Added Editor stream and sendObjectToEditor RPC into Service Protocol

runtime/observatory/lib/src/models/repositories/editor.dart

Index: runtime/observatory/lib/src/models/repositories/editor.dart
diff --git a/runtime/observatory/lib/src/models/repositories/editor.dart b/runtime/observatory/lib/src/models/repositories/editor.dart
new file mode 100644
index 0000000000000000000000000000000000000000..24f2a7c4aafb4e26fc7b931f3b5f869be66bbecf
--- /dev/null
+++ b/runtime/observatory/lib/src/models/repositories/editor.dart
@@ -0,0 +1,9 @@
+// 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 models;
+
+abstract class EditorRepository {
+  Future<Sentinel> sendObject(IsolateRef isolate, ObjectRef obj);
+}