Update SVG classes to use OVERRIDE / FINAL when needed

Source/core/svg/SVGClipPathElement.h

Index: Source/core/svg/SVGClipPathElement.h
diff --git a/Source/core/svg/SVGClipPathElement.h b/Source/core/svg/SVGClipPathElement.h
index 66e85032d5d355082594491ea035e9c6f23ee9ff..fdbd45293b97fb0264bb4628cb371586d6c75f28 100644
--- a/Source/core/svg/SVGClipPathElement.h
+++ b/Source/core/svg/SVGClipPathElement.h
@@ -38,15 +38,15 @@ public:
 private:
     explicit SVGClipPathElement(Document&);
 
-    virtual bool isValid() const { return SVGTests::isValid(); }
-    virtual bool needsPendingResourceHandling() const { return false; }
+    virtual bool isValid() const OVERRIDE { return SVGTests::isValid(); }
+    virtual bool needsPendingResourceHandling() const OVERRIDE { return false; }
 
     bool isSupportedAttribute(const QualifiedName&);
     virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
-    virtual void svgAttributeChanged(const QualifiedName&);
-    virtual void childrenChanged(bool changedByParser = false, Node* beforeChange = 0, Node* afterChange = 0, int childCountDelta = 0);
+    virtual void svgAttributeChanged(const QualifiedName&) OVERRIDE;
+    virtual void childrenChanged(bool changedByParser = false, Node* beforeChange = 0, Node* afterChange = 0, int childCountDelta = 0) OVERRIDE;
 
-    virtual RenderObject* createRenderer(RenderStyle*);
+    virtual RenderObject* createRenderer(RenderStyle*) OVERRIDE;
 
     BEGIN_DECLARE_ANIMATED_PROPERTIES(SVGClipPathElement)
         DECLARE_ANIMATED_ENUMERATION(ClipPathUnits, clipPathUnits, SVGUnitTypes::SVGUnitType)