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

pkg/front_end/testcases/inference/downwards_inference_async_await.dart

Index: pkg/front_end/testcases/inference/downwards_inference_async_await.dart
diff --git a/pkg/front_end/testcases/inference/downwards_inference_async_await.dart b/pkg/front_end/testcases/inference/downwards_inference_async_await.dart
new file mode 100644
index 0000000000000000000000000000000000000000..9d81c0239250059d55a32e676e8a631ff7e14ca3
--- /dev/null
+++ b/pkg/front_end/testcases/inference/downwards_inference_async_await.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;
+
+import 'dart:async';
+
+Future test() async {
+  dynamic d;
+  List<int> l0 =
+      await /*@typeArgs=int*/ [/*info:DYNAMIC_CAST*/ /*@promotedType=none*/ d];
+  List<int> l1 = await /*@typeArgs=List<int>*/ new Future.value(
+      /*@typeArgs=dynamic*/ [/*@promotedType=none*/ d]);
+}