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diff --git a/WebCore/css/MediaQueryListListener.h b/WebCore/css/MediaQueryListListener.h
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+++ b/WebCore/css/MediaQueryListListener.h
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+/*
+ * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Library General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2 of the License, or (at your option) any later version.
+ *
+ *  This library is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  Library General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Library General Public License
+ *  along with this library; see the file COPYING.LIB.  If not, write to
+ *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ *  Boston, MA 02110-1301, USA.
+ */
+
+#ifndef MediaQueryListListener_h
+#define MediaQueryListListener_h
+
+#include "PlatformString.h"
+#include "ScriptState.h"
+#include "ScriptValue.h"
+
+#include <wtf/RefCounted.h>
+
+namespace WebCore {
+
+class MediaQueryList;
+
+// See http://dev.w3.org/csswg/cssom-view/#the-mediaquerylist-interface
+
+class MediaQueryListListener : public RefCounted<MediaQueryListListener> {
+public:
+    static PassRefPtr<MediaQueryListListener> create(ScriptValue value)
+    {
+        if (!value.isFunction())
+            return 0;
+        return adoptRef(new MediaQueryListListener(value));
+    }
+    void queryChanged(ScriptState*, MediaQueryList*);
+
+    bool operator==(const MediaQueryListListener& other) const { return m_value == other.m_value; }
+
+private:
+    MediaQueryListListener(ScriptValue value) : m_value(value) { }
+
+    ScriptValue m_value;
+};
+
+}
+
+#endif // MediaQueryListListener_h