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

Source/core/layout/shapes/RectangleShape.h

Index: Source/core/layout/shapes/RectangleShape.h
diff --git a/Source/core/layout/shapes/RectangleShape.h b/Source/core/layout/shapes/RectangleShape.h
index 4192642d33ce6418788303983f6750b9ba361e19..a976ab2010759d0905342dfb59342c9248b4fb1f 100644
--- a/Source/core/layout/shapes/RectangleShape.h
+++ b/Source/core/layout/shapes/RectangleShape.h
@@ -47,10 +47,10 @@ public:
     {
     }
 
-    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;