Change scoped_ptr to std::unique_ptr in //net.

net/ftp/ftp_transaction_factory.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 NET_FTP_FTP_TRANSACTION_FACTORY_H_
 #define NET_FTP_FTP_TRANSACTION_FACTORY_H_
 
-#include "base/memory/scoped_ptr.h"
+#include <memory>
+
 #include "net/base/net_export.h"
 
 namespace net {
 
 class FtpTransaction;
 
 // An interface to a class that can create FtpTransaction objects.
 class NET_EXPORT FtpTransactionFactory {
  public:
   virtual ~FtpTransactionFactory() {}
 
   // Creates a FtpTransaction object.
-  virtual scoped_ptr<FtpTransaction> CreateTransaction() = 0;
+  virtual std::unique_ptr<FtpTransaction> CreateTransaction() = 0;
 
   // Suspends the creation of new transactions. If |suspend| is false, creation
   // of new transactions is resumed.
   virtual void Suspend(bool suspend) = 0;
 };
 
 }  // namespace net
 
 #endif  // NET_FTP_FTP_TRANSACTION_FACTORY_H_