Converted Observatory object-common element

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

Index: runtime/observatory/lib/src/repositories/reachable_size.dart
diff --git a/runtime/observatory/lib/src/repositories/reachable_size.dart b/runtime/observatory/lib/src/repositories/reachable_size.dart
new file mode 100644
index 0000000000000000000000000000000000000000..945cd9f3a4b54e3f7beb269bc676e1fce143bdb6
--- /dev/null
+++ b/runtime/observatory/lib/src/repositories/reachable_size.dart
@@ -0,0 +1,17 @@
+// 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 ReachableSizeRepository implements M.ReachableSizeRepository {
+
+  Future<M.Guarded<M.Instance>> get(M.IsolateRef i, String id) async {
+    S.Isolate isolate = i as S.Isolate;
+    assert(isolate != null);
+    final response = await isolate.invokeRpc('_getReachableSize', {
+        'targetId' : id
+    });
+    return new S.Guarded<S.Instance>(response);
+  }
+}