Fix http requests and the crash dump RPC

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 34 matching lines @@
     if (uri == null) {
       return '';
     }
     if (uri.pathSegments.length == 0) {
       return '';
     }
     return uri.pathSegments[0];
   }
 
   Message.fromUri(this.client, Uri uri)
-      : method = _methodNameFromUri(uri) {
+      : serial = '', method = _methodNameFromUri(uri) {
     params.addAll(uri.queryParameters);
   }
 
   Message.forIsolate(this.client, Uri uri, RunningIsolate isolate)
-      : method = _methodNameFromUri(uri) {
+      : serial = '', method = _methodNameFromUri(uri) {
     params.addAll(uri.queryParameters);
     params['isolateId'] = isolate.serviceId;
   }
 
   Uri toUri() {
     return new Uri(path: method, queryParameters: params);
   }
 
   dynamic toJson() {
     return {
@@ skipping 85 matching lines @@
     };
     _completer.complete(JSON.encode(response));
   }
 }
 
 bool sendIsolateServiceMessage(SendPort sp, List m)
     native "VMService_SendIsolateServiceMessage";
 
 void sendRootServiceMessage(List m)
     native "VMService_SendRootServiceMessage";