Load deferred chunks in the right order.

tests/lib/async/deferred/deferred_api_test.dart

-// Copyright (c) 2013, 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.
-
-// Test that that the basic API for deferred/lazy loading works.  This
-// test deliberately does not test that the deferred elements throw a
-// NoSuchMethodError before the deferred library is loaded.  This
-// makes it possible to pass this test without having implemented
-// deferred loading correctly.
-
-import "package:expect/expect.dart";
-import 'dart:async';
-
-@lazy
-import 'deferred_api_library.dart' as lib;
-
-const lazy = const DeferredLibrary('deferred_api_library');
-
-main() {
-  print('unittest-suite-wait-for-done');
-
-  int counter = 0;
-  lazy.load().then((bool didLoad) {
-    Expect.isTrue(didLoad);
-    Expect.equals(1, ++counter);
-    Expect.equals(42, lib.foo('b'));
-    print('lazy was loaded');
-  });
-  Expect.equals(0, counter);
-  lazy.load().then((bool didLoad) {
-    Expect.isFalse(didLoad);
-    Expect.equals(2, ++counter);
-    Expect.equals(42, lib.foo('b'));
-    print('lazy was loaded');
-    print('unittest-suite-success');
-  });
-  Expect.equals(0, counter);
-}