Use TaskScheduler instead of blocking pool in supervised_user_manager_impl.cc.

chrome/browser/chromeos/login/users/supervised_user_manager_impl.cc

Index: chrome/browser/chromeos/login/users/supervised_user_manager_impl.cc
diff --git a/chrome/browser/chromeos/login/users/supervised_user_manager_impl.cc b/chrome/browser/chromeos/login/users/supervised_user_manager_impl.cc
index baf1eeb9a9e86fa518a32f58c637c028e83e8f8c..950731dc234e2e03a7896f4271bb800097a1ffde 100644
--- a/chrome/browser/chromeos/login/users/supervised_user_manager_impl.cc
+++ b/chrome/browser/chromeos/login/users/supervised_user_manager_impl.cc
@@ -10,7 +10,7 @@
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
-#include "base/threading/sequenced_worker_pool.h"
+#include "base/task_scheduler/post_task.h"
 #include "base/values.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chromeos/login/supervised/supervised_user_authentication.h"
@@ -516,9 +516,12 @@ void SupervisedUserManagerImpl::LoadSupervisedUserToken(
   base::FilePath profile_dir = ProfileHelper::GetProfilePathByUserIdHash(
       ProfileHelper::Get()->GetUserByProfile(profile)->username_hash());
   PostTaskAndReplyWithResult(
-      content::BrowserThread::GetBlockingPool()
-          ->GetTaskRunnerWithShutdownBehavior(
-                base::SequencedWorkerPool::CONTINUE_ON_SHUTDOWN)
+      base::CreateTaskRunnerWithTraits(
+          base::TaskTraits()
+              .MayBlock()
+              .WithPriority(base::TaskPriority::BACKGROUND)
+              .WithShutdownBehavior(
+                  base::TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN))
           .get(),
       FROM_HERE, base::Bind(&LoadSyncToken, profile_dir), callback);
 }