Remove unused base/threading/worker_pool.h includes.

extensions/browser/api/networking_private/networking_private_service_client.cc

 // Copyright 2013 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 "extensions/browser/api/networking_private/networking_private_service_client.h"
 
 #include <utility>
 
 #include "base/base64.h"
 #include "base/bind.h"
 #include "base/memory/ptr_util.h"
 #include "base/sequenced_task_runner.h"
 #include "base/threading/thread_task_runner_handle.h"
-#include "base/threading/worker_pool.h"
 #include "components/onc/onc_constants.h"
 #include "content/public/browser/browser_thread.h"
 #include "extensions/browser/api/networking_private/networking_private_api.h"
 #include "extensions/browser/api/networking_private/networking_private_delegate_observer.h"
 
 using content::BrowserThread;
 using wifi::WiFiService;
 
 namespace extensions {
 
@@ skipping 449 matching lines @@
 }
 
 void NetworkingPrivateServiceClient::OnNetworkListChangedEventOnUIThread(
     const std::vector<std::string>& network_guids) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   for (auto& observer : network_events_observers_)
     observer.OnNetworkListChangedEvent(network_guids);
 }
 
 }  // namespace extensions