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

ios/chrome/browser/translate/translate_accept_languages_factory.cc

 // Copyright 2014 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/translate/translate_accept_languages_factory.h"
 
 #include "base/macros.h"
+#include "base/memory/ptr_util.h"
 #include "components/keyed_service/core/keyed_service.h"
 #include "components/keyed_service/ios/browser_state_dependency_manager.h"
 #include "components/prefs/pref_service.h"
 #include "components/translate/core/browser/translate_accept_languages.h"
 #include "ios/chrome/browser/browser_state/browser_state_otr_helper.h"
 #include "ios/chrome/browser/browser_state/chrome_browser_state.h"
 #include "ios/chrome/browser/pref_names.h"
 
 namespace {
 
@@ skipping 42 matching lines @@
 
 TranslateAcceptLanguagesFactory::TranslateAcceptLanguagesFactory()
     : BrowserStateKeyedServiceFactory(
           "TranslateAcceptLanguagesService",
           BrowserStateDependencyManager::GetInstance()) {
 }
 
 TranslateAcceptLanguagesFactory::~TranslateAcceptLanguagesFactory() {
 }
 
-scoped_ptr<KeyedService>
+std::unique_ptr<KeyedService>
 TranslateAcceptLanguagesFactory::BuildServiceInstanceFor(
     web::BrowserState* context) const {
   ios::ChromeBrowserState* browser_state =
       ios::ChromeBrowserState::FromBrowserState(context);
-  return make_scoped_ptr(
+  return base::WrapUnique(
       new TranslateAcceptLanguagesService(browser_state->GetPrefs()));
 }
 
 web::BrowserState* TranslateAcceptLanguagesFactory::GetBrowserStateToUse(
     web::BrowserState* context) const {
   return GetBrowserStateRedirectedInIncognito(context);
 }