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

Source/core/svg/SVGPathSegList.h

Index: Source/core/svg/SVGPathSegList.h
diff --git a/Source/core/svg/SVGPathSegList.h b/Source/core/svg/SVGPathSegList.h
index 7ebf7b435a127b390c4dd58e892338075d44562a..fc3dbf63eeb79bf3e225627a0f2593822010d32e 100644
--- a/Source/core/svg/SVGPathSegList.h
+++ b/Source/core/svg/SVGPathSegList.h
@@ -58,7 +58,7 @@ public:
         return nullptr;
     }
 
-    virtual ~SVGPathSegList();
+    ~SVGPathSegList() override;
 
     const SVGPathByteStream* byteStream() const;
     void clearByteStream() { m_byteStream.clear(); }
@@ -134,14 +134,14 @@ public:
     PassRefPtrWillBeRawPtr<ItemPropertyType> appendItem(PassRefPtrWillBeRawPtr<ItemPropertyType> passItem);
 
     // SVGPropertyBase:
-    virtual PassRefPtrWillBeRawPtr<SVGPropertyBase> cloneForAnimation(const String&) const override;
-    virtual PassRefPtrWillBeRawPtr<SVGPathSegList> clone() override;
-    virtual String valueAsString() const override;
+    PassRefPtrWillBeRawPtr<SVGPropertyBase> cloneForAnimation(const String&) const override;
+    PassRefPtrWillBeRawPtr<SVGPathSegList> clone() 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> 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 AnimatedPath; }