Resolve light-source position/direction when updated

Source/platform/graphics/filters/SpotLightSource.h

 /*
  * Copyright (C) 2008 Alex Mathews <possessedpenguinbob@gmail.com>
  * Copyright (C) 2004, 2005, 2006, 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005 Rob Buis <buis@kde.org>
  * Copyright (C) 2005 Eric Seidel <eric@webkit.org>
  *
  * 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.
@@ skipping 29 matching lines @@
         FloatPoint3D position(m_position.x() * scale.x() - offset.width(), m_position.y() * scale.y() - offset.height(), m_position.z() * scale.z());
         FloatPoint3D direction(m_direction.x() * scale.x() - offset.width(), m_direction.y() * scale.y() - offset.height(), m_direction.z() * scale.z());
         return adoptRef(new SpotLightSource(position, direction, m_specularExponent, m_limitingConeAngle));
     }
 
     const FloatPoint3D& position() const { return m_position; }
     const FloatPoint3D& direction() const { return m_direction; }
     float specularExponent() const { return m_specularExponent; }
     float limitingConeAngle() const { return m_limitingConeAngle; }
 
-    virtual bool setX(float) OVERRIDE;
-    virtual bool setY(float) OVERRIDE;
-    virtual bool setZ(float) OVERRIDE;
-    virtual bool setPointsAtX(float) OVERRIDE;
-    virtual bool setPointsAtY(float) OVERRIDE;
-    virtual bool setPointsAtZ(float) OVERRIDE;
+    virtual bool setPosition(const FloatPoint3D&) OVERRIDE;
+    virtual bool setPointsAt(const FloatPoint3D&) OVERRIDE;
 
     virtual bool setSpecularExponent(float) OVERRIDE;
     virtual bool setLimitingConeAngle(float) OVERRIDE;
 
     virtual void initPaintingData(PaintingData&) const OVERRIDE;
     virtual void updatePaintingData(PaintingData&, int x, int y, float z) const OVERRIDE;
 
     virtual TextStream& externalRepresentation(TextStream&) const OVERRIDE;
 
 private:
@@ skipping 10 matching lines @@
     FloatPoint3D m_position;
     FloatPoint3D m_direction;
 
     float m_specularExponent;
     float m_limitingConeAngle;
 };
 
 } // namespace WebCore
 
 #endif // SpotLightSource_h