Migrate block 163 to Dart 2.0.

tests/language_2/unresolved_default_constructor_test.dart

Index: tests/language_2/unresolved_default_constructor_test.dart
diff --git a/tests/language_strong/unresolved_default_constructor_test.dart b/tests/language_2/unresolved_default_constructor_test.dart
similarity index 67%
rename from tests/language_strong/unresolved_default_constructor_test.dart
rename to tests/language_2/unresolved_default_constructor_test.dart
index 1b0a66c52a9c097c567152438eed71557a8f2587..7d9301bb981a7239b57ed23cc6a3ebeccec720aa 100644
--- a/tests/language_strong/unresolved_default_constructor_test.dart
+++ b/tests/language_2/unresolved_default_constructor_test.dart
@@ -2,8 +2,7 @@
 // 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 unresolved default constructor calls remain unresolved after dart2dart
-// translation.
+// Test unresolved default constructor calls cause compilation errors.
 
 import 'package:expect/expect.dart';
 
@@ -14,5 +13,5 @@ class A {
 
 main() {
   A.method();
-  Expect.throws(() => new A()); //# 01: static type warning
+  Expect.throws(() => new A()); //# 01: compile-time error
 }