Migrated test block 220 to Dart 2.0.

tests/lib_strong/mirrors/generic_local_function_test.dart

-// Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
-// 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.
-
-library test.generic_function_typedef;
-
-import 'dart:mirrors';
-
-import 'package:expect/expect.dart';
-
-import 'generics_helper.dart';
-
-class C<T> {
-  makeClosure1() {
-    T closure1(T t) {}
-    return closure1;
-  }
-
-  makeClosure2() {
-    enclosing() {
-      T closure2(T t) {}
-      return closure2;
-    }
-
-    ;
-    return enclosing();
-  }
-}
-
-main() {
-  ClosureMirror closure1 = reflect(new C<String>().makeClosure1());
-  Expect.equals(reflectClass(String), closure1.function.returnType);
-  Expect.equals(reflectClass(String), closure1.function.parameters[0].type);
-
-  ClosureMirror closure2 = reflect(new C<String>().makeClosure2());
-  Expect.equals(reflectClass(String), closure2.function.returnType);
-  Expect.equals(reflectClass(String), closure2.function.parameters[0].type);
-}