Remove unused base/threading/worker_pool.h includes.

chromecast/browser/url_request_context_factory.cc

 // Copyright 2014 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 "chromecast/browser/url_request_context_factory.h"
 
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "base/task_scheduler/post_task.h"
-#include "base/threading/worker_pool.h"
 #include "chromecast/base/chromecast_switches.h"
 #include "chromecast/browser/cast_browser_process.h"
 #include "chromecast/browser/cast_http_user_agent_settings.h"
 #include "chromecast/browser/cast_network_delegate.h"
 #include "components/proxy_config/pref_proxy_config_tracker_impl.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/cookie_store_factory.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/url_constants.h"
@@ skipping 451 matching lines @@
   if (media_getter_) {
     media_getter_->GetURLRequestContext()
         ->http_transaction_factory()
         ->GetSession()
         ->DisableQuic();
   }
 }
 
 }  // namespace shell
 }  // namespace chromecast