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

chrome/browser/chromeos/arc/arc_auth_service.h

 // Copyright 2016 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_ARC_ARC_AUTH_SERVICE_H_
 #define CHROME_BROWSER_CHROMEOS_ARC_ARC_AUTH_SERVICE_H_
 
 #include <ostream>
 
 #include "base/macros.h"
@@ skipping 156 matching lines @@
   // communication and shared with Arc OptIn UI platform app.
   content::StoragePartition* storage_partition_ = nullptr;
 
   // Registrar used to monitor ARC enabled state.
   PrefChangeRegistrar pref_change_registrar_;
 
   mojo::Binding<AuthHost> binding_;
   base::ThreadChecker thread_checker_;
   State state_ = State::STOPPED;
   base::ObserverList<Observer> observer_list_;
-  scoped_ptr<GaiaAuthFetcher> merger_fetcher_;
-  scoped_ptr<UbertokenFetcher> ubertoken_fethcher_;
+  std::unique_ptr<GaiaAuthFetcher> merger_fetcher_;
+  std::unique_ptr<UbertokenFetcher> ubertoken_fethcher_;
   std::string auth_code_;
   GetAuthCodeCallback auth_callback_;
   bool initial_opt_in_ = false;
   bool context_prepared_ = false;
   UIPage ui_page_ = UIPage::NO_PAGE;
   base::string16 ui_page_status_;
 
   DISALLOW_COPY_AND_ASSIGN(ArcAuthService);
 };
 
 std::ostream& operator<<(std::ostream& os, const ArcAuthService::State& state);
 
 }  // namespace arc
 
 #endif  // CHROME_BROWSER_CHROMEOS_ARC_ARC_AUTH_SERVICE_H_