Update SVG classes to use OVERRIDE / FINAL when needed

Source/core/svg/SVGZoomEvent.h

Index: Source/core/svg/SVGZoomEvent.h
diff --git a/Source/core/svg/SVGZoomEvent.h b/Source/core/svg/SVGZoomEvent.h
index 59d31ae0b14c8d22e7448bea002c5700f9ad15e0..0ec57a942d07480f5a5c6c9226aad43fbddf838b 100644
--- a/Source/core/svg/SVGZoomEvent.h
+++ b/Source/core/svg/SVGZoomEvent.h
@@ -28,7 +28,7 @@
 
 namespace WebCore {
 
-class SVGZoomEvent : public UIEvent {
+class SVGZoomEvent FINAL : public UIEvent {
 public:
     static PassRefPtr<SVGZoomEvent> create() { return adoptRef(new SVGZoomEvent); }
 
@@ -45,7 +45,7 @@ public:
 
     SVGPoint newTranslate() const;
 
-    virtual const AtomicString& interfaceName() const;
+    virtual const AtomicString& interfaceName() const OVERRIDE;
 
 private:
     SVGZoomEvent();