Remove unused include in sequenced_worker_pool.h

components/gcm_driver/crypto/gcm_key_store.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/gcm_driver/crypto/gcm_key_store.h"
 
 #include <stddef.h>
 
 #include <utility>
 
 #include "base/bind_helpers.h"
 #include "base/callback.h"
 #include "base/logging.h"
 #include "base/metrics/histogram_macros.h"
+#include "base/sequenced_task_runner.h"
 #include "components/gcm_driver/crypto/p256_key_util.h"
 #include "components/leveldb_proto/proto_database_impl.h"
 #include "crypto/random.h"
 
 namespace gcm {
 
 namespace {
 
 // Statistics are logged to UMA with this string as part of histogram name. They
 // can all be found under LevelDB.*.GCMKeyStore. Changing this needs to
@@ skipping 296 matching lines @@
     key_data_[entry.app_id()][authorized_entity] = {entry.keys(0),
                                                     entry.auth_secret()};
   }
 
   state_ = State::INITIALIZED;
 
   delayed_task_controller_.SetReady();
 }
 
 }  // namespace gcm