Migrate block 163 to Dart 2.0.

tests/language_2/unresolved_top_level_method_test.dart

Index: tests/language_2/unresolved_top_level_method_test.dart
diff --git a/tests/language_strong/unresolved_top_level_method_negative_test.dart b/tests/language_2/unresolved_top_level_method_test.dart
similarity index 64%
rename from tests/language_strong/unresolved_top_level_method_negative_test.dart
rename to tests/language_2/unresolved_top_level_method_test.dart
index 2fc13cb421c8688cf16e7aa08aa35739e8fe16c9..1aa0503549d3adacba727cb411475fcc32839a4a 100644
--- a/tests/language_strong/unresolved_top_level_method_negative_test.dart
+++ b/tests/language_2/unresolved_top_level_method_test.dart
@@ -2,10 +2,10 @@
 // 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 an unresolved method call at the top level does not crash
-// the parser.
+// Test that an unresolved method call at the top level creates a compile-
+// time error.
 
-var a = b();
+var a = b(); /*@compile-error=unspecified*/
 
 main() {
   print(a);