Remove some configuration from the extension URLRequestContexts.

chrome/browser/profiles/profile_impl_io_data.h

 // Copyright (c) 2012 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 CHROME_BROWSER_PROFILES_PROFILE_IMPL_IO_DATA_H_
 #define CHROME_BROWSER_PROFILES_PROFILE_IMPL_IO_DATA_H_
 
 #include "base/callback.h"
 #include "base/containers/hash_tables.h"
 #include "base/macros.h"
@@ skipping 199 matching lines @@
   // Owned by URLRequestContextStorage, reference here to can be shut down on
   // the UI thread.
   net::HttpServerPropertiesManager* http_server_properties_manager_;
 
   mutable std::unique_ptr<net::CookieStore> extensions_cookie_store_;
 
   mutable std::unique_ptr<chrome_browser_net::Predictor> predictor_;
 
   mutable std::unique_ptr<net::URLRequestContext> media_request_context_;
 
-  mutable std::unique_ptr<net::URLRequestJobFactory> extensions_job_factory_;
-
   // Owned by ChromeNetworkDelegate (which is owned by |network_delegate_|).
   mutable domain_reliability::DomainReliabilityMonitor*
       domain_reliability_monitor_;
 
   // Parameters needed for isolated apps.
   base::FilePath profile_path_;
   int app_cache_max_size_;
   int app_media_cache_max_size_;
 
   DISALLOW_COPY_AND_ASSIGN(ProfileImplIOData);
 };
 
 #endif  // CHROME_BROWSER_PROFILES_PROFILE_IMPL_IO_DATA_H_