webRequest.onAuthRequired listeners can provide authentication credentials.

net/url_request/url_request_test_util.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_URL_REQUEST_URL_REQUEST_TEST_UTIL_H_
 #define NET_URL_REQUEST_URL_REQUEST_TEST_UTIL_H_
 #pragma once
 
 #include <stdlib.h>
 
@@ skipping 189 matching lines @@
   virtual void OnBeforeRedirect(net::URLRequest* request,
                                 const GURL& new_location);
   virtual void OnResponseStarted(net::URLRequest* request);
   virtual void OnRawBytesRead(const net::URLRequest& request, int bytes_read);
   virtual void OnCompleted(net::URLRequest* request);
   virtual void OnURLRequestDestroyed(net::URLRequest* request);
   virtual void OnHttpTransactionDestroyed(uint64 request_id);
   virtual net::URLRequestJob* OnMaybeCreateURLRequestJob(
       net::URLRequest* request);
   virtual void OnPACScriptError(int line_number, const string16& error);
-  virtual void OnAuthRequired(net::URLRequest* request,
-                              const net::AuthChallengeInfo& auth_info);
+  virtual int OnAuthRequired(net::URLRequest* request,
+                             const net::AuthChallengeInfo& auth_info,
+                             net::CompletionCallback* callback,
+                             net::AuthCredentials* credentials);
 
   void InitRequestStatesIfNew(int request_id);
 
   int last_error_;
   int error_count_;
   int created_requests_;
   int destroyed_requests_;
   int completed_requests_;
 
   // net::NetworkDelegate callbacks happen in a particular order (e.g.
   // OnBeforeURLRequest is always called before OnBeforeSendHeaders).
   // This bit-set indicates for each request id (key) what events may be sent
   // next.
   std::map<int, int> next_states_;
 
   // A log that records for each request id (key) the order in which On...
   // functions were called.
   std::map<int, std::string> event_order_;
 };
 
 #endif  // NET_URL_REQUEST_URL_REQUEST_TEST_UTIL_H_