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

ios/chrome/browser/autocomplete/in_memory_url_index_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/autocomplete/in_memory_url_index_factory.h"
 
 #include <utility>
 
 #include "base/memory/singleton.h"
 #include "components/keyed_service/core/service_access_type.h"
 #include "components/keyed_service/ios/browser_state_dependency_manager.h"
 #include "components/omnibox/browser/in_memory_url_index.h"
 #include "ios/chrome/browser/bookmarks/bookmark_model_factory.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/chrome_url_constants.h"
 #include "ios/chrome/browser/history/history_service_factory.h"
 #include "ios/chrome/browser/search_engines/template_url_service_factory.h"
 #include "ios/web/public/web_thread.h"
 
 namespace ios {
 
 namespace {
 
-scoped_ptr<KeyedService> BuildInMemoryURLIndex(web::BrowserState* context) {
+std::unique_ptr<KeyedService> BuildInMemoryURLIndex(
+    web::BrowserState* context) {
   ios::ChromeBrowserState* browser_state =
       ios::ChromeBrowserState::FromBrowserState(context);
 
   SchemeSet schemes_to_whilelist;
   schemes_to_whilelist.insert(kChromeUIScheme);
 
   // Do not force creation of the HistoryService if saving history is disabled.
-  scoped_ptr<InMemoryURLIndex> in_memory_url_index(new InMemoryURLIndex(
+  std::unique_ptr<InMemoryURLIndex> in_memory_url_index(new InMemoryURLIndex(
       ios::BookmarkModelFactory::GetForBrowserState(browser_state),
       ios::HistoryServiceFactory::GetForBrowserState(
           browser_state, ServiceAccessType::IMPLICIT_ACCESS),
       ios::TemplateURLServiceFactory::GetForBrowserState(browser_state),
       web::WebThread::GetBlockingPool(), browser_state->GetStatePath(),
       schemes_to_whilelist));
   in_memory_url_index->Init();
   return std::move(in_memory_url_index);
 }
 
@@ skipping 21 matching lines @@
 }
 
 InMemoryURLIndexFactory::~InMemoryURLIndexFactory() {}
 
 // static
 BrowserStateKeyedServiceFactory::TestingFactoryFunction
 InMemoryURLIndexFactory::GetDefaultFactory() {
   return &BuildInMemoryURLIndex;
 }
 
-scoped_ptr<KeyedService> InMemoryURLIndexFactory::BuildServiceInstanceFor(
+std::unique_ptr<KeyedService> InMemoryURLIndexFactory::BuildServiceInstanceFor(
     web::BrowserState* context) const {
   return BuildInMemoryURLIndex(context);
 }
 
 web::BrowserState* InMemoryURLIndexFactory::GetBrowserStateToUse(
     web::BrowserState* context) const {
   return GetBrowserStateRedirectedInIncognito(context);
 }
 
 bool InMemoryURLIndexFactory::ServiceIsNULLWhileTesting() const {
   return true;
 }
 
 }  // namespace ios