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diff --git a/Source/JavaScriptCore/debugger/DebuggerActivation.h b/Source/JavaScriptCore/debugger/DebuggerActivation.h
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+++ b/Source/JavaScriptCore/debugger/DebuggerActivation.h
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+/*
+ * Copyright (C) 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.
+ *
+ * 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 DebuggerActivation_h
+#define DebuggerActivation_h
+
+#include "JSObject.h"
+
+namespace JSC {
+
+class DebuggerActivation : public JSNonFinalObject {
+public:
+    typedef JSNonFinalObject Base;
+
+    static DebuggerActivation* create(VM& vm, JSObject* object)
+    {
+        DebuggerActivation* activation = new (NotNull, allocateCell<DebuggerActivation>(vm.heap)) DebuggerActivation(vm);
+        activation->finishCreation(vm, object);
+        return activation;
+    }
+
+    static void visitChildren(JSCell*, SlotVisitor&);
+    static String className(const JSObject*);
+    static bool getOwnPropertySlot(JSObject*, ExecState*, PropertyName, PropertySlot&);
+    static void put(JSCell*, ExecState*, PropertyName, JSValue, PutPropertySlot&);
+    static bool deleteProperty(JSCell*, ExecState*, PropertyName);
+    static void getOwnPropertyNames(JSObject*, ExecState*, PropertyNameArray&, EnumerationMode);
+    static bool defineOwnProperty(JSObject*, ExecState*, PropertyName, const PropertyDescriptor&, bool shouldThrow);
+
+    DECLARE_EXPORT_INFO;
+
+    static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype) 
+    {
+        return Structure::create(vm, globalObject, prototype, TypeInfo(ObjectType, StructureFlags), info()); 
+    }
+
+protected:
+    static const unsigned StructureFlags = OverridesGetOwnPropertySlot | OverridesVisitChildren | JSObject::StructureFlags;
+
+    JS_EXPORT_PRIVATE void finishCreation(VM&, JSObject* activation);
+
+private:
+    JS_EXPORT_PRIVATE DebuggerActivation(VM&);
+    WriteBarrier<JSActivation> m_activation;
+};
+
+} // namespace JSC
+
+#endif // DebuggerActivation_h