Apply FINAL to the RenderObject hierarchy.

Source/core/rendering/RenderFlexibleBox.h

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 26 matching lines @@
 
 class RenderFlexibleBox : public RenderBlock {
 public:
     RenderFlexibleBox(Element*);
     virtual ~RenderFlexibleBox();
 
     static RenderFlexibleBox* createAnonymous(Document*);
 
     virtual const char* renderName() const OVERRIDE;
 
-    virtual bool isFlexibleBox() const OVERRIDE { return true; }
-    virtual bool avoidsFloats() const OVERRIDE { return true; }
-    virtual bool canCollapseAnonymousBlockChild() const OVERRIDE { return false; }
-    virtual void layoutBlock(bool relayoutChildren, LayoutUnit pageLogicalHeight = 0) OVERRIDE;
+    virtual bool isFlexibleBox() const OVERRIDE FINAL { return true; }
+    virtual bool avoidsFloats() const OVERRIDE FINAL { return true; }
+    virtual bool canCollapseAnonymousBlockChild() const OVERRIDE FINAL { return false; }
+    virtual void layoutBlock(bool relayoutChildren, LayoutUnit pageLogicalHeight = 0) OVERRIDE FINAL;
 
     virtual int baselinePosition(FontBaseline, bool firstLine, LineDirectionMode, LinePositionMode = PositionOnContainingLine) const OVERRIDE;
     virtual int firstLineBoxBaseline() const OVERRIDE;
     virtual int inlineBlockBaseline(LineDirectionMode) const OVERRIDE;
 
-    virtual void paintChildren(PaintInfo& forSelf, const LayoutPoint&, PaintInfo& forChild, bool usePrintRect) OVERRIDE;
+    virtual void paintChildren(PaintInfo& forSelf, const LayoutPoint&, PaintInfo& forChild, bool usePrintRect) OVERRIDE FINAL;
 
     bool isHorizontalFlow() const;
 
 protected:
     virtual void computeIntrinsicLogicalWidths(LayoutUnit& minLogicalWidth, LayoutUnit& maxLogicalWidth) const OVERRIDE;
     virtual void computePreferredLogicalWidths() OVERRIDE;
 
     virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle);
 
 private:
@@ skipping 122 matching lines @@
     ASSERT_WITH_SECURITY_IMPLICATION(!object || object->isFlexibleBox());
     return static_cast<const RenderFlexibleBox*>(object);
 }
 
 // This will catch anyone doing an unnecessary cast.
 void toRenderFlexibleBox(const RenderFlexibleBox*);
 
 } // namespace WebCore
 
 #endif // RenderFlexibleBox_h