Migrate block 163 to Dart 2.0.

tests/language_2/type_variable_promotion_test.dart

Index: tests/language_2/type_variable_promotion_test.dart
diff --git a/tests/language_strong/type_variable_promotion_test.dart b/tests/language_2/type_variable_promotion_test.dart
similarity index 89%
rename from tests/language_strong/type_variable_promotion_test.dart
rename to tests/language_2/type_variable_promotion_test.dart
index 6be5df7dcecac24fb547082fe69bed52c5c9371d..42e8454b6c52b9ed4be66fb65159fc41a8d71ca0 100644
--- a/tests/language_strong/type_variable_promotion_test.dart
+++ b/tests/language_2/type_variable_promotion_test.dart
@@ -30,6 +30,6 @@ class Foo<T extends A> {
 main() {
   var foo = new Foo<B>();
   var b = new B();
-  Expect.equals(foo.foo(b), 'List<B>');
-  Expect.listEquals(foo.bar(b), [b]);
+  Expect.equals('List<B>', foo.foo(b));
+  Expect.listEquals([b], foo.bar(b));
 }