Drop [LegacyImplementedInBaseClass] from ParentNode interface

Source/core/dom/ParentNode.h

Index: Source/core/dom/ParentNode.h
diff --git a/Source/core/page/DOMWindowTimers.h b/Source/core/dom/ParentNode.h
similarity index 73%
copy from Source/core/page/DOMWindowTimers.h
copy to Source/core/dom/ParentNode.h
index 2a28f81810c751f9331f6f421d0c0d57a87b7813..9fb949a35b0aefb308f11af7253806ad7167cbe8 100644
--- a/Source/core/page/DOMWindowTimers.h
+++ b/Source/core/dom/ParentNode.h
@@ -1,6 +1,4 @@
 /*
- * 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
@@ -30,23 +28,36 @@
  * 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