Converted Observatory ports-page element

runtime/observatory/tests/observatory_ui/mocks/objects/ports.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 PortsMock implements M.Ports {
+  final Iterable<M.Port> elements;
+
+  const PortsMock({this.elements: const []});
+}
+
+class PortMock implements M.Port {
+  final String name;
+  final M.ObjectRef handler;
+
+  const PortMock({this.name: 'port-name',
+                  this.handler: const InstanceRefMock()});
+}