Handle metadata in the magic [^] property of class descriptions correctly.

tests/lib/mirrors/metadata_class_mirror_test.dart

Index: tests/lib/mirrors/metadata_class_mirror_test.dart
diff --git a/tests/lib/mirrors/runtime_type_test.dart b/tests/lib/mirrors/metadata_class_mirror_test.dart
similarity index 52%
copy from tests/lib/mirrors/runtime_type_test.dart
copy to tests/lib/mirrors/metadata_class_mirror_test.dart
index fd446d32b0b8db6da48163ebc0020d62f4c831db..82aeee76af68de852e0403d6ce2edbaa4b442fc8 100644
--- a/tests/lib/mirrors/runtime_type_test.dart
+++ b/tests/lib/mirrors/metadata_class_mirror_test.dart
@@ -2,19 +2,19 @@
 // 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 test.runtime_type_test;
+// Regression test for http://dartbug.com/19173
 
-@MirrorsUsed(targets: 'test.runtime_type_test', override: '*')
 import 'dart:mirrors';
 
-import 'package:expect/expect.dart';
-
-class A {}
-
-class B {
-  get runtimeType => A;
+class A {
+    const A();
 }
 
+@deprecated
+const A anA = const A();
+
 main() {
-  Expect.equals(reflect(new B()).type, reflectClass(B));
+  ClassMirror typeMirror = reflectType(A);
+  var decs = typeMirror.declarations;
+  print(decs.length);
 }