Implement 'edit.getRefactoring' for rename refactoring.

pkg/analysis_server/test/mocks.dart

 // Copyright (c) 2014, 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.
 
 library mocks;
 
 import 'dart:async';
 import 'dart:io';
 
 @MirrorsUsed(targets: 'mocks', override: '*')
@@ skipping 110 matching lines @@
   String toString() {
     return "NoResponseException after request ${request.toJson()}";
   }
 }
 
 /**
  * A mock [ServerCommunicationChannel] for testing [AnalysisServer].
  */
 class MockServerChannel implements ServerCommunicationChannel {
   StreamController<Request> requestController = new StreamController<Request>();
-  StreamController<Response> responseController = new StreamController<Response>();
+  StreamController<Response> responseController = new StreamController<Response>.broadcast();
   StreamController<Notification> notificationController = new StreamController<Notification>(sync: true);
 
   List<Response> responsesReceived = [];
   List<Notification> notificationsReceived = [];
   bool _closed = false;
 
   MockServerChannel() {
   }
 
   @override
@@ skipping 44 matching lines @@
   }
 
   Future<Response> waitForResponse(Request request) {
     String id = request.id;
     pumpEventQueue().then((_) {
       responseController.addError(new NoResponseException(request));
     });
     return responseController.stream.firstWhere((response) {
       return response.id == id;
     });
+//    return responseController.stream.firstWhere((response) {
+//      return response.id == id;
+//    });
   }
 
   @override
   void close() {
     _closed = true;
   }
 }
 
 /**
  * A mock [AnalysisContext] for testing [AnalysisServer].
@@ skipping 146 matching lines @@
   Set<String> dependencies = new Set<String>();
 
   @override
   PackageMapInfo computePackageMap(resource.Folder folder) {
     if (packageMaps != null) {
       return new PackageMapInfo(packageMaps[folder.path], dependencies);
     }
     return new PackageMapInfo(packageMap, dependencies);
   }
 }