Revert 198844 "Move sequenced_task_runner to base/task"

trunk/src/content/browser/webui/url_data_source_impl.h

 // Copyright (c) 2013 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 CONTENT_BROWSER_WEBUI_URL_DATA_SOURCE_IMPL_H_
 #define CONTENT_BROWSER_WEBUI_URL_DATA_SOURCE_IMPL_H_
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
-#include "base/task/sequenced_task_runner_helpers.h"
+#include "base/sequenced_task_runner_helpers.h"
 #include "content/browser/webui/url_data_manager.h"
 #include "content/common/content_export.h"
 
 namespace base {
 class RefCountedMemory;
 }
 
 namespace content {
 class URLDataManagerBackend;
 class URLDataSource;
@@ skipping 67 matching lines @@
   // scoped_refptr else there would be a cycle between the backend and data
   // source.
   URLDataManagerBackend* backend_;
 
   scoped_ptr<URLDataSource> source_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_WEBUI_URL_DATA_SOURCE_IMPL_H_