Add mirrors tests

test/codegen/lib/mirrors/metadata_class_mirror_test.dart

 // Copyright (c) 2014, 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.
 
-// SharedOptions=--enable-enum
+// Regression test for http://dartbug.com/19173
 
 import 'dart:mirrors';
 
-import 'package:expect/expect.dart';
+class A {
+    const A();
+}
 
-enum Foo { BAR, BAZ }
+@deprecated
+const A anA = const A();
 
 main() {
-  Expect.equals('Foo.BAR', Foo.BAR.toString());
-  var name = reflect(Foo.BAR).invoke(#toString, []).reflectee;
-  Expect.equals('Foo.BAR', name);
+  ClassMirror typeMirror = reflectType(A);
+  var decs = typeMirror.declarations;
+  print(decs.length);
 }