Use TaskScheduler instead of SequencedWorkerPool in ios_component_updater_configurator.cc.

ios/chrome/browser/component_updater/ios_component_updater_configurator.cc

Index: ios/chrome/browser/component_updater/ios_component_updater_configurator.cc
diff --git a/ios/chrome/browser/component_updater/ios_component_updater_configurator.cc b/ios/chrome/browser/component_updater/ios_component_updater_configurator.cc
index 55bb8f5ea1e0710ed1d2cfa12f40b6cf62e840a2..a441b5f58667fdbeaf43b7ea7a1014dad3fc1320 100644
--- a/ios/chrome/browser/component_updater/ios_component_updater_configurator.cc
+++ b/ios/chrome/browser/component_updater/ios_component_updater_configurator.cc
@@ -7,8 +7,7 @@
 #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"
@@ -16,7 +15,6 @@
 #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 {
 
@@ -156,10 +154,9 @@ bool IOSConfigurator::EnabledCupSigning() const {
 
 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 {