Remove the reply port form the native isolate handler

runtime/bin/io_service.cc

 // 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.
 
 #include "bin/dartutils.h"
 #include "bin/directory.h"
 #include "bin/file.h"
 #include "bin/io_buffer.h"
 #include "bin/io_service.h"
 #include "bin/secure_socket.h"
@@ skipping 10 matching lines @@
 
 namespace dart {
 namespace bin {
 
 #define CASE_REQUEST(type, method, id)                                         \
   case IOService::k##type##method##Request:                                    \
     response = type::method##Request(data);                                    \
     break;
 
 void IOServiceCallback(Dart_Port dest_port_id,
-                       Dart_Port reply_port_id,
                        Dart_CObject* message) {
+  Dart_Port reply_port_id;
   CObject* response = CObject::IllegalArgumentError();
   CObjectArray request(message);
   if (message->type == Dart_CObject_kArray &&
-      request.Length() == 3 &&
+      request.Length() == 4 &&
       request[0]->IsInt32() &&
-      request[1]->IsInt32() &&
-      request[2]->IsArray()) {
+      request[1]->IsSendPort() &&
+      request[2]->IsInt32() &&
+      request[3]->IsArray()) {
     CObjectInt32 message_id(request[0]);
-    CObjectInt32 request_id(request[1]);
-    CObjectArray data(request[2]);
+    CObjectSendPort reply_port(request[1]);
+    CObjectInt32 request_id(request[2]);
+    CObjectArray data(request[3]);
+    reply_port_id = reply_port.Value();
     switch (request_id.Value()) {
   IO_SERVICE_REQUEST_LIST(CASE_REQUEST);
       default:
         UNREACHABLE();
     }
   }
 
   CObjectArray result(CObject::NewArray(2));
   result.SetAt(0, request[0]);
   result.SetAt(1, response);
@@ skipping 15 matching lines @@
   if (service_port != ILLEGAL_PORT) {
     // Return a send port for the service port.
     Dart_Handle send_port = Dart_NewSendPort(service_port);
     Dart_SetReturnValue(args, send_port);
   }
 }
 
 
 }  // namespace bin
 }  // namespace dart
-