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

Source/core/svg/SVGPathSegCurvetoQuadraticSmoothAbs.h

Index: Source/core/svg/SVGPathSegCurvetoQuadraticSmoothAbs.h
diff --git a/Source/core/svg/SVGPathSegCurvetoQuadraticSmoothAbs.h b/Source/core/svg/SVGPathSegCurvetoQuadraticSmoothAbs.h
index fc83d6ef9d5c72a6217636b433d94a8e73fc5c66..1cc1d99d315ca66035e95a0c4f7293a9801c9cc2 100644
--- a/Source/core/svg/SVGPathSegCurvetoQuadraticSmoothAbs.h
+++ b/Source/core/svg/SVGPathSegCurvetoQuadraticSmoothAbs.h
@@ -43,8 +43,8 @@ private:
     SVGPathSegCurvetoQuadraticSmoothAbs(SVGPathElement* element, float x, float y)
         : SVGPathSegSingleCoordinate(element, x, y) { }
 
-    virtual unsigned short pathSegType() const override { return PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS; }
-    virtual String pathSegTypeAsLetter() const override { return "T"; }
+    unsigned short pathSegType() const override { return PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS; }
+    String pathSegTypeAsLetter() const override { return "T"; }
 };
 
 } // namespace blink