Re-introduce corrupted type inference tests.

pkg/front_end/testcases/inference/unsafe_block_closure_inference_function_call_explicit_type_param_via_expr2.dart

Index: pkg/front_end/testcases/inference/unsafe_block_closure_inference_function_call_explicit_type_param_via_expr2.dart
diff --git a/pkg/front_end/testcases/inference/unsafe_block_closure_inference_function_call_explicit_type_param_via_expr2.dart b/pkg/front_end/testcases/inference/unsafe_block_closure_inference_function_call_explicit_type_param_via_expr2.dart
new file mode 100644
index 0000000000000000000000000000000000000000..d9bf6c6c81ed93f24f61207eb13f799a85ac22f8
--- /dev/null
+++ b/pkg/front_end/testcases/inference/unsafe_block_closure_inference_function_call_explicit_type_param_via_expr2.dart
@@ -0,0 +1,16 @@
+// 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;
+
+List<T> f<T>(T g()) => <T>[g()];
+var /*@topType=dynamic*/ v =
+    (f)<int>(/*info:INFERRED_TYPE_CLOSURE*/ /*@returnType=int*/ () {
+  return 1;
+});
+
+main() {
+  v;
+}