Hide isXXX() type checking methods in subclasses

Source/core/dom/ContainerNode.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2009, 2010, 2011, 2013 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.
@@ skipping 168 matching lines @@
     ContainerNode(TreeScope*, ConstructionType = CreateContainer);
 
 #if !ENABLE(OILPAN)
     void removeDetachedChildren();
 #endif
 
     void setFirstChild(Node* child) { m_firstChild = child; }
     void setLastChild(Node* child) { m_lastChild = child; }
 
 private:
+    bool isContainerNode() const WTF_DELETED_FUNCTION; // Hide to catch useless calls.
+    bool isTextNode() const WTF_DELETED_FUNCTION; // Hide to catch useless calls.
+
     void removeBetween(Node* previousChild, Node* nextChild, Node& oldChild);
     void insertBeforeCommon(Node& nextChild, Node& oldChild);
     void appendChildCommon(Node& child);
     void updateTreeAfterInsertion(Node& child);
     void willRemoveChildren();
     void willRemoveChild(Node& child);
     void removeDetachedChildrenInContainer(ContainerNode&);
     void addChildNodesToDeletionQueue(Node*&, Node*&, ContainerNode&);
 
     void notifyNodeInsertedInternal(Node&, NodeVector& postInsertionNotificationTargets);
@@ skipping 120 matching lines @@
 inline void getChildNodes(Node& node, NodeVector& nodes)
 {
     ASSERT(!nodes.size());
     for (Node* child = node.firstChild(); child; child = child->nextSibling())
         nodes.append(child);
 }
 
 } // namespace blink
 
 #endif // ContainerNode_h