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diff --git a/Source/WebCore/html/canvas/WebGLContextAttributes.h b/Source/WebCore/html/canvas/WebGLContextAttributes.h
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+++ b/Source/WebCore/html/canvas/WebGLContextAttributes.h
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+/*
+ * Copyright (c) 2010, Google 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:
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * 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 THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "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 THE COPYRIGHT
+ * OWNER 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 WebGLContextAttributes_h
+#define WebGLContextAttributes_h
+
+#include "CanvasContextAttributes.h"
+#include "GraphicsContext3D.h"
+#include <wtf/PassRefPtr.h>
+
+namespace WebCore {
+
+class WebGLContextAttributes : public CanvasContextAttributes {
+  public:
+    virtual ~WebGLContextAttributes();
+
+    // Create a new attributes object
+    static PassRefPtr<WebGLContextAttributes> create();
+
+    // Create a new attributes object initialized with preexisting attributes
+    static PassRefPtr<WebGLContextAttributes> create(GraphicsContext3D::Attributes attributes);
+
+    // Whether or not the drawing buffer has an alpha channel; default=true
+    bool alpha() const;
+    void setAlpha(bool alpha);
+
+    // Whether or not the drawing buffer has a depth buffer; default=true
+    bool depth() const;
+    void setDepth(bool depth);
+
+    // Whether or not the drawing buffer has a stencil buffer; default=true
+    bool stencil() const;
+    void setStencil(bool stencil);
+
+    // Whether or not the drawing buffer is antialiased; default=true
+    bool antialias() const;
+    void setAntialias(bool antialias);
+
+    // Whether or not to treat the values in the drawing buffer as
+    // though their alpha channel has already been multiplied into the
+    // color channels; default=true
+    bool premultipliedAlpha() const;
+    void setPremultipliedAlpha(bool premultipliedAlpha);
+
+    // Fetches a copy of the attributes stored in this object in a
+    // form that can be used to initialize a GraphicsContext3D.
+    GraphicsContext3D::Attributes attributes() const;
+
+  protected:
+    WebGLContextAttributes();
+    WebGLContextAttributes(GraphicsContext3D::Attributes attributes);
+
+  private:
+    GraphicsContext3D::Attributes m_attrs;
+};
+
+} // namespace WebCore
+
+#endif // WebGLContextAttributes_h