeMarginBounds()); }
+    bool isEmpty() const override { return m_bounds.isEmpty(); }
+    LineSegment getExcludedInterval(LayoutUnit logicalTop, LayoutUnit logicalHeight) const override;
+    void buildDisplayPaths(DisplayPaths&) const override;
 
 private:
     FloatRect shapeMarginBounds() const;
 
     float rx() const { return m_radii.width(); }
     float ry() const { return m_radii.height(); }
     float x() const { return m_bounds.x(); }
     float y() const { return m_bounds.y(); }
     float width() const { return m_bounds.width(); }
     float height() const { return m_bounds.height(); }
 
     FloatRect m_bounds;
     FloatSize m_radii;
 };
 
 } // namespace blink
 
 #endif // RectangleShape_h