Partially migrate from old getter syntax to new one.

lib/dom/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);
 
   Iterator<E> iterator() => _list.iterator();
 
   void forEach(void f(E element)) => _list.forEach(f);
 
   Collection map(f(E element)) => _list.map(f);
 
   List<E> filter(bool f(E element)) => _list.filter(f);
 
   bool every(bool f(E element)) => _list.every(f);
 
   bool some(bool f(E element)) => _list.some(f);
 
   bool isEmpty() => _list.isEmpty();
 
-  int get length() => _list.length;
+  int get length => _list.length;
 
   E operator [](int index) => _list[index];
 
   void operator []=(int index, E value) { _list[index] = value; }
 
   void set length(int newLength) { _list.length = newLength; }
 
   void add(E value) => _list.add(value);
 
   void addLast(E value) => _list.addLast(value);
@@ skipping 18 matching lines @@
 
   void setRange(int start, int rangeLength, List<E> from, [int startFrom = 0])
       => _list.setRange(start, rangeLength, from, startFrom);
 
   void removeRange(int start, int rangeLength) =>
     _list.removeRange(start, rangeLength);
 
   void insertRange(int start, int rangeLength, [E initialValue = null]) =>
     _list.insertRange(start, rangeLength, initialValue);
 
-  E get first() => _list[0];
+  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);
 
   NodeList filter(bool f(Node element)) =>
@@ skipping 69 matching lines @@
     throw new UnsupportedOperationException("Cannot sort immutable List.");
   }
 
   int indexOf(Node element, [int start = 0]) =>
       _Lists.indexOf(this, element, start, this.length);
 
   int lastIndexOf(Node element, [int start = 0]) =>
       _Lists.lastIndexOf(this, element, start);
 
   Node last() => this[length - 1];
-  Node get first() => this[0];
+  Node get first => this[0];
 
   // 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.");
   }
   NodeList getRange(int start, int rangeLength) =>
     new _NodeListWrapper(_Lists.getRange(this, start, rangeLength, <Node>[]));
 
   // -- end List<Node> mixins.
 
 $!MEMBERS
 }