Change new List(n) to return fixed length list.

tests/corelib/linked_hash_map_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.
 
 // Dart test for linked hash-maps.
 library linkedHashMap.test;
 import 'dart:collection' show LinkedHashMap;
 
 class LinkedHashMapTest {
   static void testMain() {
     Map map = new LinkedHashMap();
     map["a"] = 1;
     map["b"] = 2;
     map["c"] = 3;
     map["d"] = 4;
     map["e"] = 5;
 
-    List<String> keys = new List<String>.fixedLength(5);
-    List<int> values = new List<int>.fixedLength(5);
+    List<String> keys = new List<String>(5);
+    List<int> values = new List<int>(5);
 
     int index;
 
     clear() {
       index = 0;
       for (int i = 0; i < keys.length; i++) {
         keys[i] = null;
         values[i] = null;
       }
     }
@@ skipping 76 matching lines @@
 
     clear();
     map.values.forEach(testForEachValue);
     verifyValues(valuesAfterAUpdate);
   }
 }
 
 main() {
   LinkedHashMapTest.testMain();
 }