Remove race(s) in vmservice tests.

runtime/bin/vmservice/running_isolates.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.
 
 part of vmservice;
 
 class RunningIsolates implements ServiceRequestRouter {
   final Map<int, RunningIsolate> isolates = new Map<int, RunningIsolate>();
 
   RunningIsolates();
 
-  void isolateStartup(SendPort sp) {
+  void isolateStartup(SendPort sp, String name) {
     if (isolates[sp.hashCode] != null) {
       throw new StateError('Duplicate isolate startup.');
     }
-    var ri = new RunningIsolate(sp);
+    var ri = new RunningIsolate(sp, name);
     isolates[sp.hashCode] = ri;
-    ri._sendNameRequest();
   }
 
   void isolateShutdown(SendPort sp) {
     if (isolates[sp.hashCode] == null) {
       throw new StateError('Unknown isolate.');
     }
     isolates.remove(sp.hashCode);
   }
 
   void _isolateCollectionRequest(ServiceRequest request) {
@@ skipping 37 matching lines @@
     // Consume '/isolates/isolateId'
     request.pathSegments.removeRange(0, 2);
     if (request.pathSegments.length == 0) {
       // The request is now empty.
       request.setErrorResponse('No request for isolate: /isolates/$isolateId');
       return new Future.value(request);
     }
     return isolate.route(request);
   }
 }