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

Source/core/svg/SVGAnimationElement.h

Index: Source/core/svg/SVGAnimationElement.h
diff --git a/Source/core/svg/SVGAnimationElement.h b/Source/core/svg/SVGAnimationElement.h
index 35f4130b362f5cecb9a6ee4fad86570f43ebd54b..6b2ffb8a4c54261fa3106bd17c556187606211c8 100644
--- a/Source/core/svg/SVGAnimationElement.h
+++ b/Source/core/svg/SVGAnimationElement.h
@@ -140,8 +140,8 @@ protected:
     void computeCSSPropertyValue(SVGElement*, CSSPropertyID, String& value);
     void determinePropertyValueTypes(const String& from, const String& to);
 
-    virtual void parseAttribute(const QualifiedName&, const AtomicString&) override;
-    virtual void svgAttributeChanged(const QualifiedName&) override;
+    void parseAttribute(const QualifiedName&, const AtomicString&) override;
+    void svgAttributeChanged(const QualifiedName&) override;
 
     enum AttributeType {
         AttributeTypeCSS,
@@ -155,14 +155,14 @@ protected:
     String fromValue() const;
 
     // from SVGSMILElement
-    virtual void startedActiveInterval() override;
-    virtual void updateAnimation(float percent, unsigned repeat, SVGSMILElement* resultElement) override;
+    void startedActiveInterval() override;
+    void updateAnimation(float percent, unsigned repeat, SVGSMILElement* resultElement) override;
 
     AnimatedPropertyValueType m_fromPropertyValueType;
     AnimatedPropertyValueType m_toPropertyValueType;
 
-    virtual void setTargetElement(SVGElement*) override;
-    virtual void setAttributeName(const QualifiedName&) override;
+    void setTargetElement(SVGElement*) override;
+    void setAttributeName(const QualifiedName&) override;
 
     bool hasInvalidCSSAttributeType() const { return m_hasInvalidCSSAttributeType; }
 
@@ -178,9 +178,9 @@ protected:
     static bool parseValues(const String&, Vector<String>& result);
 
 private:
-    virtual bool isValid() const override final { return SVGTests::isValid(document()); }
+    bool isValid() const final { return SVGTests::isValid(document()); }
 
-    virtual void animationAttributeChanged() override;
+    void animationAttributeChanged() override;
     void setAttributeType(const AtomicString&);
 
     void checkInvalidCSSAttributeType();