Converted Observatory persistent-hangles-page element

runtime/observatory/lib/src/repositories/persistent_handles.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 repositories;
 
-class PortsRepository implements M.PortsRepository {
-  Future<M.Ports> get(M.IsolateRef i) async {
+class PersistentHandlesRepository implements M.PersistentHandlesRepository {
+  Future<M.PersistentHandles> get(M.IsolateRef i) async {
     S.Isolate isolate = i as S.Isolate;
     assert(isolate != null);
-    final response = await isolate.invokeRpc('_getPorts', {});
-    return new S.Ports(response);
+    final response = await isolate.invokeRpc('_getPersistentHandles', {});
+    return new S.PersistentHandles(response);
   }
 }