iwyu: Use callback_old.h where appropriate, part 2.

chrome/browser/service/service_process_control.h

 // Copyright (c) 2011 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_SERVICE_SERVICE_PROCESS_CONTROL_H_
 #define CHROME_BROWSER_SERVICE_SERVICE_PROCESS_CONTROL_H_
 
 #include <queue>
 #include <set>
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
-#include "base/callback.h"
+#include "base/callback_old.h"
 #include "base/id_map.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/process.h"
 #include "base/task.h"
 #include "content/common/notification_observer.h"
 #include "content/common/notification_registrar.h"
 #include "ipc/ipc_sync_channel.h"
 
 class Profile;
 class CommandLine;
@@ skipping 168 matching lines @@
   // the cloud print proxy.
   scoped_ptr<Callback2<bool, std::string>::Type> cloud_print_status_callback_;
 
   // Handler for messages from service process.
   std::set<MessageHandler*> message_handlers_;
 
   NotificationRegistrar registrar_;
 };
 
 #endif  // CHROME_BROWSER_SERVICE_SERVICE_PROCESS_CONTROL_H_