Generated front_end/testcases/inference test files from Analyzer tests.

pkg/front_end/testcases/inference/async_closure_return_type_flatten.dart

Index: pkg/front_end/testcases/inference/async_closure_return_type_flatten.dart
diff --git a/pkg/front_end/testcases/inference/async_closure_return_type_flatten.dart b/pkg/front_end/testcases/inference/async_closure_return_type_flatten.dart
new file mode 100644
index 0000000000000000000000000000000000000000..d7a26f08bd08518a36fc5ac2fa61bd0777668e8a
--- /dev/null
+++ b/pkg/front_end/testcases/inference/async_closure_return_type_flatten.dart
@@ -0,0 +1,14 @@
+// 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 file.
+
+/*@testedFeatures=inference*/
+library test;
+
+import 'dart:async';
+
+Future<int> futureInt = null;
+var /*@topType=() → Future<int>*/ f = /*@returnType=Future<int>*/ () =>
+    futureInt;
+var /*@topType=() → Future<int>*/ g = /*@returnType=Future<int>*/ () async =>
+    futureInt;