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

Source/core/svg/SVGPathTraversalStateBuilder.h

 /*
  * Copyright (C) 2007 Eric Seidel <eric@webkit.org>
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 18 matching lines @@
 class FloatPoint;
 
 class SVGPathTraversalStateBuilder final : public SVGPathConsumer {
 public:
     SVGPathTraversalStateBuilder(PathTraversalState::PathTraversalAction, float desiredLength = 0);
 
     unsigned pathSegmentIndex() const { return m_segmentIndex; }
     float totalLength();
     FloatPoint currentPoint();
 
-    virtual void incrementPathSegmentCount() override;
-    virtual bool continueConsuming() override;
+    void incrementPathSegmentCount() override;
+    bool continueConsuming() override;
 
 private:
-    virtual void emitSegment(const PathSegmentData&) override;
+    void emitSegment(const PathSegmentData&) override;
 
     PathTraversalState m_traversalState;
     unsigned m_segmentIndex;
 };
 
 } // namespace blink
 
 #endif // SVGPathTraversalStateBuilder_h