Fix virtual/override/final usage in Source/platform/.

Source/platform/transforms/RotateTransformOperation.h

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *
  * 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
@@ skipping 32 matching lines @@
 
     double x() const { return m_x; }
     double y() const { return m_y; }
     double z() const { return m_z; }
     double angle() const { return m_angle; }
 
     FloatPoint3D axis() const;
     static bool shareSameAxis(const RotateTransformOperation* fromRotation, const RotateTransformOperation* toRotation, FloatPoint3D* axis, double* fromAngle, double* toAngle);
 
     virtual bool canBlendWith(const TransformOperation& other) const;
-    virtual OperationType type() const override { return m_type; }
+    OperationType type() const override { return m_type; }
 
-    virtual void apply(TransformationMatrix& transform, const FloatSize& /*borderBoxSize*/) const override
+    void apply(TransformationMatrix& transform, const FloatSize& /*borderBoxSize*/) const override
     {
         transform.rotate3d(m_x, m_y, m_z, m_angle);
     }
 
     static bool isMatchingOperationType(OperationType type) { return type == Rotate || type == RotateX || type == RotateY || type == RotateZ || type == Rotate3D; }
 
 private:
-    virtual bool operator==(const TransformOperation& o) const override
+    bool operator==(const TransformOperation& o) const override
     {
         if (!isSameType(o))
             return false;
         const RotateTransformOperation* r = static_cast<const RotateTransformOperation*>(&o);
         return m_x == r->m_x && m_y == r->m_y && m_z == r->m_z && m_angle == r->m_angle;
     }
 
-    virtual PassRefPtr<TransformOperation> blend(const TransformOperation* from, double progress, bool blendToIdentity = false) override;
+    PassRefPtr<TransformOperation> blend(const TransformOperation* from, double progress, bool blendToIdentity = false) override;
 
     RotateTransformOperation(double x, double y, double z, double angle, OperationType type)
         : m_x(x)
         , m_y(y)
         , m_z(z)
         , m_angle(angle)
         , m_type(type)
     {
         ASSERT(isMatchingOperationType(type));
     }
 
     double m_x;
     double m_y;
     double m_z;
     double m_angle;
     OperationType m_type;
 };
 
 DEFINE_TRANSFORM_TYPE_CASTS(RotateTransformOperation);
 
 } // namespace blink
 
 #endif // RotateTransformOperation_h