Make first and last getters.

tests/html/node_test.dart

 // Copyright (c) 2011, 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.
 
 #library('NodeTest');
 #import('../../pkg/unittest/unittest.dart');
 #import('../../pkg/unittest/html_config.dart');
 #import('dart:html');
 
 Node makeNode() => new Element.tag('div');
@@ skipping 38 matching lines @@
       Expect.isTrue(makeNodeWithChildren().nodes is List<Node>);
     });
 
     test('first', () {
       var node = makeNodeWithChildren();
       Expect.isTrue(node.nodes.first is Text);
     });
 
     test('last', () {
       var node = makeNodeWithChildren();
-      Expect.isTrue(node.nodes.last() is Comment);
+      Expect.isTrue(node.nodes.last is Comment);
     });
 
     test('forEach', () {
       var nodes = [];
       var node = makeNodeWithChildren();
       node.nodes.forEach((n) => nodes.add(n));
       Expect.isTrue(nodes[0] is Text);
       Expect.isTrue(nodes[1] is BRElement);
       Expect.isTrue(nodes[2] is Comment);
     });
@@ skipping 38 matching lines @@
       var node = makeNodeWithChildren();
       node.nodes[1] = new Element.tag('hr');
       Expect.isTrue(node.nodes[0] is Text);
       Expect.isTrue(node.nodes[1] is HRElement);
       Expect.isTrue(node.nodes[2] is Comment);
     });
 
     test('add', () {
       var node = makeNode();
       node.nodes.add(new Element.tag('hr'));
-      Expect.isTrue(node.nodes.last() is HRElement);
+      Expect.isTrue(node.nodes.last is HRElement);
     });
 
     test('addLast', () {
       var node = makeNode();
       node.nodes.addLast(new Element.tag('hr'));
-      Expect.isTrue(node.nodes.last() is HRElement);
+      Expect.isTrue(node.nodes.last is HRElement);
     });
 
     test('iterator', () {
       var nodes = [];
       var node = makeNodeWithChildren();
       for (var subnode in node.nodes) {
         nodes.add(subnode);
       }
       Expect.isTrue(nodes[0] is Text);
       Expect.isTrue(nodes[1] is BRElement);
@@ skipping 52 matching lines @@
     });
 
     test('getRange', () {
       var range = makeNodeList().getRange(1, 2);
       Expect.isTrue(range is List<Node>);
       Expect.isTrue(range[0] is BRElement);
       Expect.isTrue(range[1] is Comment);
     });
   });
 }