Deal with deferred loading in the VM mirrors.

tests/lib/mirrors/deferred_type_test.dart

Index: tests/lib/mirrors/deferred_type_test.dart
diff --git a/tests/lib/mirrors/deferred_type_test.dart b/tests/lib/mirrors/deferred_type_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..2681f69e75b7875c193d40539a344355790768d8
--- /dev/null
+++ b/tests/lib/mirrors/deferred_type_test.dart
@@ -0,0 +1,18 @@
+// Copyright (c) 2015, 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 deferred_type;
+
+import 'dart:mirrors';
+import 'package:expect/expect.dart';
+import 'package:async_helper/async_helper.dart';
+
+import 'deferred_type_other.dart' deferred as other;
+
+bad(other.DeferredType x) {}
+
+main() {
+  print((reflect(bad) as ClosureMirror).function.parameters[0].type);
+  throw "Should have died sooner. other.DeferredType is not loaded";
+}