Revert 67662 - FBTF: Remove unneeded headers from base/ (part 10)...

chrome/browser/worker_host/message_port_dispatcher.h

 // Copyright (c) 2009 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 CHROME_BROWSER_WORKER_HOST_MESSAGE_PORT_DISPATCHER_H_
 #define CHROME_BROWSER_WORKER_HOST_MESSAGE_PORT_DISPATCHER_H_
 #pragma once
 
 #include <map>
 #include <utility>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "base/singleton.h"
 #include "base/string16.h"
+#include "base/task.h"
 #include "chrome/common/notification_observer.h"
 #include "chrome/common/notification_registrar.h"
 #include "ipc/ipc_message.h"
 
 class MessagePortDispatcher : public NotificationObserver {
  public:
   typedef std::vector<std::pair<string16, std::vector<int> > > QueuedMessages;
 
   // Returns the MessagePortDispatcher singleton.
   static MessagePortDispatcher* GetInstance();
@@ skipping 56 matching lines @@
   // Valid only during IPC message dispatching.
   IPC::Message::Sender* sender_;
   CallbackWithReturnValue<int>::Type* next_routing_id_;
 
   NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(MessagePortDispatcher);
 };
 
 #endif  // CHROME_BROWSER_WORKER_HOST_MESSAGE_PORT_DISPATCHER_H_