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

net/http/http_transaction.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_TRANSACTION_H_
 #define NET_HTTP_HTTP_TRANSACTION_H_
 #pragma once
 
-#include "base/string16.h"
 #include "net/base/completion_callback.h"
 #include "net/base/load_states.h"
 #include "net/base/net_export.h"
 
 namespace net {
 
+class AuthCredentials;
 class BoundNetLog;
 struct HttpRequestInfo;
 class HttpResponseInfo;
 class IOBuffer;
 class X509Certificate;
 class SSLHostInfo;
 
 // Represents a single HTTP transaction (i.e., a single request/response pair).
 // HTTP redirects are not followed and authentication challenges are not
 // answered.  Cookies are assumed to be managed by the caller.
@@ skipping 30 matching lines @@
   //
   // NOTE: The transaction is not responsible for deleting the callback object.
   //
   virtual int RestartIgnoringLastError(OldCompletionCallback* callback) = 0;
 
   // Restarts the HTTP transaction with a client certificate.
   virtual int RestartWithCertificate(X509Certificate* client_cert,
                                      OldCompletionCallback* callback) = 0;
 
   // Restarts the HTTP transaction with authentication credentials.
-  virtual int RestartWithAuth(const string16& username,
-                              const string16& password,
+  virtual int RestartWithAuth(const AuthCredentials& credentials,
                               OldCompletionCallback* callback) = 0;
 
   // Returns true if auth is ready to be continued. Callers should check
   // this value anytime Start() completes: if it is true, the transaction
   // can be resumed with RestartWithAuth(L"", L"", callback) to resume
   // the automatic auth exchange. This notification gives the caller a
   // chance to process the response headers from all of the intermediate
   // restarts needed for authentication.
   virtual bool IsReadyToRestartForAuth() = 0;
 
@@ skipping 37 matching lines @@
 
   // SetSSLHostInfo sets a object which reads and writes public information
   // about an SSL server. It's used to implement Snap Start.
   // TODO(agl): remove this.
   virtual void SetSSLHostInfo(SSLHostInfo*) { };
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_TRANSACTION_H_