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diff --git a/WebCore/platform/graphics/ImageBuffer.h b/WebCore/platform/graphics/ImageBuffer.h
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+/*
+ * Copyright (C) 2006 Nikolas Zimmermann <zimmermann@kde.org>
+ * Copyright (C) 2007, 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 ImageBuffer_h
+#define ImageBuffer_h
+
+#include "Image.h"
+#include "IntSize.h"
+#include "ImageBufferData.h"
+#include <wtf/OwnPtr.h>
+#include <wtf/PassRefPtr.h>
+#include <memory>
+
+namespace WebCore {
+
+    class GraphicsContext;
+    class ImageData;
+    class IntPoint;
+    class IntRect;
+    class String;
+
+    class ImageBuffer : Noncopyable {
+    public:
+        // Will return a null pointer on allocation failure.
+        static std::auto_ptr<ImageBuffer> create(const IntSize& size, bool grayScale)
+        {
+            bool success = false;
+            std::auto_ptr<ImageBuffer> buf(new ImageBuffer(size, grayScale, success));
+            if (success)
+                return buf;
+            return std::auto_ptr<ImageBuffer>();
+        }
+
+        ~ImageBuffer();
+
+        const IntSize& size() const { return m_size; }
+        GraphicsContext* context() const;
+
+        Image* image() const;
+
+        void clearImage() { m_image.clear(); }
+
+        PassRefPtr<ImageData> getImageData(const IntRect& rect) const;
+        void putImageData(ImageData* source, const IntRect& sourceRect, const IntPoint& destPoint);
+
+        String toDataURL(const String& mimeType) const;
+
+    private:
+        ImageBufferData m_data;
+
+        IntSize m_size;
+        OwnPtr<GraphicsContext> m_context;
+        mutable RefPtr<Image> m_image;
+
+        // This constructor will place its succes into the given out-variable
+        // so that create() knows when it should return failure.
+        ImageBuffer(const IntSize&, bool grayScale, bool& success);
+    };
+
+} // namespace WebCore
+
+#endif // ImageBuffer_h