Update SVG classes to use OVERRIDE / FINAL when needed

Source/core/svg/SVGForeignObjectElement.h

Index: Source/core/svg/SVGForeignObjectElement.h
diff --git a/Source/core/svg/SVGForeignObjectElement.h b/Source/core/svg/SVGForeignObjectElement.h
index 1dc1ce72a7441b53de23b6cdabc7535f0c3f5b2e..d7effba16d7c36ba6cce9f1a5e7408321afc1e13 100644
--- a/Source/core/svg/SVGForeignObjectElement.h
+++ b/Source/core/svg/SVGForeignObjectElement.h
@@ -40,16 +40,16 @@ public:
 private:
     explicit SVGForeignObjectElement(Document&);
 
-    virtual bool isValid() const { return SVGTests::isValid(); }
+    virtual bool isValid() const OVERRIDE { return SVGTests::isValid(); }
     bool isSupportedAttribute(const QualifiedName&);
     virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
-    virtual void svgAttributeChanged(const QualifiedName&);
+    virtual void svgAttributeChanged(const QualifiedName&) OVERRIDE;
 
     virtual bool rendererIsNeeded(const RenderStyle&) OVERRIDE;
-    virtual bool childShouldCreateRenderer(const Node& child) const;
-    virtual RenderObject* createRenderer(RenderStyle*);
+    virtual bool childShouldCreateRenderer(const Node& child) const OVERRIDE;
+    virtual RenderObject* createRenderer(RenderStyle*) OVERRIDE;
 
-    virtual bool selfHasRelativeLengths() const;
+    virtual bool selfHasRelativeLengths() const OVERRIDE;
 
     RefPtr<SVGAnimatedLength> m_x;
     RefPtr<SVGAnimatedLength> m_y;