Supervised users: Post blocking pool tasks with CONTINUE_SHUTDOWN behavior.

chrome/browser/chromeos/login/supervised/supervised_user_authentication.cc

Index: chrome/browser/chromeos/login/supervised/supervised_user_authentication.cc
diff --git a/chrome/browser/chromeos/login/supervised/supervised_user_authentication.cc b/chrome/browser/chromeos/login/supervised/supervised_user_authentication.cc
index c2ea24d4849c68890009e7a1f89542feae12c5b9..b4a64a35b45edd4d75d1790465b6a74a07777263 100644
--- a/chrome/browser/chromeos/login/supervised/supervised_user_authentication.cc
+++ b/chrome/browser/chromeos/login/supervised/supervised_user_authentication.cc
@@ -287,9 +287,11 @@ void SupervisedUserAuthentication::LoadPasswordUpdateData(
   base::FilePath profile_path =
       ProfileHelper::GetProfilePathByUserIdHash(user->username_hash());
   PostTaskAndReplyWithResult(
-      content::BrowserThread::GetBlockingPool(),
-      FROM_HERE,
-      base::Bind(&LoadPasswordData, profile_path),
+      content::BrowserThread::GetBlockingPool()
+          ->GetTaskRunnerWithShutdownBehavior(
+                base::SequencedWorkerPool::CONTINUE_ON_SHUTDOWN)
+          .get(),
+      FROM_HERE, base::Bind(&LoadPasswordData, profile_path),
       base::Bind(&OnPasswordDataLoaded, success_callback, failure_callback));
 }