Allow root level requests in the vm service.

runtime/vm/service/message.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 Message {
   final Completer _completer = new Completer.sync();
   bool get completed => _completer.isCompleted;
   /// Future of response.
@@ skipping 45 matching lines @@
       receivePort.close();
       if (value is Exception) {
         _completer.completeError(value);
       } else {
         _completer.complete(value);
       }
     };
     var keys = options.keys.toList();
     var values = options.values.toList();
     var request = [receivePort.sendPort, path, keys, values];
-    sendServiceMessage(sendPort, request);
+    sendIsolateServiceMessage(sendPort, request);
+    return _completer.future;
+  }
+
+  Future<String> sendToVM() {
+    final receivePort = new RawReceivePort();
+    receivePort.handler = (value) {
+      receivePort.close();
+      if (value is Exception) {
+        _completer.completeError(value);
+      } else {
+        _completer.complete(value);
+      }
+    };
+    var keys = options.keys.toList();
+    var values = options.values.toList();
+    var request = [receivePort.sendPort, path, keys, values];
+    sendRootServiceMessage(request);
     return _completer.future;
   }
 
   void setResponse(String response) {
     _completer.complete(response);
   }
 
   void setErrorResponse(String error) {
     _completer.complete(JSON.encode({
         'type': 'Error',
         'msg': error,
         'path': path,
         'options': options
     }));
   }
 }
+
+void sendIsolateServiceMessage(SendPort sp, List m)
+    native "VMService_SendIsolateServiceMessage";
+
+void sendRootServiceMessage(List m)
+    native "VMService_SendRootServiceMessage";