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

content/browser/message_port_service.h

 // 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.
 
 #ifndef CONTENT_BROWSER_MESSAGE_PORT_SERVICE_H_
 #define CONTENT_BROWSER_MESSAGE_PORT_SERVICE_H_
 
 #include <map>
 #include <utility>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/memory/singleton.h"
 #include "base/strings/string16.h"
 #include "content/common/content_export.h"
+#include "content/public/common/message_port_types.h"
 #include "ipc/ipc_message.h"
 
 namespace content {
 class MessagePortDelegate;
 
 class CONTENT_EXPORT MessagePortService {
  public:
-  typedef std::vector<std::pair<base::string16, std::vector<int> > >
+  typedef std::vector<std::pair<content::MessagePortMessage, std::vector<int>>>
       QueuedMessages;
 
   // Returns the MessagePortService singleton.
   static MessagePortService* GetInstance();
 
   // These methods correspond to the message port related IPCs.
   void Create(int route_id,
               MessagePortDelegate* delegate,
               int* message_port_id);
   void Destroy(int message_port_id);
   void Entangle(int local_message_port_id, int remote_message_port_id);
   void PostMessage(int sender_message_port_id,
-                   const base::string16& message,
+                   const MessagePortMessage& message,
                    const std::vector<int>& sent_message_port_ids);
   void QueueMessages(int message_port_id);
   void SendQueuedMessages(int message_port_id,
                           const QueuedMessages& queued_messages);
   void ReleaseMessages(int message_port_id);
 
   // Updates the information needed to reach a message port when it's sent to a
   // (possibly different) process.
   void UpdateMessagePort(int message_port_id,
                          MessagePortDelegate* delegate,
@@ skipping 18 matching lines @@
   // Attempts to send the queued messages for a message port.
   void SendQueuedMessagesIfPossible(int message_port_id);
 
  private:
   friend struct DefaultSingletonTraits<MessagePortService>;
 
   MessagePortService();
   ~MessagePortService();
 
   void PostMessageTo(int message_port_id,
-                     const base::string16& message,
+                     const MessagePortMessage& message,
                      const std::vector<int>& sent_message_port_ids);
 
   // Handles the details of removing a message port id. Before calling this,
   // verify that the message port id exists.
   void Erase(int message_port_id);
 
   struct MessagePort;
   typedef std::map<int, MessagePort> MessagePorts;
   MessagePorts message_ports_;
 
   // We need globally unique identifiers for each message port.
   int next_message_port_id_;
 
   DISALLOW_COPY_AND_ASSIGN(MessagePortService);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_MESSAGE_PORT_SERVICE_H_