Add missing initializer for |proxy_service_| in URLRequestContext constructor.

net/url_request/url_request_context.cc

 // 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.
 
 #include "net/url_request/url_request_context.h"
 
 #include "base/string_util.h"
 #include "net/base/cookie_store.h"
 #include "net/base/host_resolver.h"
 #include "net/ftp/ftp_transaction_factory.h"
 #include "net/http/http_transaction_factory.h"
 
 namespace net {
 
 URLRequestContext::URLRequestContext()
     : is_main_(false),
       net_log_(NULL),
       host_resolver_(NULL),
       cert_verifier_(NULL),
       dnsrr_resolver_(NULL),
       dns_cert_checker_(NULL),
       http_auth_handler_factory_(NULL),
+      proxy_service_(NULL),
       network_delegate_(NULL),
       transport_security_state_(NULL),
       http_transaction_factory_(NULL),
       ftp_transaction_factory_(NULL) {
 }
 
 void URLRequestContext::CopyFrom(URLRequestContext* other) {
   // Copy URLRequestContext parameters.
   // Do not copy is_main_.
   set_net_log(other->net_log());
@@ skipping 20 matching lines @@
 }
 
 const std::string& URLRequestContext::GetUserAgent(const GURL& url) const {
   return EmptyString();
 }
 
 URLRequestContext::~URLRequestContext() {
 }
 
 }  // namespace net