Merge the work on Generic Types Reification from 'dart-lang/reify' repo

pkg/kernel/testcases/reify/field_initializer2_test.dart

+// Copyright (c) 2016, 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.
+
+library field_initializer2_test;
+
+import 'test_base.dart';
+
+class A<T> {}
+
+class B<T> {
+  var x = new A<T>();
+  var y;
+  B() : y = new A<T>();
+}
+
+main() {
+  var b = new B<A>();
+  expectTrue(b.x is A<A>);
+  expectTrue(b.y is A<A>);
+
+  expectFalse(b.x is A<B>);
+  expectFalse(b.y is A<B>);
+}