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

pkg/front_end/testcases/inference/future_then_explicit_future.dart

+// 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";
+
+m1() {
+  Future<int> f;
+  var /*@type=Future<List<int>>*/ x = /*@promotedType=none*/ f
+      .then<Future<List<int>>>(/*error:ARGUMENT_TYPE_NOT_ASSIGNABLE*/
+          /*@returnType=List<int>*/ (/*@type=int*/ x) => /*@typeArgs=int*/ []);
+  Future<List<int>> y = /*@promotedType=none*/ x;
+}
+
+m2() {
+  Future<int> f;
+  var /*@type=Future<List<int>>*/ x = /*@promotedType=none*/ f.then<List<int>>(
+      /*@returnType=List<int>*/ (/*@type=int*/ x) => /*@typeArgs=int*/ []);
+  Future<List<int>> y = /*@promotedType=none*/ x;
+}