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diff --git a/Source/JavaScriptCore/runtime/JSWithScope.h b/Source/JavaScriptCore/runtime/JSWithScope.h
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+++ b/Source/JavaScriptCore/runtime/JSWithScope.h
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+/*
+ * Copyright (C) 2012 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 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 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 JSWithScope_h
+#define JSWithScope_h
+
+#include "JSGlobalObject.h"
+
+namespace JSC {
+
+class JSWithScope : public JSScope {
+public:
+    typedef JSScope Base;
+
+    static JSWithScope* create(ExecState* exec, JSObject* object)
+    {
+        JSWithScope* withScope = new (NotNull, allocateCell<JSWithScope>(*exec->heap())) JSWithScope(exec, object);
+        withScope->finishCreation(exec->globalData());
+        return withScope;
+    }
+
+    static JSWithScope* create(ExecState* exec, JSObject* object, JSScope* next)
+    {
+        JSWithScope* withScope = new (NotNull, allocateCell<JSWithScope>(*exec->heap())) JSWithScope(exec, object, next);
+        withScope->finishCreation(exec->globalData());
+        return withScope;
+    }
+
+    JSObject* object() { return m_object.get(); }
+
+    static void visitChildren(JSCell*, SlotVisitor&);
+
+    static Structure* createStructure(JSGlobalData& globalData, JSGlobalObject* globalObject, JSValue proto)
+    {
+        return Structure::create(globalData, globalObject, proto, TypeInfo(WithScopeType, StructureFlags), &s_info);
+    }
+
+    static JS_EXPORTDATA const ClassInfo s_info;
+
+protected:
+    static const unsigned StructureFlags = OverridesVisitChildren | Base::StructureFlags;
+
+private:
+    JSWithScope(ExecState* exec, JSObject* object)
+        : Base(
+            exec->globalData(),
+            exec->lexicalGlobalObject()->withScopeStructure(),
+            exec->scope()
+        )
+        , m_object(exec->globalData(), this, object)
+    {
+    }
+
+    JSWithScope(ExecState* exec, JSObject* object, JSScope* next)
+        : Base(
+            exec->globalData(),
+            exec->lexicalGlobalObject()->withScopeStructure(),
+            next
+        )
+        , m_object(exec->globalData(), this, object)
+    {
+    }
+
+    WriteBarrier<JSObject> m_object;
+};
+
+} // namespace JSC
+
+#endif // JSWithScope_h