Fix virtual/override/final usage in Source/core/svg/.

Source/core/svg/SVGRect.h

Index: Source/core/svg/SVGRect.h
diff --git a/Source/core/svg/SVGRect.h b/Source/core/svg/SVGRect.h
index b81f5f94689b7d7432f9f3c71d82e0f7711b73f6..b305cdb6586b3c5029ef25e0086e012da32c6307 100644
--- a/Source/core/svg/SVGRect.h
+++ b/Source/core/svg/SVGRect.h
@@ -62,12 +62,12 @@ public:
     void setWidth(float f) { m_value.setWidth(f); }
     void setHeight(float f) { m_value.setHeight(f); }
 
-    virtual String valueAsString() const override;
+    String valueAsString() const override;
     void setValueAsString(const String&, ExceptionState&);
 
-    virtual void add(PassRefPtrWillBeRawPtr<SVGPropertyBase>, SVGElement*) override;
-    virtual void calculateAnimatedValue(SVGAnimationElement*, float percentage, unsigned repeatCount, PassRefPtrWillBeRawPtr<SVGPropertyBase> from, PassRefPtrWillBeRawPtr<SVGPropertyBase> to, PassRefPtrWillBeRawPtr<SVGPropertyBase> toAtEndOfDurationValue, SVGElement* contextElement) override;
-    virtual float calculateDistance(PassRefPtrWillBeRawPtr<SVGPropertyBase> to, SVGElement* contextElement) override;
+    void add(PassRefPtrWillBeRawPtr<SVGPropertyBase>, SVGElement*) override;
+    void calculateAnimatedValue(SVGAnimationElement*, float percentage, unsigned repeatCount, PassRefPtrWillBeRawPtr<SVGPropertyBase> from, PassRefPtrWillBeRawPtr<SVGPropertyBase> to, PassRefPtrWillBeRawPtr<SVGPropertyBase> toAtEndOfDurationValue, SVGElement* contextElement) override;
+    float calculateDistance(PassRefPtrWillBeRawPtr<SVGPropertyBase> to, SVGElement* contextElement) override;
 
     bool isValid() const { return m_isValid; }
     void setInvalid();