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

Source/core/svg/SVGIntegerOptionalInteger.h

Index: Source/core/svg/SVGIntegerOptionalInteger.h
diff --git a/Source/core/svg/SVGIntegerOptionalInteger.h b/Source/core/svg/SVGIntegerOptionalInteger.h
index cc9ffe7c4e44da126d516b65b217cf197052f777..b62fb1f82e40bd0f0633dec40492232d4c32a94b 100644
--- a/Source/core/svg/SVGIntegerOptionalInteger.h
+++ b/Source/core/svg/SVGIntegerOptionalInteger.h
@@ -48,14 +48,14 @@ public:
     }
 
     PassRefPtrWillBeRawPtr<SVGIntegerOptionalInteger> clone() const;
-    virtual PassRefPtrWillBeRawPtr<SVGPropertyBase> cloneForAnimation(const String&) const override;
+    PassRefPtrWillBeRawPtr<SVGPropertyBase> cloneForAnimation(const String&) const override;
 
-    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;
 
     static AnimatedPropertyType classType() { return AnimatedIntegerOptionalInteger; }