Use AuthCredentials throughout the network stack instead of username/password.

net/http/http_stream_factory_impl_request.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_HTTP_HTTP_STREAM_FACTORY_IMPL_REQUEST_H_
 #define NET_HTTP_HTTP_STREAM_FACTORY_IMPL_REQUEST_H_
 
 #include <set>
 #include "base/memory/scoped_ptr.h"
 #include "googleurl/src/gurl.h"
@@ skipping 70 matching lines @@
                          SSLCertRequestInfo* cert_info);
   void OnHttpsProxyTunnelResponse(
       Job *job,
       const HttpResponseInfo& response_info,
       const SSLConfig& used_ssl_config,
       const ProxyInfo& used_proxy_info,
       HttpStream* stream);
 
   // HttpStreamRequest methods.
 
-  virtual int RestartTunnelWithProxyAuth(const string16& username,
-                                         const string16& password);
+  virtual int RestartTunnelWithProxyAuth(const AuthCredentials& credentials);
   virtual LoadState GetLoadState() const;
   virtual bool was_npn_negotiated() const;
   virtual bool using_spdy() const;
 
  private:
   // Used to orphan all jobs in |jobs_| other than |job| which becomes "bound"
   // to the request.
   void OrphanJobsExcept(Job* job);
 
   // Used to orphan all jobs in |jobs_|.
@@ skipping 13 matching lines @@
   bool completed_;
   bool was_npn_negotiated_;
   bool using_spdy_;
 
   DISALLOW_COPY_AND_ASSIGN(Request);
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_STREAM_FACTORY_IMPL_H_