Convert //ios from scoped_ptr to std::unique_ptr.

ios/chrome/browser/autofill/personal_data_manager_factory.cc

 // Copyright 2015 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.
 
 #include "ios/chrome/browser/autofill/personal_data_manager_factory.h"
 
 #include <utility>
 
 #include "base/memory/singleton.h"
 #include "components/autofill/core/browser/personal_data_manager.h"
@@ skipping 24 matching lines @@
     : BrowserStateKeyedServiceFactory(
           "PersonalDataManager",
           BrowserStateDependencyManager::GetInstance()) {
   DependsOn(ios::AccountTrackerServiceFactory::GetInstance());
   DependsOn(ios::SigninManagerFactory::GetInstance());
   DependsOn(ios::WebDataServiceFactory::GetInstance());
 }
 
 PersonalDataManagerFactory::~PersonalDataManagerFactory() {}
 
-scoped_ptr<KeyedService> PersonalDataManagerFactory::BuildServiceInstanceFor(
+std::unique_ptr<KeyedService>
+PersonalDataManagerFactory::BuildServiceInstanceFor(
     web::BrowserState* context) const {
   ios::ChromeBrowserState* chrome_browser_state =
       ios::ChromeBrowserState::FromBrowserState(context);
-  scoped_ptr<autofill::PersonalDataManager> service(
+  std::unique_ptr<autofill::PersonalDataManager> service(
       new autofill::PersonalDataManager(
           GetApplicationContext()->GetApplicationLocale()));
   service->Init(
       ios::WebDataServiceFactory::GetAutofillWebDataForBrowserState(
           chrome_browser_state, ServiceAccessType::EXPLICIT_ACCESS),
       chrome_browser_state->GetPrefs(),
       ios::AccountTrackerServiceFactory::GetForBrowserState(
           chrome_browser_state),
       ios::SigninManagerFactory::GetForBrowserState(chrome_browser_state),
       chrome_browser_state->IsOffTheRecord());
   return std::move(service);
 }