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diff --git a/JavaScriptCore/runtime/JSVariableObject.cpp b/JavaScriptCore/runtime/JSVariableObject.cpp
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+++ b/JavaScriptCore/runtime/JSVariableObject.cpp
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+/*
+ * Copyright (C) 2007, 2008 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.
+ */
+
+#include "config.h"
+#include "JSVariableObject.h"
+
+#include "PropertyNameArray.h"
+
+namespace JSC {
+
+bool JSVariableObject::deleteProperty(ExecState* exec, const Identifier& propertyName)
+{
+    if (symbolTable().contains(propertyName.ustring().rep()))
+        return false;
+
+    return JSObject::deleteProperty(exec, propertyName);
+}
+
+void JSVariableObject::getPropertyNames(ExecState* exec, PropertyNameArray& propertyNames)
+{
+    SymbolTable::const_iterator end = symbolTable().end();
+    for (SymbolTable::const_iterator it = symbolTable().begin(); it != end; ++it) {
+        if (!(it->second.getAttributes() & DontEnum))
+            propertyNames.add(Identifier(exec, it->first.get()));
+    }
+    
+    JSObject::getPropertyNames(exec, propertyNames);
+}
+
+bool JSVariableObject::getPropertyAttributes(ExecState* exec, const Identifier& propertyName, unsigned& attributes) const
+{
+    SymbolTableEntry entry = symbolTable().get(propertyName.ustring().rep());
+    if (!entry.isNull()) {
+        attributes = entry.getAttributes() | DontDelete;
+        return true;
+    }
+    return JSObject::getPropertyAttributes(exec, propertyName, attributes);
+}
+
+bool JSVariableObject::isVariableObject() const
+{
+    return true;
+}
+
+} // namespace JSC