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

components/web_restrictions/browser/web_restrictions_client.cc

 // 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.
 
 #include "components/web_restrictions/browser/web_restrictions_client.h"
 
 #include "base/android/jni_string.h"
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/task_scheduler/post_task.h"
-#include "base/threading/sequenced_worker_pool.h"
 #include "base/threading/thread_restrictions.h"
 #include "content/public/browser/browser_thread.h"
 #include "jni/WebRestrictionsClient_jni.h"
 
 using base::android::ScopedJavaGlobalRef;
 
 namespace web_restrictions {
 
 namespace {
 
@@ skipping 221 matching lines @@
   base::AutoLock lock(lock_);
   cache_data_.erase(url);
 }
 
 void WebRestrictionsClient::Cache::Clear() {
   base::AutoLock lock(lock_);
   cache_data_.clear();
 }
 
 }  // namespace web_restrictions