Supervised users: Post blocking pool tasks with CONTINUE_SHUTDOWN behavior.

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

 // Copyright 2014 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 "chrome/browser/chromeos/login/users/supervised_user_manager_impl.h"
 
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/prefs/pref_registry_simple.h"
 #include "base/prefs/pref_service.h"
@@ skipping 494 matching lines @@
   return authentication_.get();
 }
 
 void SupervisedUserManagerImpl::LoadSupervisedUserToken(
     Profile* profile,
     const LoadTokenCallback& callback) {
   // TODO(antrim): use profile->GetPath() once we sure it is safe.
   base::FilePath profile_dir = ProfileHelper::GetProfilePathByUserIdHash(
       ProfileHelper::Get()->GetUserByProfile(profile)->username_hash());
   PostTaskAndReplyWithResult(
-      content::BrowserThread::GetBlockingPool(),
-      FROM_HERE,
-      base::Bind(&LoadSyncToken, profile_dir),
-      callback);
+      content::BrowserThread::GetBlockingPool()
+          ->GetTaskRunnerWithShutdownBehavior(
+                base::SequencedWorkerPool::CONTINUE_ON_SHUTDOWN)
+          .get(),
+      FROM_HERE, base::Bind(&LoadSyncToken, profile_dir), callback);
 }
 
 void SupervisedUserManagerImpl::ConfigureSyncWithToken(
     Profile* profile,
     const std::string& token) {
   if (!token.empty())
     SupervisedUserServiceFactory::GetForProfile(profile)->InitSync(token);
 }
 
 }  // namespace chromeos