Partially migrate from old getter syntax to new one.

lib/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.
 
 /**
  * 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.
  */
 class _ChildNodeListLazy implements NodeList {
   final _NodeImpl _this;
 
   _ChildNodeListLazy(this._this);
 
 
 $if DART2JS
-  _NodeImpl get first() => JS('_NodeImpl', '#.firstChild', _this);
+  _NodeImpl get first => JS('_NodeImpl', '#.firstChild', _this);
   _NodeImpl last() => JS('_NodeImpl', '#.lastChild', _this);
 $else
-  _NodeImpl get first() => _this.$dom_firstChild;
+  _NodeImpl get first => _this.$dom_firstChild;
   _NodeImpl last() => _this.$dom_lastChild;
 $endif
 
   void add(_NodeImpl value) {
     _this.$dom_appendChild(value);
   }
 
   void addLast(_NodeImpl value) {
     _this.$dom_appendChild(value);
   }
@@ skipping 65 matching lines @@
     throw new UnsupportedOperationException(
         "Cannot insertRange on immutable List.");
   }
   NodeList getRange(int start, int rangeLength) =>
     new _NodeListWrapper(_Lists.getRange(this, start, rangeLength, <Node>[]));
 
   // -- end List<Node> mixins.
 
   // TODO(jacobr): benchmark whether this is more efficient or whether caching
   // a local copy of $dom_childNodes is more efficient.
-  int get length() => _this.$dom_childNodes.length;
+  int get length => _this.$dom_childNodes.length;
 
   _NodeImpl operator[](int index) => _this.$dom_childNodes[index];
 }
 
 class $CLASSNAME$EXTENDS$IMPLEMENTS$NATIVESPEC {
-  _ChildNodeListLazy get nodes() {
+  _ChildNodeListLazy 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) {
       $dom_appendChild(node);
@@ skipping 14 matching lines @@
       final _NodeImpl parent = this.parent;
       parent.$dom_replaceChild(otherNode, this);
     } catch (e) {
 
     };
     return this;
   }
 
 $!MEMBERS
 }