First step for modular output in fasta.

pkg/front_end/testcases/shaker/include_field_type2.dart

Index: pkg/front_end/testcases/shaker/include_field_type2.dart
diff --git a/pkg/front_end/testcases/shaker/include_field_type2.dart b/pkg/front_end/testcases/shaker/include_field_type2.dart
new file mode 100644
index 0000000000000000000000000000000000000000..5f66e6dd656f2cedd5352d0578dd92c4538563c9
--- /dev/null
+++ b/pkg/front_end/testcases/shaker/include_field_type2.dart
@@ -0,0 +1,8 @@
+// Copyright (c) 2017, 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.md file.
+
+import 'lib/lib.dart';
+
+// @@RETAIN_MEMBERS_OF_CLASSES@@ - F.field and it's type should be preserved
+foo(F x) => null;