Update SVG classes to use OVERRIDE / FINAL when needed

Source/core/svg/SVGTextContentElement.h

Index: Source/core/svg/SVGTextContentElement.h
diff --git a/Source/core/svg/SVGTextContentElement.h b/Source/core/svg/SVGTextContentElement.h
index 38848d9216d5a0aa4d66efc03adf6216548c0f9b..799a9c8da3c3ca159b9b6155e2324d851866e391 100644
--- a/Source/core/svg/SVGTextContentElement.h
+++ b/Source/core/svg/SVGTextContentElement.h
@@ -94,18 +94,18 @@ public:
 protected:
     SVGTextContentElement(const QualifiedName&, Document&);
 
-    virtual bool isValid() const { return SVGTests::isValid(); }
+    virtual bool isValid() const OVERRIDE FINAL { return SVGTests::isValid(); }
 
     bool isSupportedAttribute(const QualifiedName&);
     virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
-    virtual bool isPresentationAttribute(const QualifiedName&) const OVERRIDE;
-    virtual void collectStyleForPresentationAttribute(const QualifiedName&, const AtomicString&, MutableStylePropertySet*) OVERRIDE;
-    virtual void svgAttributeChanged(const QualifiedName&);
+    virtual bool isPresentationAttribute(const QualifiedName&) const OVERRIDE FINAL;
+    virtual void collectStyleForPresentationAttribute(const QualifiedName&, const AtomicString&, MutableStylePropertySet*) OVERRIDE FINAL;
+    virtual void svgAttributeChanged(const QualifiedName&) OVERRIDE;
 
-    virtual bool selfHasRelativeLengths() const;
+    virtual bool selfHasRelativeLengths() const OVERRIDE;
 
 private:
-    virtual bool isTextContent() const { return true; }
+    virtual bool isTextContent() const OVERRIDE FINAL { return true; }
 
     RefPtr<SVGAnimatedLength> m_textLength;
     bool m_textLengthIsSpecifiedByUser;