Make --allow-cross-domain-auth-prompt equivalent to a preference.

chrome/browser/browser_process.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.
 
 // This interface is for managing the global services of the application. Each
 // service is lazily created when requested the first time. The service getters
 // will return NULL if the service is not available, so callers must check for
 // this condition.
 
 #ifndef CHROME_BROWSER_BROWSER_PROCESS_H_
@@ skipping 190 matching lines @@
 
   // Returns an object which handles communication with the SafeBrowsing
   // client-side detection servers.
   virtual safe_browsing::ClientSideDetectionService*
       safe_browsing_detection_service() = 0;
 
   // Returns the state of the disable plugin finder policy. Callable only on
   // the IO thread.
   virtual bool plugin_finder_disabled() const = 0;
 
+  // Returns the state of the allow cross origin auth prompt policy.  Callable
+  // only on the IO thread.
+  virtual bool allow_cross_origin_auth_prompt() const = 0;
+
 #if (defined(OS_WIN) || defined(OS_LINUX)) && !defined(OS_CHROMEOS)
   // This will start a timer that, if Chrome is in persistent mode, will check
   // whether an update is available, and if that's the case, restart the
   // browser. Note that restart code will strip some of the command line keys
   // and all loose values from the cl this instance of Chrome was launched with,
   // and add the command line key that will force Chrome to start in the
   // background mode. For the full list of "blacklisted" keys, refer to
   // |kSwitchesToRemoveOnAutorestart| array in browser_process_impl.cc.
   virtual void StartAutoupdateTimer() = 0;
 #endif
@@ skipping 21 matching lines @@
 
   // Used for testing plugin data removal at shutdown.
   std::string plugin_data_remover_mime_type_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserProcess);
 };
 
 extern BrowserProcess* g_browser_process;
 
 #endif  // CHROME_BROWSER_BROWSER_PROCESS_H_