Use TaskScheduler instead of SequencedWorkerPool in ios_component_updater_configurator.cc.

ios/chrome/browser/component_updater/ios_component_updater_configurator.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/component_updater/ios_component_updater_configurator.h"
 
 #include <string>
 #include <vector>
 
-#include "base/sequenced_task_runner.h"
-#include "base/threading/sequenced_worker_pool.h"
+#include "base/task_scheduler/post_task.h"
 #include "base/version.h"
 #include "components/component_updater/configurator_impl.h"
 #include "components/update_client/out_of_process_patcher.h"
 #include "components/update_client/update_query_params.h"
 #include "ios/chrome/browser/application_context.h"
 #include "ios/chrome/browser/google/google_brand.h"
 #include "ios/chrome/common/channel_info.h"
-#include "ios/web/public/web_thread.h"
 
 namespace component_updater {
 
 namespace {
 
 class IOSConfigurator : public update_client::Configurator {
  public:
   IOSConfigurator(const base::CommandLine* cmdline,
                   net::URLRequestContextGetter* url_request_getter);
 
@@ skipping 119 matching lines @@
 bool IOSConfigurator::EnabledBackgroundDownloader() const {
   return configurator_impl_.EnabledBackgroundDownloader();
 }
 
 bool IOSConfigurator::EnabledCupSigning() const {
   return configurator_impl_.EnabledCupSigning();
 }
 
 scoped_refptr<base::SequencedTaskRunner>
 IOSConfigurator::GetSequencedTaskRunner() const {
-  return web::WebThread::GetBlockingPool()
-      ->GetSequencedTaskRunnerWithShutdownBehavior(
-          web::WebThread::GetBlockingPool()->GetSequenceToken(),
-          base::SequencedWorkerPool::SKIP_ON_SHUTDOWN);
+  return base::CreateSequencedTaskRunnerWithTraits(
+      {base::MayBlock(), base::TaskPriority::BACKGROUND,
+       base::TaskShutdownBehavior::SKIP_ON_SHUTDOWN});
 }
 
 PrefService* IOSConfigurator::GetPrefService() const {
   return GetApplicationContext()->GetLocalState();
 }
 
 bool IOSConfigurator::IsPerUserInstall() const {
   return true;
 }
 
 }  // namespace
 
 scoped_refptr<update_client::Configurator> MakeIOSComponentUpdaterConfigurator(
     const base::CommandLine* cmdline,
     net::URLRequestContextGetter* context_getter) {
   return base::MakeRefCounted<IOSConfigurator>(cmdline, context_getter);
 }
 
 }  // namespace component_updater