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

components/password_manager/core/browser/affiliation_backend.h

 // Copyright 2015 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_PASSWORD_MANAGER_CORE_BROWSER_AFFILIATION_BACKEND_H_
 #define COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_AFFILIATION_BACKEND_H_
 
 #include <stddef.h>
 
 #include <map>
 #include <unordered_map>
 #include <vector>
 
 #include "base/gtest_prod_util.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "components/password_manager/core/browser/affiliation_fetch_throttler_delegate.h"
 #include "components/password_manager/core/browser/affiliation_fetcher_delegate.h"
 #include "components/password_manager/core/browser/affiliation_service.h"
 #include "components/password_manager/core/browser/affiliation_utils.h"
 #include "components/password_manager/core/browser/facet_manager_host.h"
 
 namespace base {
 class Clock;
 class FilePath;
 class SingleThreadTaskRunner;
-class TaskRunner;
 class ThreadChecker;
 class TickClock;
 class Time;
 }  // namespace base
 
 namespace net {
 class URLRequestContextGetter;
 }  // namespace net
 
 namespace password_manager {
@@ skipping 119 matching lines @@
       facet_managers_;
 
   base::WeakPtrFactory<AffiliationBackend> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(AffiliationBackend);
 };
 
 }  // namespace password_manager
 
 #endif  // COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_AFFILIATION_BACKEND_H_