Remove some configuration from the extension URLRequestContexts.

chrome/browser/profiles/off_the_record_profile_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_OFF_THE_RECORD_PROFILE_IO_DATA_H_
 #define CHROME_BROWSER_PROFILES_OFF_THE_RECORD_PROFILE_IO_DATA_H_
 
 #include <memory>
 #include <string>
 
@@ skipping 123 matching lines @@
           protocol_handler_interceptor,
       content::ProtocolHandlerMap* protocol_handlers,
       content::URLRequestInterceptorScopedVector request_interceptors)
       const override;
   net::URLRequestContext* AcquireIsolatedMediaRequestContext(
       net::URLRequestContext* app_context,
       const StoragePartitionDescriptor& partition_descriptor) const override;
 
   mutable std::unique_ptr<net::CookieStore> extensions_cookie_store_;
 
-  mutable std::unique_ptr<net::URLRequestJobFactory> extensions_job_factory_;
-
   DISALLOW_COPY_AND_ASSIGN(OffTheRecordProfileIOData);
 };
 
 #endif  // CHROME_BROWSER_PROFILES_OFF_THE_RECORD_PROFILE_IO_DATA_H_