Perform type inference on explicitly typed fields.

pkg/front_end/testcases/inference/subexpressions_of_explicitly_typed_fields.dart

Index: pkg/front_end/testcases/inference/subexpressions_of_explicitly_typed_fields.dart
diff --git a/pkg/front_end/testcases/inference/subexpressions_of_explicitly_typed_fields.dart b/pkg/front_end/testcases/inference/subexpressions_of_explicitly_typed_fields.dart
new file mode 100644
index 0000000000000000000000000000000000000000..38ba514bb881404bfd8625a4fc61331b43b96144
--- /dev/null
+++ b/pkg/front_end/testcases/inference/subexpressions_of_explicitly_typed_fields.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;
+
+class C {
+  List<num> x = /*@typeArgs=num*/ [0];
+}
+
+List<num> y = /*@typeArgs=num*/ [0];
+
+main() {}