Revert "Removing ElementList (splitting out removing NodeList into a separate CL)."

lib/html/templates/html/impl/impl_NodeList.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.
 
 // TODO(nweiz): when all implementations we target have the same name for the
 // coreimpl implementation of List<E>, extend that rather than wrapping.
 class _ListWrapper<E> implements List<E> {
   List _list;
 
   _ListWrapper(List this._list);
@@ skipping 54 matching lines @@
   E get first => _list[0];
 }
 
 /**
  * This class is used to insure the results of list operations are NodeLists
  * instead of lists.
  */
 class _NodeListWrapper extends _ListWrapper<Node> implements NodeList {
   _NodeListWrapper(List list) : super(list);
 
-  List<Node> filter(bool f(Node element)) =>
+  NodeList filter(bool f(Node element)) =>
     new _NodeListWrapper(_list.filter(f));
 
-  List<Node> getRange(int start, int rangeLength) =>
+  NodeList getRange(int start, int rangeLength) =>
     new _NodeListWrapper(_list.getRange(start, rangeLength));
 }
 
 class $CLASSNAME$EXTENDS$IMPLEMENTS$NATIVESPEC {
   _NodeImpl _parent;
 
   // -- start List<Node> mixins.
   // Node is the element type.
 
   // From Iterable<Node>:
@@ skipping 10 matching lines @@
   void add(_NodeImpl value) {
     _parent.$dom_appendChild(value);
   }
 
   void addLast(_NodeImpl value) {
     _parent.$dom_appendChild(value);
   }
 
   void addAll(Collection<_NodeImpl> collection) {
     for (_NodeImpl node in collection) {
-      _parent.$dom_appendChild(node);
+      _parent.$dom_appendChild(node);      
     }
   }
 
   _NodeImpl removeLast() {
     final result = this.last();
     if (result != null) {
       _parent.$dom_removeChild(result);
     }
     return result;
   }
@@ skipping 37 matching lines @@
   // FIXME: implement thesee.
   void setRange(int start, int rangeLength, List<Node> from, [int startFrom]) {
     throw new UnsupportedOperationException("Cannot setRange on immutable List.");
   }
   void removeRange(int start, int rangeLength) {
     throw new UnsupportedOperationException("Cannot removeRange on immutable List.");
   }
   void insertRange(int start, int rangeLength, [Node initialValue]) {
     throw new UnsupportedOperationException("Cannot insertRange on immutable List.");
   }
-  List<Node> getRange(int start, int rangeLength) =>
+  NodeList getRange(int start, int rangeLength) =>
     new _NodeListWrapper(_Lists.getRange(this, start, rangeLength, <Node>[]));
 
   // -- end List<Node> mixins.
 
 $!MEMBERS
 }