Remove unused include in sequenced_worker_pool.h

components/sync/model_impl/model_type_store_impl.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/sync/model_impl/model_type_store_impl.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/memory/ptr_util.h"
-#include "base/sequenced_task_runner.h"
 #include "base/task_runner_util.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "components/sync/model_impl/model_type_store_backend.h"
 #include "third_party/leveldatabase/src/include/leveldb/env.h"
 #include "third_party/leveldatabase/src/include/leveldb/write_batch.h"
 
 namespace syncer {
 
 namespace {
 
@@ skipping 310 matching lines @@
   GetLeveldbWriteBatch(write_batch)->Delete(kGlobalMetadataKey);
 }
 
 ModelTypeStoreImpl::WriteBatchImpl::WriteBatchImpl() {
   leveldb_write_batch_ = base::MakeUnique<leveldb::WriteBatch>();
 }
 
 ModelTypeStoreImpl::WriteBatchImpl::~WriteBatchImpl() {}
 
 }  // namespace syncer