Morph the APIs for Node, ParentNode, and Element closer to the specs

sky/engine/core/editing/RemoveNodePreservingChildrenCommand.cpp

 /*
  * Copyright (C) 2005, 2008 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 25 matching lines @@
     , m_node(node)
     , m_shouldAssumeContentIsAlwaysEditable(shouldAssumeContentIsAlwaysEditable)
 {
     ASSERT(m_node);
 }
 
 void RemoveNodePreservingChildrenCommand::doApply()
 {
     if (m_node->isContainerNode()) {
         NodeVector children;
-        getChildNodes(toContainerNode(*m_node), children);
+        appendChildNodes(toContainerNode(*m_node), children);
 
         size_t size = children.size();
         for (size_t i = 0; i < size; ++i) {
             RefPtr<Node> child = children[i].release();
             removeNode(child, m_shouldAssumeContentIsAlwaysEditable);
             insertNodeBefore(child.release(), m_node, m_shouldAssumeContentIsAlwaysEditable);
         }
     }
     removeNode(m_node, m_shouldAssumeContentIsAlwaysEditable);
 }
 
 }