Revert 198844 "Move sequenced_task_runner to base/task"

trunk/src/webkit/quota/quota_task.h

 // 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.
 
 #ifndef WEBKIT_QUOTA_QUOTA_TASK_H_
 #define WEBKIT_QUOTA_QUOTA_TASK_H_
 
 #include <set>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
-#include "base/task/sequenced_task_runner_helpers.h"
+#include "base/sequenced_task_runner_helpers.h"
 #include "webkit/storage/webkit_storage_export.h"
 
 namespace base {
 class SingleThreadTaskRunner;
 class TaskRunner;
 }
 
 namespace quota {
 
 class QuotaTaskObserver;
@@ skipping 46 matching lines @@
 
   void RegisterTask(QuotaTask* task);
   void UnregisterTask(QuotaTask* task);
 
   typedef std::set<QuotaTask*> TaskSet;
   TaskSet running_quota_tasks_;
 };
 }
 
 #endif  // WEBKIT_QUOTA_QUOTA_TASK_H_