--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/bindings/js/JSTreeWalkerCustom.cpp	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2006, 2008, 2009 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.
+ */
+
+#include "config.h"
+#include "JSTreeWalker.h"
+
+#include "JSNode.h"
+#include "Node.h"
+#include "NodeFilter.h"
+#include "TreeWalker.h"
+
+using namespace JSC;
+
+namespace WebCore {
+    
+void JSTreeWalker::markChildren(MarkStack& markStack)
+{
+    Base::markChildren(markStack);
+
+    if (NodeFilter* filter = m_impl->filter())
+        filter->markAggregate(markStack);
+}
+
+}