webRequest.onAuthRequired listeners can provide authentication credentials.

chrome/browser/extensions/extension_webrequest_api_constants.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 "chrome/browser/extensions/extension_webrequest_api_constants.h"
 
 namespace extension_webrequest_api_constants {
 
 const char kChallengerKey[] = "challenger";
 const char kErrorKey[] = "error";
@@ skipping 11 matching lines @@
 const char kTimeStampKey[] = "timeStamp";
 const char kTypeKey[] = "type";
 const char kUrlKey[] = "url";
 const char kRequestHeadersKey[] = "requestHeaders";
 const char kResponseHeadersKey[] = "responseHeaders";
 const char kHeaderNameKey[] = "name";
 const char kHeaderValueKey[] = "value";
 const char kIsProxyKey[] = "isProxy";
 const char kSchemeKey[] = "scheme";
 const char kRealmKey[] = "realm";
+const char kAuthCredentialsKey[] = "authCredentials";
+const char kUsernameKey[] = "username";
+const char kPasswordKey[] = "password";
 
 const char kOnBeforeRedirect[] = "experimental.webRequest.onBeforeRedirect";
 const char kOnBeforeRequest[] = "experimental.webRequest.onBeforeRequest";
 const char kOnBeforeSendHeaders[] =
     "experimental.webRequest.onBeforeSendHeaders";
 const char kOnCompleted[] = "experimental.webRequest.onCompleted";
 const char kOnErrorOccurred[] = "experimental.webRequest.onErrorOccurred";
 const char kOnHeadersReceived[] = "experimental.webRequest.onHeadersReceived";
 const char kOnResponseStarted[] = "experimental.webRequest.onResponseStarted";
 const char kOnSendHeaders[] = "experimental.webRequest.onSendHeaders";
 const char kOnAuthRequired[] = "experimental.webRequest.onAuthRequired";
 
 
 const char kInvalidRedirectUrl[] = "redirectUrl '*' is not a valid URL.";
 const char kInvalidBlockingResponse[] =
     "cancel cannot be true in the presence of other keys.";
 const char kInvalidRequestFilterUrl[] = "'*' is not a valid URL pattern.";
 
 }  // namespace extension_webrequest_api_constants