Introduces the new syntax for deferred loading

tests/language/deferred_closurize_load_library_test.dart

Index: tests/language/deferred_closurize_load_library_test.dart
diff --git a/tests/compiler/dart2js_extra/deferred/deferred_constant2_test.dart b/tests/language/deferred_closurize_load_library_test.dart
similarity index 58%
copy from tests/compiler/dart2js_extra/deferred/deferred_constant2_test.dart
copy to tests/language/deferred_closurize_load_library_test.dart
index cb67911a8d038faa6105ae73375fb5489ab01b32..c910ce86fb6c1f5c3485a5137faf2da31bc8c432 100644
--- a/tests/compiler/dart2js_extra/deferred/deferred_constant2_test.dart
+++ b/tests/language/deferred_closurize_load_library_test.dart
@@ -2,20 +2,18 @@
 // 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.
 
-import 'package:async_helper/async_helper.dart';
 import 'package:expect/expect.dart';
+import 'package:async_helper/async_helper.dart';
 
-import 'dart:async';
-
-@lazy import 'deferred_class_library2.dart' as lib;
-
-const lazy = const DeferredLibrary('deferred_class_library2');
+// This library contains a member loadLibrary.
+// Check that we shadow this member.
+import "deferred_closurize_load_library_lib.dart" deferred as lib;
 
-main() {
+void main() {
+  var x = lib.loadLibrary;
   asyncStart();
-  lazy.load().then((bool didLoad) {
-    Expect.isTrue(didLoad);
-    Expect.equals(499, lib.C1.value);
+  x().then((_) {
+    Expect.isTrue(lib.trueVar);
     asyncEnd();
   });
 }