Apply FINAL to the RenderObject hierarchy.

Source/core/rendering/RenderMedia.h

Index: Source/core/rendering/RenderMedia.h
diff --git a/Source/core/rendering/RenderMedia.h b/Source/core/rendering/RenderMedia.h
index 48b852edf1e4da5b002b26147e069a1abbe80dcc..05bc5271fc087c78f36cef10a7eafe8d73e10443 100644
--- a/Source/core/rendering/RenderMedia.h
+++ b/Source/core/rendering/RenderMedia.h
@@ -52,16 +52,16 @@ protected:
     virtual void layout();
 
 private:
-    virtual RenderObjectChildList* virtualChildren() { return children(); }
-    virtual const RenderObjectChildList* virtualChildren() const { return children(); }
-    virtual bool canHaveChildren() const { return true; }
+    virtual RenderObjectChildList* virtualChildren() FINAL { return children(); }
+    virtual const RenderObjectChildList* virtualChildren() const FINAL { return children(); }
+    virtual bool canHaveChildren() const FINAL { return true; }
 
     virtual const char* renderName() const { return "RenderMedia"; }
-    virtual bool isMedia() const { return true; }
-    virtual bool isImage() const { return false; }
+    virtual bool isMedia() const FINAL { return true; }
+    virtual bool isImage() const FINAL { return false; }
     virtual void paintReplaced(PaintInfo&, const LayoutPoint&);
 
-    virtual bool requiresForcedStyleRecalcPropagation() const { return true; }
+    virtual bool requiresForcedStyleRecalcPropagation() const FINAL { return true; }
 
     RenderObjectChildList m_children;
 };