Replaced Element.append with Node.appendChild

tools/dom/templates/html/impl/impl_Node.darttemplate

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 part of $LIBRARYNAME;
 
 /**
  * Lazy implementation of the child nodes of an element that does not request
  * the actual child nodes of an element until strictly necessary greatly
  * improving performance for the typical cases where it is not required.
@@ skipping 42 matching lines @@
 
   Node min([int compare(Node a, Node b)]) {
     return IterableMixinWorkaround.min(this, compare);
   }
 
   Node max([int compare(Node a, Node b)]) {
     return IterableMixinWorkaround.max(this, compare);
   }
 
   void add(Node value) {
-    _this.$dom_appendChild(value);
+    _this.append(value);
   }
 
   void addLast(Node value) {
-    _this.$dom_appendChild(value);
+    _this.append(value);
   }
 
 
   void addAll(Iterable<Node> iterable) {
     if (iterable is _ChildNodeListLazy) {
       if (!identical(iterable._this, _this)) {
         // Optimized route for copying between nodes.
         for (var i = 0, len = iterable.length; i < len; ++i) {
           // Should use $dom_firstChild, Bug 8886.
-          _this.$dom_appendChild(iterable[0]);
+          _this.append(iterable[0]);
         }
       }
       return;
     }
     for (Node node in iterable) {
-      _this.$dom_appendChild(node);
+      _this.append(node);
     }
   }
 
   Node removeLast() {
     final result = last;
     if (result != null) {
       _this.$dom_removeChild(result);
     }
     return result;
   }
@@ skipping 162 matching lines @@
   List<Node> get nodes {
     return new _ChildNodeListLazy(this);
   }
 
   void set nodes(Collection<Node> value) {
     // Copy list first since we don't want liveness during iteration.
     // TODO(jacobr): there is a better way to do this.
     List copy = new List.from(value);
     text = '';
     for (Node node in copy) {
-      $dom_appendChild(node);
+      append(node);
     }
   }
 
   /**
    * Removes this node from the DOM.
    */
   @DomName('Node.removeChild')
   void remove() {
     // TODO(jacobr): should we throw an exception if parent is already null?
     // TODO(vsm): Use the native remove when available.
@@ skipping 37 matching lines @@
       }
     } else {
       for (var node in newNodes) {
         this.insertBefore(node, refChild);
       }
     }
   }
 
 $!MEMBERS
 }