Revert of Remove header dependencies from sequence_checker.h to sequenced_worker_pool.h

components/browsing_data/content/conditional_cache_counting_helper.h

 // Copyright 2016 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 COMPONENTS_BROWSING_DATA_CONTENT_CONDITIONAL_CACHE_COUNTING_HELPER_H_
 #define COMPONENTS_BROWSING_DATA_CONTENT_CONDITIONAL_CACHE_COUNTING_HELPER_H_
 
 #include <memory>
 
 #include "base/callback_forward.h"
-#include "base/sequenced_task_runner_helpers.h"
 #include "net/base/net_errors.h"
 #include "net/disk_cache/disk_cache.h"
 
 namespace content {
 class StoragePartition;
 }
 
 namespace net {
 class URLRequestContextGetter;
 }
@@ skipping 67 matching lines @@
   std::unique_ptr<disk_cache::Backend::Iterator> iterator_;
 
   base::WeakPtrFactory<ConditionalCacheCountingHelper> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ConditionalCacheCountingHelper);
 };
 
 }  // namespace browsing_data
 
 #endif  // COMPONENTS_BROWSING_DATA_CONTENT_CONDITIONAL_CACHE_COUNTING_HELPER_H_