Wrapping leaf nodes in non polymer elements

runtime/observatory/lib/src/mocks/repositories/script.dart

Index: runtime/observatory/lib/src/mocks/repositories/script.dart
diff --git a/runtime/observatory/lib/src/mocks/repositories/script.dart b/runtime/observatory/lib/src/mocks/repositories/script.dart
new file mode 100644
index 0000000000000000000000000000000000000000..7ab91142f1aca5134fa145d4d73443b62935d40d
--- /dev/null
+++ b/runtime/observatory/lib/src/mocks/repositories/script.dart
@@ -0,0 +1,19 @@
+// 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.
+
+part of mocks;
+
+class ScriptRepositoryMock implements M.ScriptRepository {
+  final Map<String, M.Script> scripts;
+
+  bool _invoked = false;
+  bool get invoked => _invoked;
+
+  ScriptRepositoryMock(this.scripts);
+
+  Future<M.Script> get(String id) async {
+    _invoked = true;
+    return scripts[id];
+  }
+}