Analysis server context ID is now specified by the client.

pkg/analysis_server/test/analysis_server_test.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 test.analysis_server;
 
 import 'dart:async';
 
 import 'package:analysis_server/src/analysis_server.dart';
 import 'package:analysis_server/src/domain_server.dart';
@@ skipping 18 matching lines @@
 
   static void setUp() {
     channel = new MockServerChannel();
     server = new AnalysisServer(channel);
   }
 
   static Future createContext() {
     server.handlers = [new ServerDomainHandler(server)];
     var request = new Request('my27', ServerDomainHandler.CREATE_CONTEXT_METHOD);
     request.setParameter(ServerDomainHandler.SDK_DIRECTORY_PARAM, sdkPath);
+    request.setParameter(ServerDomainHandler.CONTEXT_ID_PARAM, 'ctx');
     return channel.sendRequest(request)
         .timeout(new Duration(seconds: 1))
         .then((Response response) {
           expect(response.id, equals('my27'));
           expect(response.error, isNull);
-          var contextId = response.result[ServerDomainHandler.CONTEXT_ID_RESULT];
-          expect(contextId is String, isTrue);
         });
   }
 
   static Future echo() {
     server.handlers = [new EchoHandler()];
     var request = new Request('my22', 'echo');
     return channel.sendRequest(request)
         .timeout(new Duration(seconds: 1))
         .then((Response response) {
           expect(response.id, equals('my22'));
@@ skipping 30 matching lines @@
   @override
   Response handleRequest(Request request) {
     if (request.method == 'echo') {
       var response = new Response(request.id);
       response.setResult('echo', true);
       return response;
     }
     return null;
   }
 }