Converted Observatory persistent-hangles-page element

runtime/observatory/tests/observatory_ui/mocks/repositories/persistent_handles.dart

Index: runtime/observatory/tests/observatory_ui/mocks/repositories/persistent_handles.dart
diff --git a/runtime/observatory/tests/observatory_ui/mocks/repositories/persistent_handles.dart b/runtime/observatory/tests/observatory_ui/mocks/repositories/persistent_handles.dart
new file mode 100644
index 0000000000000000000000000000000000000000..713be466cca0e1cf68d5991464d6a10252eb011c
--- /dev/null
+++ b/runtime/observatory/tests/observatory_ui/mocks/repositories/persistent_handles.dart
@@ -0,0 +1,23 @@
+// 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;
+
+typedef Future<M.PersistentHandles>
+        PersistentHandlesRepositoryMockGetter(M.IsolateRef i);
+
+class PersistentHandlesRepositoryMock implements M.PersistentHandlesRepository {
+  final PersistentHandlesRepositoryMockGetter _getter;
+
+  Future<M.PersistentHandles> get(M.IsolateRef i) {
+    if (_getter != null) {
+      return _getter(i);
+    }
+    return new Future.value(new PortsMock());
+  }
+
+  PersistentHandlesRepositoryMock(
+      {PersistentHandlesRepositoryMockGetter getter})
+    : _getter = getter;
+}