Remove unused include in sequenced_worker_pool.h

content/browser/cache_storage/cache_storage_operation.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 CONTENT_BROWSER_CACHE_STORAGE_CACHE_STORAGE_OPERATION_H_
 #define CONTENT_BROWSER_CACHE_STORAGE_CACHE_STORAGE_OPERATION_H_
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
+#include "base/single_thread_task_runner.h"
 #include "base/time/time.h"
 #include "content/browser/cache_storage/cache_storage_scheduler_client.h"
 #include "content/common/content_export.h"
 
 namespace content {
 
 // An operation to run in the CacheStorageScheduler. It's mostly just a closure
 // to run plus a bunch of metrics data.
 class CONTENT_EXPORT CacheStorageOperation {
  public:
@@ skipping 30 matching lines @@
   CacheStorageSchedulerClient client_type_;
   scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
   base::WeakPtrFactory<CacheStorageOperation> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(CacheStorageOperation);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_CACHE_STORAGE_CACHE_STORAGE_OPERATION_H_