Drop [LegacyImplementedInBaseClass] from ParentNode interface

Source/core/dom/ParentNode.h

 /*
- * Copyright (C) 2006, 2007, 2008, 2010 Apple Inc. All rights reserved.
- * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2013 Samsung Electronics. 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 DOMWindowTimers_h
-#define DOMWindowTimers_h
+#ifndef ParentNode_h
+#define ParentNode_h
 
-#include "wtf/Forward.h"
+#include "core/dom/ContainerNode.h"
 
 namespace WebCore {
 
-class EventTarget;
-class ScheduledAction;
+class ParentNode {
+public:
+    static PassRefPtr<HTMLCollection> children(ContainerNode* node)
+    {
+        return node->children();
+    }
 
-namespace DOMWindowTimers {
-int setTimeout(EventTarget*, PassOwnPtr<ScheduledAction>, int timeout);
-int setInterval(EventTarget*, PassOwnPtr<ScheduledAction>, int timeout);
-void clearTimeout(EventTarget*, int timeoutId);
-void clearInterval(EventTarget*, int timeoutId);
-}
+    static Element* firstElementChild(ContainerNode* node)
+    {
+        return node->firstElementChild();
+    }
+
+    static Element* lastElementChild(ContainerNode* node)
+    {
+        return node->lastElementChild();
+    }
+
+    static unsigned childElementCount(ContainerNode* node)
+    {
+        return node->childElementCount();
+    }
+};
 
 } // namespace WebCore
 
-#endif // DOMWindowTimers_h
+#endif // ParentNode_h