Use TaskScheduler instead of SequencedWorkerPool in platform_notification_context_impl.cc.

content/browser/notifications/platform_notification_context_impl.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 "content/browser/notifications/platform_notification_context_impl.h"
 
 #include "base/bind_helpers.h"
 #include "base/files/file_util.h"
 #include "base/memory/ptr_util.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/stl_util.h"
-#include "base/threading/sequenced_worker_pool.h"
+#include "base/task_scheduler/post_task.h"
 #include "content/browser/notifications/blink_notification_service_impl.h"
 #include "content/browser/notifications/notification_database.h"
 #include "content/browser/service_worker/service_worker_context_wrapper.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/content_browser_client.h"
 #include "content/public/browser/notification_database_data.h"
 #include "content/public/browser/platform_notification_service.h"
 
 using base::DoNothing;
@@ skipping 448 matching lines @@
           this),
       base::Bind(&DoNothing));
 }
 
 void PlatformNotificationContextImpl::LazyInitialize(
     const base::Closure& success_closure,
     const base::Closure& failure_closure) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
 
   if (!task_runner_) {
-    base::SequencedWorkerPool* pool = BrowserThread::GetBlockingPool();
-    base::SequencedWorkerPool::SequenceToken token = pool->GetSequenceToken();
-
-    task_runner_ = pool->GetSequencedTaskRunner(token);
+    task_runner_ = base::CreateSequencedTaskRunnerWithTraits(
+        {base::MayBlock(), base::TaskPriority::BACKGROUND});
   }
 
   task_runner_->PostTask(
       FROM_HERE, base::Bind(&PlatformNotificationContextImpl::OpenDatabase,
                             this, success_closure, failure_closure));
 }
 
 void PlatformNotificationContextImpl::OpenDatabase(
     const base::Closure& success_closure,
     const base::Closure& failure_closure) {
@@ skipping 73 matching lines @@
 
   return path_.Append(kPlatformNotificationsDirectory);
 }
 
 void PlatformNotificationContextImpl::SetTaskRunnerForTesting(
     const scoped_refptr<base::SequencedTaskRunner>& task_runner) {
   task_runner_ = task_runner;
 }
 
 }  // namespace content