Remove unnecessary references to URLRequestContext.

net/proxy/dhcp_proxy_script_fetcher_win.h

 // Copyright (c) 2011 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 NET_PROXY_DHCP_PROXY_SCRIPT_FETCHER_WIN_H_
 #define NET_PROXY_DHCP_PROXY_SCRIPT_FETCHER_WIN_H_
 #pragma once
 
 #include <set>
 #include <string>
@@ skipping 136 matching lines @@
 
   // Pointer to string we will write results to. Not valid in states
   // START and DONE.
   string16* destination_string_;
 
   // PAC URL retrieved from DHCP, if any. Valid only in state STATE_DONE.
   GURL pac_url_;
 
   base::OneShotTimer<DhcpProxyScriptFetcherWin> wait_timer_;
 
-  scoped_refptr<URLRequestContext> url_request_context_;
+  URLRequestContext* const url_request_context_;
 
   // NULL or the AdapterQuery currently in flight.
   scoped_refptr<AdapterQuery> last_query_;
 
   // Time |Fetch()| was last called, 0 if never.
   base::TimeTicks fetch_start_time_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(DhcpProxyScriptFetcherWin);
 };
 
 }  // namespace net
 
 #endif  // NET_PROXY_DHCP_PROXY_SCRIPT_FETCHER_WIN_H_