Revert 198844 "Move sequenced_task_runner to base/task"

trunk/src/chrome/browser/profiles/refcounted_profile_keyed_service.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 CHROME_BROWSER_PROFILES_REFCOUNTED_PROFILE_KEYED_SERVICE_H_
 #define CHROME_BROWSER_PROFILES_REFCOUNTED_PROFILE_KEYED_SERVICE_H_
 
 #include "base/memory/ref_counted.h"
-#include "base/task/sequenced_task_runner_helpers.h"
+#include "base/sequenced_task_runner_helpers.h"
 #include "content/public/browser/browser_thread.h"
 
 class RefcountedProfileKeyedService;
 
 namespace impl {
 
 struct RefcountedProfileKeyedServiceTraits {
   static void Destruct(const RefcountedProfileKeyedService* obj);
 };
 
@@ skipping 41 matching lines @@
  private:
   friend struct impl::RefcountedProfileKeyedServiceTraits;
   friend class base::DeleteHelper<RefcountedProfileKeyedService>;
 
   // Do we have to delete this object on a specific thread?
   bool requires_destruction_on_thread_;
   content::BrowserThread::ID thread_id_;
 };
 
 #endif  // CHROME_BROWSER_PROFILES_REFCOUNTED_PROFILE_KEYED_SERVICE_H_