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

ios/chrome/browser/suggestions/suggestions_service_factory.mm

 // 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/suggestions/suggestions_service_factory.h"
 
 #include <utility>
 
 #include "base/files/file_path.h"
+#include "base/memory/ptr_util.h"
 #include "base/memory/singleton.h"
 #include "base/sequenced_task_runner.h"
 #include "base/threading/sequenced_worker_pool.h"
 #include "components/browser_sync/browser/profile_sync_service.h"
 #include "components/keyed_service/ios/browser_state_dependency_manager.h"
 #include "components/leveldb_proto/proto_database_impl.h"
 #include "components/signin/core/browser/profile_oauth2_token_service.h"
 #include "components/signin/core/browser/signin_manager.h"
 #include "components/suggestions/blacklist_store.h"
 #include "components/suggestions/image_fetcher.h"
@@ skipping 31 matching lines @@
           "SuggestionsService",
           BrowserStateDependencyManager::GetInstance()) {
   DependsOn(ios::SigninManagerFactory::GetInstance());
   DependsOn(OAuth2TokenServiceFactory::GetInstance());
   DependsOn(IOSChromeProfileSyncServiceFactory::GetInstance());
 }
 
 SuggestionsServiceFactory::~SuggestionsServiceFactory() {
 }
 
-scoped_ptr<KeyedService> SuggestionsServiceFactory::BuildServiceInstanceFor(
+std::unique_ptr<KeyedService>
+SuggestionsServiceFactory::BuildServiceInstanceFor(
     web::BrowserState* context) const {
   base::SequencedWorkerPool* sequenced_worker_pool =
       web::WebThread::GetBlockingPool();
   scoped_refptr<base::SequencedTaskRunner> background_task_runner =
       sequenced_worker_pool->GetSequencedTaskRunner(
           sequenced_worker_pool->GetSequenceToken());
 
   ios::ChromeBrowserState* browser_state =
       ios::ChromeBrowserState::FromBrowserState(context);
   SigninManager* signin_manager =
       ios::SigninManagerFactory::GetForBrowserState(browser_state);
   ProfileOAuth2TokenService* token_service =
       OAuth2TokenServiceFactory::GetForBrowserState(browser_state);
   ProfileSyncService* sync_service =
       IOSChromeProfileSyncServiceFactory::GetForBrowserState(browser_state);
   base::FilePath database_dir(
       browser_state->GetStatePath().Append(kThumbnailDirectory));
-  scoped_ptr<SuggestionsStore> suggestions_store(
+  std::unique_ptr<SuggestionsStore> suggestions_store(
       new SuggestionsStore(browser_state->GetPrefs()));
-  scoped_ptr<BlacklistStore> blacklist_store(
+  std::unique_ptr<BlacklistStore> blacklist_store(
       new BlacklistStore(browser_state->GetPrefs()));
-  scoped_ptr<leveldb_proto::ProtoDatabaseImpl<ImageData>> db(
+  std::unique_ptr<leveldb_proto::ProtoDatabaseImpl<ImageData>> db(
       new leveldb_proto::ProtoDatabaseImpl<ImageData>(background_task_runner));
-  scoped_ptr<ImageFetcher> image_fetcher(new ImageFetcherImpl(
+  std::unique_ptr<ImageFetcher> image_fetcher(new ImageFetcherImpl(
       browser_state->GetRequestContext(), sequenced_worker_pool));
-  scoped_ptr<ImageManager> thumbnail_manager(new ImageManager(
+  std::unique_ptr<ImageManager> thumbnail_manager(new ImageManager(
       std::move(image_fetcher), std::move(db), database_dir,
       web::WebThread::GetTaskRunnerForThread(web::WebThread::DB)));
-  return make_scoped_ptr(new SuggestionsService(
+  return base::WrapUnique(new SuggestionsService(
       signin_manager, token_service, sync_service,
       browser_state->GetRequestContext(), std::move(suggestions_store),
       std::move(thumbnail_manager), std::move(blacklist_store)));
 }
 
 void SuggestionsServiceFactory::RegisterBrowserStatePrefs(
     user_prefs::PrefRegistrySyncable* registry) {
   SuggestionsService::RegisterProfilePrefs(registry);
 }
 
 }  // namespace suggestions