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

Source/core/svg/SVGStringList.h

Index: Source/core/svg/SVGStringList.h
diff --git a/Source/core/svg/SVGStringList.h b/Source/core/svg/SVGStringList.h
index 4c86da2bdb1099a9d19c44ed66e0f1c2b4c0bf08..a787c523426e5df43d1fec9a8108cf206f8c8458 100644
--- a/Source/core/svg/SVGStringList.h
+++ b/Source/core/svg/SVGStringList.h
@@ -59,7 +59,7 @@ public:
         return adoptRefWillBeNoop(new SVGStringList());
     }
 
-    virtual ~SVGStringList();
+    ~SVGStringList() override;
 
     const Vector<String>& values() const { return m_values; }
 
@@ -75,11 +75,11 @@ public:
 
     // SVGPropertyBase:
     void setValueAsString(const String&, ExceptionState&);
-    virtual String valueAsString() const override;
+    String valueAsString() const override;
 
-    virtual void add(PassRefPtrWillBeRawPtr<SVGPropertyBase>, SVGElement*) override;
-    virtual void calculateAnimatedValue(SVGAnimationElement*, float percentage, unsigned repeatCount, PassRefPtrWillBeRawPtr<SVGPropertyBase> fromValue, PassRefPtrWillBeRawPtr<SVGPropertyBase> toValue, PassRefPtrWillBeRawPtr<SVGPropertyBase> toAtEndOfDurationValue, SVGElement*) override;
-    virtual float calculateDistance(PassRefPtrWillBeRawPtr<SVGPropertyBase> to, SVGElement*) override;
+    void add(PassRefPtrWillBeRawPtr<SVGPropertyBase>, SVGElement*) override;
+    void calculateAnimatedValue(SVGAnimationElement*, float percentage, unsigned repeatCount, PassRefPtrWillBeRawPtr<SVGPropertyBase> fromValue, PassRefPtrWillBeRawPtr<SVGPropertyBase> toValue, PassRefPtrWillBeRawPtr<SVGPropertyBase> toAtEndOfDurationValue, SVGElement*) override;
+    float calculateDistance(PassRefPtrWillBeRawPtr<SVGPropertyBase> to, SVGElement*) override;
 
     static AnimatedPropertyType classType() { return AnimatedStringList; }