Move sequenced_task_runner to base/task

webkit/fileapi/file_system_task_runners.cc

 // Copyright (c) 2012 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 "webkit/fileapi/file_system_task_runners.h"
 
 #include "base/message_loop_proxy.h"
-#include "base/sequenced_task_runner.h"
 #include "base/single_thread_task_runner.h"
+#include "base/task/sequenced_task_runner.h"
 
 namespace fileapi {
 
 const char kMediaTaskRunnerName[] = "media-task-runner";
 
 FileSystemTaskRunners::FileSystemTaskRunners(
     base::SingleThreadTaskRunner* io_task_runner,
     base::SingleThreadTaskRunner* file_task_runner,
     base::SequencedTaskRunner* media_task_runner)
     : io_task_runner_(io_task_runner),
       file_task_runner_(file_task_runner),
       media_task_runner_(media_task_runner) {
 }
 
 // static
 scoped_ptr<FileSystemTaskRunners>
 FileSystemTaskRunners::CreateMockTaskRunners() {
   return make_scoped_ptr(new FileSystemTaskRunners(
       base::MessageLoopProxy::current(),
       base::MessageLoopProxy::current(),
       base::MessageLoopProxy::current()));
 }
 
 FileSystemTaskRunners::~FileSystemTaskRunners() {
 }
 
 }  // namespace fileapi