Converted Observatory class-tree element

runtime/observatory/lib/src/repositories/instance.dart

+// 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 repositories;
+
+class InstanceRepository extends M.InstanceRepository {
+  final S.Isolate isolate;
+
+  InstanceRepository(this.isolate);
+
+  Future<M.Instance> get(String id) async{
+    return (await isolate.getObject(id)) as S.Instance;
+  }
+}