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

tests/isolate/multiple_timer_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 multiple_timer_test;
 
 import 'dart:async';
 import '../../pkg/unittest/lib/unittest.dart';
 
 const Duration TIMEOUT1 = const Duration(seconds: 1);
@@ skipping 39 matching lines @@
 
     void timeoutHandler4() {
       // The stopwatch is more precise than the Timer. It can happen that
       // the TIMEOUT triggers *slightly* too early.
       expect(_stopwatch4.elapsedMilliseconds + 1,
              greaterThanOrEqualTo(TIMEOUT4.inMilliseconds));
       expect(_order[_message], 3);
       _message++;
     }
 
-    _order = new List<int>.fixedLength(4);
+    _order = new List<int>(4);
     _order[0] = 2;
     _order[1] = 0;
     _order[2] = 3;
     _order[3] = 1;
     _message = 0;
 
     _stopwatch1.start();
     new Timer(TIMEOUT1, expectAsync0(timeoutHandler1));
     _stopwatch2.start();
     new Timer(TIMEOUT2, expectAsync0(timeoutHandler2));
     _stopwatch3.start();
     new Timer(TIMEOUT3, expectAsync0(timeoutHandler3));
     _stopwatch4.start();
     new Timer(TIMEOUT4, expectAsync0(timeoutHandler4));
   });
 }