Convert //chrome/browser/chromeos from scoped_ptr to std::unique_ptr

chrome/browser/chromeos/first_run/drive_first_run_controller.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 CHROME_BROWSER_CHROMEOS_FIRST_RUN_DRIVE_FIRST_RUN_CONTROLLER_H_
 #define CHROME_BROWSER_CHROMEOS_FIRST_RUN_DRIVE_FIRST_RUN_CONTROLLER_H_
 
 #include "base/macros.h"
 #include "base/observer_list.h"
 #include "base/timer/timer.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 59 matching lines @@
   // Called when timed out waiting for offline initialization to complete.
   void OnWebContentsTimedOut();
 
   // Creates and shows a system notification when enable offline succeeds.
   void ShowNotification();
 
   // Cleans up internal state and schedules self for deletion.
   void CleanUp();
 
   Profile* profile_;
-  scoped_ptr<DriveWebContentsManager> web_contents_manager_;
+  std::unique_ptr<DriveWebContentsManager> web_contents_manager_;
   base::OneShotTimer web_contents_timer_;
   base::OneShotTimer initial_delay_timer_;
   bool started_;
   base::ObserverList<Observer> observer_list_;
 
   int initial_delay_secs_;
   int web_contents_timeout_secs_;
   std::string drive_offline_endpoint_url_;
   std::string drive_hosted_app_id_;
 
   DISALLOW_COPY_AND_ASSIGN(DriveFirstRunController);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_FIRST_RUN_DRIVE_FIRST_RUN_CONTROLLER_H_