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diff --git a/Source/WebCore/css/StyleList.h b/Source/WebCore/css/StyleList.h
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+++ b/Source/WebCore/css/StyleList.h
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+/*
+ * Copyright (C) 1999-2003 Lars Knoll (knoll@kde.org)
+ *               1999 Waldo Bastian (bastian@kde.org)
+ * Copyright (C) 2004, 2006, 2008 Apple Inc. All rights reserved.
+ *
+ * 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 StyleList_h
+#define StyleList_h
+
+#include "StyleBase.h"
+#include <wtf/Forward.h>
+#include <wtf/RefPtr.h>
+#include <wtf/Vector.h>
+
+namespace WebCore {
+
+    // a style class which has a list of children (StyleSheets for example)
+    class StyleList : public StyleBase {
+    public:
+        unsigned length() { return m_children.size(); }
+        StyleBase* item(unsigned num) { return num < length() ? m_children[num].get() : 0; }
+
+        void append(PassRefPtr<StyleBase>);
+        void insert(unsigned position, PassRefPtr<StyleBase>);
+        void remove(unsigned position);
+
+    protected:
+        StyleList(StyleBase* parent) : StyleBase(parent) { }
+
+        Vector<RefPtr<StyleBase> > m_children;
+    };
+}
+
+#endif