webRequest.onAuthRequired listeners can provide authentication credentials.

net/url_request/url_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_URL_REQUEST_URL_REQUEST_H_
 #define NET_URL_REQUEST_URL_REQUEST_H_
 #pragma once
 
 #include <map>
 #include <string>
 #include <vector>
 
 #include "base/debug/leak_tracker.h"
 #include "base/logging.h"
 #include "base/memory/linked_ptr.h"
 #include "base/memory/ref_counted.h"
 #include "base/string16.h"
 #include "base/threading/non_thread_safe.h"
 #include "googleurl/src/gurl.h"
+#include "net/base/auth.h"
 #include "net/base/completion_callback.h"
 #include "net/base/load_states.h"
 #include "net/base/net_export.h"
 #include "net/base/net_log.h"
 #include "net/base/request_priority.h"
 #include "net/http/http_request_headers.h"
 #include "net/http/http_response_info.h"
 #include "net/url_request/url_request_status.h"
 
 class FilePath;
@@ skipping 675 matching lines @@
   // Called by URLRequestJob to allow interception when the final response
   // occurs.
   void NotifyResponseStarted();
 
   bool has_delegate() const { return delegate_ != NULL; }
 
   // These functions delegate to |delegate_| and may only be used if
   // |delegate_| is not NULL. See URLRequest::Delegate for the meaning
   // of these functions.
   void NotifyAuthRequired(AuthChallengeInfo* auth_info);
+  void NotifyAuthRequiredComplete(int result);
   void NotifyCertificateRequested(SSLCertRequestInfo* cert_request_info);
   void NotifySSLCertificateError(int cert_error, X509Certificate* cert);
   bool CanGetCookies(const CookieList& cookie_list) const;
   bool CanSetCookie(const std::string& cookie_line,
                     CookieOptions* options) const;
   void NotifyReadCompleted(int bytes_read);
 
   // Called when the delegate blocks or unblocks this request when intercepting
   // certain requests.
   void SetBlockedOnDelegate();
@@ skipping 71 matching lines @@
 
   // Callback passed to the network delegate to notify us when a blocked request
   // is ready to be resumed or canceled.
   CompletionCallbackImpl<URLRequest> before_request_callback_;
 
   // Safe-guard to ensure that we do not send multiple "I am completed"
   // messages to network delegate.
   // TODO(battre): Remove this. http://crbug.com/89049
   bool has_notified_completion_;
 
+  // Go out to the extension to see things.
+  AuthCredentials auth_credentials_;
+  CompletionCallbackImpl<URLRequest> auth_required_callback_;
+  scoped_refptr<AuthChallengeInfo> auth_info_;
+
   DISALLOW_COPY_AND_ASSIGN(URLRequest);
 };
 
 }  // namespace net
 
 #endif  // NET_URL_REQUEST_URL_REQUEST_H_