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

Source/core/svg/SVGPathSegCurvetoCubicAbs.h

Index: Source/core/svg/SVGPathSegCurvetoCubicAbs.h
diff --git a/Source/core/svg/SVGPathSegCurvetoCubicAbs.h b/Source/core/svg/SVGPathSegCurvetoCubicAbs.h
index 04835a544e7e9abc2e70b58dcc9559d817708ea2..fab1c297c579988e46c846e4ecb7b1feab4674ac 100644
--- a/Source/core/svg/SVGPathSegCurvetoCubicAbs.h
+++ b/Source/core/svg/SVGPathSegCurvetoCubicAbs.h
@@ -43,8 +43,8 @@ private:
     SVGPathSegCurvetoCubicAbs(SVGPathElement* element, float x, float y, float x1, float y1, float x2, float y2)
         : SVGPathSegCurvetoCubic(element, x, y, x1, y1, x2, y2) { }
 
-    virtual unsigned short pathSegType() const override { return PATHSEG_CURVETO_CUBIC_ABS; }
-    virtual String pathSegTypeAsLetter() const override { return "C"; }
+    unsigned short pathSegType() const override { return PATHSEG_CURVETO_CUBIC_ABS; }
+    String pathSegTypeAsLetter() const override { return "C"; }
 };
 
 } // namespace blink