Make getKeys, getValues getters (keys, values).

tests/html/localstorage_test.dart

 // 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.
 
 #library('LocalStorageTest');
 #import('../../pkg/unittest/unittest.dart');
 #import('../../pkg/unittest/html_config.dart');
 #import('dart:html');
 
 main() {
@@ skipping 69 matching lines @@
   testWithLocalStorage('forEach', () {
     Map<String, String> results = {};
     window.localStorage.forEach((k, v) {
       results[k] = v;
     });
     Expect.mapEquals({'key1': 'val1', 'key2': 'val2', 'key3': 'val3'},
         results);
   });
 
   testWithLocalStorage('getKeys', () {
-    Expect.setEquals(['key1', 'key2', 'key3'], window.localStorage.getKeys());
+    Expect.setEquals(['key1', 'key2', 'key3'], window.localStorage.keys);
   });
 
   testWithLocalStorage('getVals', () {
     Expect.setEquals(['val1', 'val2', 'val3'],
-        window.localStorage.getValues());
+        window.localStorage.values);
   });
 
   testWithLocalStorage('length', () {
     Expect.equals(3, window.localStorage.length);
     window.localStorage.clear();
     Expect.equals(0, window.localStorage.length);
   });
 
   testWithLocalStorage('isEmpty', () {
     Expect.isFalse(window.localStorage.isEmpty);
     window.localStorage.clear();
     Expect.isTrue(window.localStorage.isEmpty);
   });
 }