Add failing (for dart2js) deferred constant-list test.

tests/language/deferred_constant_list_test.dart

Index: tests/language/deferred_constant_list_test.dart
diff --git a/tests/lib/mirrors/deferred_mirrors_metatarget_test.dart b/tests/language/deferred_constant_list_test.dart
similarity index 68%
copy from tests/lib/mirrors/deferred_mirrors_metatarget_test.dart
copy to tests/language/deferred_constant_list_test.dart
index f0091c8f328d38d2d0b016f9512670f0f6253dcf..ec3dc10fc86dcd937fceb439c596795f8e13be89 100644
--- a/tests/lib/mirrors/deferred_mirrors_metatarget_test.dart
+++ b/tests/language/deferred_constant_list_test.dart
@@ -2,17 +2,16 @@
 // 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 metaTargets can be reached via the mirrorSystem.
-
-import 'package:async_helper/async_helper.dart';
 import 'package:expect/expect.dart';
+import 'package:async_helper/async_helper.dart';
 
-import "deferred_mirrors_metatarget_lib.dart" deferred as lib;
+import "deferred_constant_list_lib.dart" deferred as lib;
 
 void main() {
   asyncStart();
   lib.loadLibrary().then((_) {
-    Expect.equals("A", lib.foo());
+    Expect.equals("[1, 2]", lib.finalConstList.toString());
+    Expect.equals("[3, 4]", lib.nonFinalConstList.toString());
     asyncEnd();
   });
 }