diff -r 000000000000 -r 4f2f89ce4247 WebCore/bindings/js/ScriptCachedFrameData.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/bindings/js/ScriptCachedFrameData.h	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2008, Google Inc. All rights reserved.
+ * Copyright (C) 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:
+ * 
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * 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.
+ *     * Neither the name of Google Inc. 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 THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
+ * OWNER 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 ScriptCachedFrameData_h
+#define ScriptCachedFrameData_h
+
+#include <runtime/Protect.h>
+
+namespace WebCore {
+    class Frame;
+    class JSDOMWindow;
+    class DOMWindow;
+    class DOMWrapperWorld;
+
+    class ScriptCachedFrameData  : public Noncopyable {
+        typedef HashMap< RefPtr<DOMWrapperWorld>, JSC::ProtectedPtr<JSDOMWindow> > JSDOMWindowSet;
+
+    public:
+        ScriptCachedFrameData(Frame*);
+        ~ScriptCachedFrameData();
+
+        void restore(Frame*);
+        void clear();
+        DOMWindow* domWindow() const;
+
+    private:
+        JSDOMWindowSet m_windows;
+        DOMWindow* m_domWindow;
+    };
+
+} // namespace WebCore
+
+#endif // ScriptCachedFrameData_h