Remove race(s) in vmservice tests.

runtime/bin/vmservice/running_isolate.dart

Index: runtime/bin/vmservice/running_isolate.dart
diff --git a/runtime/bin/vmservice/running_isolate.dart b/runtime/bin/vmservice/running_isolate.dart
index 6c7749a6e2f5606cab1a7d5b8da81744512e8f8a..2d4af13ae97c8b7cd1c16398af2ecf051447251a 100644
--- a/runtime/bin/vmservice/running_isolate.dart
+++ b/runtime/bin/vmservice/running_isolate.dart
@@ -6,9 +6,9 @@ part of vmservice;
 
 class RunningIsolate implements ServiceRequestRouter {
   final SendPort sendPort;
-  String name = 'Unknown';
+  final String name;
 
-  RunningIsolate(this.sendPort);
+  RunningIsolate(this.sendPort, this.name);
 
   Future sendMessage(List request) {
     final completer = new Completer.sync();
@@ -33,23 +33,4 @@ class RunningIsolate implements ServiceRequestRouter {
       return new Future.value(request);
     });
   }
-
-  void _sendNameRequest() {
-    var request = new ServiceRequest();
-    request.parse(Uri.parse('/name'));
-    sendMessage(request.toServiceCallMessage()).then(_handleNameResponse);
-  }
-
-  void _handleNameResponse(String responseString) {
-    try {
-      var response = JSON.parse(responseString);
-      name = response['name'];
-    } catch (e) {
-      name = 'Error retrieving isolate name.';
-      return;
-    }
-    if (name == null) {
-      name = 'Error retrieving isolate name.';
-    }
-  }
 }