New tests for initializing formal access.

tests/language/initializing_formal_capture_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.
+//
+// DartOptions=--initializing-formal-access
 
 import "package:expect/expect.dart";
 
-class A<T> {}
-
-class C<T> {
-  a() {
-    return () => new A<T>();
-  }
+class A {
+  var x, y;
+  A(this.x) : y = (() => x);
 }
 
 main() {
-  Expect.isTrue(new C<int>().a()() is A<int>);
-  Expect.isFalse(new C<int>().a()() is A<String>);
+  A a = new A(2);
+  a.x = 3;
+  Expect.equals(a.x, 3);
+  Expect.equals(a.y(), 2);
 }