Optionally have MessagePort pass data as base::Value, part 1.

content/browser/message_port_message_filter.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/message_port_message_filter.h"
 
 #include "content/browser/message_port_service.h"
 #include "content/common/message_port_messages.h"
 #include "content/common/view_messages.h"
 
@@ skipping 44 matching lines @@
 void MessagePortMessageFilter::OnDestruct() const {
   BrowserThread::DeleteOnIOThread::Destruct(this);
 }
 
 int MessagePortMessageFilter::GetNextRoutingID() {
   return next_routing_id_.Run();
 }
 
 void MessagePortMessageFilter::SendMessage(
     int route_id,
-    const base::string16& message,
+    const MessagePortMessage& message,
     const std::vector<int>& sent_message_port_ids) {
   // Generate new routing ids for all ports that were sent around. This avoids
   // waiting for the created ports to send a sync message back to get routing
   // ids.
   std::vector<int> new_routing_ids;
   UpdateMessagePortsWithNewRoutes(sent_message_port_ids, &new_routing_ids);
   Send(new MessagePortMsg_Message(route_id, message, sent_message_port_ids,
                                   new_routing_ids));
 }
 
@@ skipping 27 matching lines @@
 }
 
 
 void MessagePortMessageFilter::OnCreateMessagePort(int *route_id,
                                                    int* message_port_id) {
   *route_id = next_routing_id_.Run();
   MessagePortService::GetInstance()->Create(*route_id, this, message_port_id);
 }
 
 }  // namespace content