Cleanup VM service

tests/standalone/vmservice/unknown_command_test.dart

 // Copyright (c) 2013, 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 unknown_command_test;
 
 import 'test_helper.dart';
 import 'package:expect/expect.dart';
 
 class UnknownCommandTest extends VmServiceRequestHelper {
   UnknownCommandTest(port) : super('http://127.0.0.1:$port/badcommand');
 
   onRequestCompleted(Map reply) {
-    Expect.equals('error', reply['type']);
+    Expect.equals('Error', reply['type']);
   }
 }
 
 main() {
   var process = new TestLauncher('unknown_command_script.dart');
   process.launch().then((port) {
     var test = new UnknownCommandTest(port);
     test.makeRequest().then((_) {
       process.requestExit();
     });
   });
 }