Wrapping leaf nodes in non polymer elements

runtime/observatory/lib/src/models/objects/instance.dart

Index: runtime/observatory/lib/src/models/objects/instance.dart
diff --git a/tests/language/export_not_shadowed_by_prefix_helper2.dart b/runtime/observatory/lib/src/models/objects/instance.dart
similarity index 56%
copy from tests/language/export_not_shadowed_by_prefix_helper2.dart
copy to runtime/observatory/lib/src/models/objects/instance.dart
index ae2dca5fcf0a4842b29e20d7652b35b6bfd65cfc..b337f790fc2582ced810c140bb9e8c9fcc357813 100644
--- a/tests/language/export_not_shadowed_by_prefix_helper2.dart
+++ b/runtime/observatory/lib/src/models/objects/instance.dart
@@ -1,9 +1,7 @@
 // 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.
+// BSD-style license that can be found in the LICENSE file
 
-void f() {
-  f_called = true;
-}
+part of models;
 
-bool f_called = false;
+abstract class InstanceRef extends ObjectRef {}