Converted Observatory objectstore-view element

runtime/observatory/tests/observatory_ui/mocks/objects/objectstore.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 mocks;
+
+class ObjectStoreMock implements M.ObjectStore {
+  final Iterable<M.NamedField> fields;
+
+  const ObjectStoreMock({this.fields: const []});
+}
+
+class NamedFieldMock implements M.NamedField {
+  final String name;
+  final M.ObjectRef value;
+
+  const NamedFieldMock({this.name: 'field-name',
+                        this.value: const InstanceRefMock()});
+}