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diff --git a/Source/WebCore/html/canvas/WebGLVertexArrayObjectOES.h b/Source/WebCore/html/canvas/WebGLVertexArrayObjectOES.h
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+/*
+ * Copyright (C) 2011 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:
+ * 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 WebGLVertexArrayObjectOES_h
+#define WebGLVertexArrayObjectOES_h
+
+#include "WebGLBuffer.h"
+#include "WebGLObject.h"
+
+#include <wtf/PassRefPtr.h>
+#include <wtf/RefCounted.h>
+
+namespace WebCore {
+
+class WebGLVertexArrayObjectOES : public WebGLObject {
+public:
+    enum VaoType {
+        VaoTypeDefault,
+        VaoTypeUser,
+    };
+    
+    virtual ~WebGLVertexArrayObjectOES() { deleteObject(); }
+
+    static PassRefPtr<WebGLVertexArrayObjectOES> create(WebGLRenderingContext*, VaoType);
+    
+    // Cached values for vertex attrib range checks
+    struct VertexAttribState {
+        VertexAttribState()
+            : enabled(false)
+            , bytesPerElement(0)
+            , size(4)
+            , type(GraphicsContext3D::FLOAT)
+            , normalized(false)
+            , stride(16)
+            , originalStride(0)
+            , offset(0)
+        {
+        }
+        
+        bool enabled;
+        RefPtr<WebGLBuffer> bufferBinding;
+        GC3Dsizei bytesPerElement;
+        GC3Dint size;
+        GC3Denum type;
+        bool normalized;
+        GC3Dsizei stride;
+        GC3Dsizei originalStride;
+        GC3Dintptr offset;
+    };
+    
+    bool isDefaultObject() const { return m_type == VaoTypeDefault; }
+    
+    bool hasEverBeenBound() const { return object() && m_hasEverBeenBound; }
+    void setHasEverBeenBound() { m_hasEverBeenBound = true; }
+    
+    PassRefPtr<WebGLBuffer> getElementArrayBuffer() const { return m_boundElementArrayBuffer; }
+    void setElementArrayBuffer(PassRefPtr<WebGLBuffer> buffer) { m_boundElementArrayBuffer = buffer; }
+    
+    VertexAttribState& getVertexAttribState(int index) { return m_vertexAttribState[index]; }
+
+private:
+    WebGLVertexArrayObjectOES(WebGLRenderingContext*, VaoType);
+
+    virtual void deleteObjectImpl(Platform3DObject);
+
+    virtual bool isVertexArray() const { return true; }
+    
+    VaoType m_type;
+    bool m_hasEverBeenBound;
+    RefPtr<WebGLBuffer> m_boundElementArrayBuffer;
+    Vector<VertexAttribState> m_vertexAttribState;
+};
+
+} // namespace WebCore
+
+#endif // WebGLVertexArrayObjectOES_h