Wrapping leaf nodes in non polymer elements

runtime/observatory/lib/src/models/repository.dart

Index: runtime/observatory/lib/src/models/repository.dart
diff --git a/tests/compiler/dart2js/serialization/compilation4_test.dart b/runtime/observatory/lib/src/models/repository.dart
similarity index 55%
copy from tests/compiler/dart2js/serialization/compilation4_test.dart
copy to runtime/observatory/lib/src/models/repository.dart
index 7e2dc7cba91f780140e12f126e6acc4fcca01d65..309a83eb15850e0aaa48d429740b343894c516df 100644
--- a/tests/compiler/dart2js/serialization/compilation4_test.dart
+++ b/runtime/observatory/lib/src/models/repository.dart
@@ -2,11 +2,10 @@
 // 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 dart2js.serialization.compilation4_test;
+part of models;
 
-import 'compilation_test_helper.dart' as test;
-import 'test_data.dart';
-
-main() {
-  test.main(['${3 * TESTS.length ~/ 4}']);
+abstract class Repository<ObjectT, DescriptorT> {
+  Future<ObjectT> get(DescriptorT id);
 }
+
+abstract class ScriptRepository extends Repository<Script, String> {}