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diff --git a/Source/JavaScriptGlue/UserObjectImp.h b/Source/JavaScriptGlue/UserObjectImp.h
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+/*
+ * Copyright (C) 2005, 2008, 2009 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. 
+ * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
+ *     its contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission. 
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS 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 APPLE OR ITS 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 UserObjectImp_h
+#define UserObjectImp_h
+
+#include "JSUtils.h"
+#include "JSBase.h"
+#include "JSObject.h"
+#include <JavaScriptCore/JSType.h>
+
+class UserObjectImp : public JSObject {
+public:
+    UserObjectImp(PassRefPtr<Structure>, JSUserObject*);
+    virtual ~UserObjectImp();
+
+    virtual const ClassInfo *classInfo() const;
+    static const ClassInfo info;
+
+    virtual CallType getCallData(CallData&);
+
+    virtual void getOwnPropertyNames(ExecState*, PropertyNameArray&, EnumerationMode mode = ExcludeDontEnumProperties);
+
+    virtual JSValue callAsFunction(ExecState *exec);
+    virtual bool getOwnPropertySlot(ExecState *, const Identifier&, PropertySlot&);
+    virtual void put(ExecState *exec, const Identifier &propertyName, JSValue value, PutPropertySlot&);
+
+    JSValue toPrimitive(ExecState*, JSType preferredType = UnspecifiedType) const;
+    virtual bool toBoolean(ExecState *exec) const;
+    virtual double toNumber(ExecState *exec) const;
+    virtual UString toString(ExecState *exec) const;
+
+    virtual void markChildren(MarkStack&);
+
+    JSUserObject *GetJSUserObject() const;
+
+    static PassRefPtr<Structure> createStructure(JSValue prototype)
+    {
+        return Structure::create(prototype, TypeInfo(ObjectType, OverridesGetOwnPropertySlot | OverridesMarkChildren | OverridesGetPropertyNames), AnonymousSlotCount);
+    }
+
+private:
+    static JSValue userObjectGetter(ExecState*, JSValue, const Identifier& propertyName);
+
+    JSUserObject* fJSUserObject;
+};
+
+#endif