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diff --git a/WebCore/css/CSSGradientValue.h b/WebCore/css/CSSGradientValue.h
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+/*
+ * Copyright (C) 2008 Apple Inc. All rights reserved.
+ *
+ * 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 CSSGradientValue_h
+#define CSSGradientValue_h
+
+#include "CSSImageGeneratorValue.h"
+#include "CSSPrimitiveValue.h"
+#include <wtf/RefPtr.h>
+#include <wtf/Vector.h>
+
+namespace WebCore {
+
+class FloatPoint;
+class Gradient;
+
+enum CSSGradientType { CSSLinearGradient, CSSRadialGradient };
+
+struct CSSGradientColorStop {
+    CSSGradientColorStop()
+        : m_stop(0)
+    {
+    }
+    
+    float m_stop;
+    RefPtr<CSSPrimitiveValue> m_color;
+};
+
+class CSSGradientValue : public CSSImageGeneratorValue {
+public:
+    static PassRefPtr<CSSGradientValue> create()
+    {
+        return adoptRef(new CSSGradientValue);
+    }
+
+    virtual String cssText() const;
+
+    virtual Image* image(RenderObject*, const IntSize&);
+
+    CSSGradientType type() const { return m_type; }
+    void setType(CSSGradientType type) { m_type = type; }
+    
+    void setFirstX(PassRefPtr<CSSPrimitiveValue> val) { m_firstX = val; }
+    void setFirstY(PassRefPtr<CSSPrimitiveValue> val) { m_firstY = val; }
+    void setSecondX(PassRefPtr<CSSPrimitiveValue> val) { m_secondX = val; }
+    void setSecondY(PassRefPtr<CSSPrimitiveValue> val) { m_secondY = val; }
+    
+    void setFirstRadius(PassRefPtr<CSSPrimitiveValue> val) { m_firstRadius = val; }
+    void setSecondRadius(PassRefPtr<CSSPrimitiveValue> val) { m_secondRadius = val; }
+
+    void addStop(const CSSGradientColorStop& stop) { m_stops.append(stop); }
+
+    void sortStopsIfNeeded();
+
+private:
+    CSSGradientValue()
+        : m_type(CSSLinearGradient)
+        , m_stopsSorted(false)
+    {
+    }
+    
+    // Create the gradient for a given size.
+    PassRefPtr<Gradient> createGradient(RenderObject*, const IntSize&);
+    
+    // Resolve points/radii to front end values.
+    FloatPoint resolvePoint(CSSPrimitiveValue*, CSSPrimitiveValue*, const IntSize&, float zoomFactor);
+    float resolveRadius(CSSPrimitiveValue*, float zoomFactor);
+    
+    // Type
+    CSSGradientType m_type;
+
+    // Points
+    RefPtr<CSSPrimitiveValue> m_firstX;
+    RefPtr<CSSPrimitiveValue> m_firstY;
+    
+    RefPtr<CSSPrimitiveValue> m_secondX;
+    RefPtr<CSSPrimitiveValue> m_secondY;
+    
+    // Radii (for radial gradients only)
+    RefPtr<CSSPrimitiveValue> m_firstRadius;
+    RefPtr<CSSPrimitiveValue> m_secondRadius;
+    
+    // Stops
+    Vector<CSSGradientColorStop> m_stops;
+    bool m_stopsSorted;
+};
+
+} // namespace WebCore
+
+#endif // CSSGradientValue_h