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diff --git a/Source/WebCore/platform/graphics/Gradient.h b/Source/WebCore/platform/graphics/Gradient.h
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+/*
+ * Copyright (C) 2006, 2007, 2008, 2011 Apple Inc. All rights reserved.
+ * Copyright (C) 2007 Alp Toker <alp@atoker.com>
+ * Copyright (C) 2008 Torch Mobile, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
+ */
+
+#ifndef Gradient_h
+#define Gradient_h
+
+#include "AffineTransform.h"
+#include "FloatPoint.h"
+#include "Generator.h"
+#include "GraphicsTypes.h"
+#include <wtf/PassRefPtr.h>
+#include <wtf/Vector.h>
+
+#if PLATFORM(CG)
+
+typedef struct CGContext* CGContextRef;
+
+#define USE_CG_SHADING defined(BUILDING_ON_TIGER) || defined(BUILDING_ON_LEOPARD)
+
+#if USE_CG_SHADING
+typedef struct CGShading* CGShadingRef;
+typedef CGShadingRef PlatformGradient;
+#else
+typedef struct CGGradient* CGGradientRef;
+typedef CGGradientRef PlatformGradient;
+#endif
+
+#elif PLATFORM(QT)
+QT_BEGIN_NAMESPACE
+class QGradient;
+QT_END_NAMESPACE
+typedef QGradient* PlatformGradient;
+#elif PLATFORM(CAIRO)
+typedef struct _cairo_pattern cairo_pattern_t;
+typedef cairo_pattern_t* PlatformGradient;
+#elif PLATFORM(SKIA)
+#if PLATFORM(ANDROID)
+#include "SkShader.h"
+typedef class PlatformGradientRec* PlatformGradient;
+#else
+class SkShader;
+typedef class SkShader* PlatformGradient;
+typedef class SkShader* PlatformPattern;
+#endif
+#elif PLATFORM(HAIKU)
+class BGradient;
+typedef BGradient* PlatformGradient;
+#else
+typedef void* PlatformGradient;
+#endif
+
+namespace WebCore {
+
+    class Color;
+
+    class Gradient : public Generator {
+    public:
+        static PassRefPtr<Gradient> create(const FloatPoint& p0, const FloatPoint& p1)
+        {
+            return adoptRef(new Gradient(p0, p1));
+        }
+        static PassRefPtr<Gradient> create(const FloatPoint& p0, float r0, const FloatPoint& p1, float r1, float aspectRatio = 1)
+        {
+            return adoptRef(new Gradient(p0, r0, p1, r1, aspectRatio));
+        }
+        virtual ~Gradient();
+
+        struct ColorStop;
+        void addColorStop(const ColorStop&);
+        void addColorStop(float, const Color&);
+
+        void getColor(float value, float* r, float* g, float* b, float* a) const;
+        bool hasAlpha() const;
+
+        bool isRadial() const { return m_radial; }
+        bool isZeroSize() const { return m_p0.x() == m_p1.x() && m_p0.y() == m_p1.y() && (!m_radial || m_r0 == m_r1); }
+
+        const FloatPoint& p0() const { return m_p0; }
+        const FloatPoint& p1() const { return m_p1; }
+
+        void setP0(const FloatPoint& p) { m_p0 = p; }
+        void setP1(const FloatPoint& p) { m_p1 = p; }
+
+        float startRadius() const { return m_r0; }
+        float endRadius() const { return m_r1; }
+
+        void setStartRadius(float r) { m_r0 = r; }
+        void setEndRadius(float r) { m_r1 = r; }
+        
+        float aspectRatio() const { return m_aspectRatio; }
+
+#if OS(WINCE) && !PLATFORM(QT)
+        const Vector<ColorStop, 2>& getStops() const;
+#else
+#if PLATFORM(ANDROID)
+        SkShader* getShader(SkShader::TileMode);
+#endif
+        PlatformGradient platformGradient();
+#endif
+
+        struct ColorStop {
+            float stop;
+            float red;
+            float green;
+            float blue;
+            float alpha;
+
+            ColorStop() : stop(0), red(0), green(0), blue(0), alpha(0) { }
+            ColorStop(float s, float r, float g, float b, float a) : stop(s), red(r), green(g), blue(b), alpha(a) { }
+        };
+
+        void setStopsSorted(bool s) { m_stopsSorted = s; }
+        
+        void setSpreadMethod(GradientSpreadMethod);
+        GradientSpreadMethod spreadMethod() { return m_spreadMethod; }
+        void setGradientSpaceTransform(const AffineTransform& gradientSpaceTransformation);
+        // Qt and CG transform the gradient at draw time
+        AffineTransform gradientSpaceTransform() { return m_gradientSpaceTransformation; }
+
+        virtual void fill(GraphicsContext*, const FloatRect&);
+        virtual void adjustParametersForTiledDrawing(IntSize& size, FloatRect& srcRect);
+
+        void setPlatformGradientSpaceTransform(const AffineTransform& gradientSpaceTransformation);
+
+#if PLATFORM(CG)
+        void paint(CGContextRef);
+        void paint(GraphicsContext*);
+#endif
+
+    private:
+        Gradient(const FloatPoint& p0, const FloatPoint& p1);
+        Gradient(const FloatPoint& p0, float r0, const FloatPoint& p1, float r1, float aspectRatio);
+
+        void platformInit() { m_gradient = 0; }
+        void platformDestroy();
+
+        int findStop(float value) const;
+        void sortStopsIfNecessary();
+
+        bool m_radial;
+        FloatPoint m_p0;
+        FloatPoint m_p1;
+        float m_r0;
+        float m_r1;
+        float m_aspectRatio; // For elliptical gradient, width / height.
+        mutable Vector<ColorStop, 2> m_stops;
+        mutable bool m_stopsSorted;
+        mutable int m_lastStop;
+        GradientSpreadMethod m_spreadMethod;
+        AffineTransform m_gradientSpaceTransformation;
+
+        PlatformGradient m_gradient;
+    };
+
+} //namespace
+
+#endif