Revert "Migrating a block of dart 2:"

tests/language_strong/closure_internals_test.dart

Index: tests/language_strong/closure_internals_test.dart
diff --git a/tests/language_2/closure_internals_test.dart b/tests/language_strong/closure_internals_test.dart
similarity index 62%
rename from tests/language_2/closure_internals_test.dart
rename to tests/language_strong/closure_internals_test.dart
index 61e5b2beb2ed227275b2dc06972b9b48f23db377..587be33970184344841a0c2fa97448ae0605d762 100644
--- a/tests/language_2/closure_internals_test.dart
+++ b/tests/language_strong/closure_internals_test.dart
@@ -10,7 +10,7 @@ class C {
 
 main() {
   var f = new C().foo;
-  var target = f.target; //# 01: compile-time error
-  var self = f.self; //# 02: compile-time error
-  var receiver = f.receiver; //# 03: compile-time error
+  Expect.throws(() => f.target, (e) => e is NoSuchMethodError);
+  Expect.throws(() => f.self, (e) => e is NoSuchMethodError);
+  Expect.throws(() => f.receiver, (e) => e is NoSuchMethodError);
 }