Split NonDocumentTypeChildNode from ChildNode

Source/core/dom/NonDocumentTypeChildNode.h

Index: Source/core/dom/NonDocumentTypeChildNode.h
diff --git a/Source/core/dom/ChildNode.h b/Source/core/dom/NonDocumentTypeChildNode.h
similarity index 72%
copy from Source/core/dom/ChildNode.h
copy to Source/core/dom/NonDocumentTypeChildNode.h
index 749e4be02c0cedf766a7261389ef1a7bd734a668..24ce87a7e5f886da12aac46ffe0243072f4eb7d1 100644
--- a/Source/core/dom/ChildNode.h
+++ b/Source/core/dom/NonDocumentTypeChildNode.h
@@ -2,15 +2,15 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef ChildNode_h
-#define ChildNode_h
+#ifndef NonDocumentTypeChildNode_h
+#define NonDocumentTypeChildNode_h
 
 #include "core/dom/ElementTraversal.h"
 #include "core/dom/Node.h"
 
 namespace blink {
 
-class ChildNode {
+class NonDocumentTypeChildNode {
 public:
     static Element* previousElementSibling(Node& node)
     {
@@ -21,13 +21,8 @@ public:
     {
         return ElementTraversal::nextSibling(node);
     }
-
-    static void remove(Node& node, ExceptionState& exceptionState)
-    {
-        return node.remove(exceptionState);
-    }
 };
 
 } // namespace blink
 
-#endif // ChildNode_h
+#endif // NonDocumentTypeChildNode_h