Add mirrors tests

test/codegen/lib/mirrors/static_const_field_test.dart

 // Copyright (c) 2013, 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.
 
+// Test that static const fields are accessible by reflection.
+// Regression test for http://dartbug.com/23811.
+
+@MirrorsUsed(targets: const [A])
+import "dart:mirrors";
 import "package:expect/expect.dart";
 
 class A {
-  foo() {}
-  bar() {}
-}
-
-class B {
-  var x;
-  final y;
-
-  B(a) : x = a..foo()..bar(), y = a..foo()..bar() {}
+  static const ONE = 1;
 }
 
 main() {
-  var a = new A(), b = new B(a);
-  Expect.equals(a, b.x);
-  Expect.equals(a, b.y);
-}  
+  Expect.equals(1, reflectClass(A).getField(#ONE).reflectee);
+}