Disable repeated signin as manager.

chrome/browser/chromeos/login/supervised/supervised_user_creation_screen.h

 // Copyright 2014 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 CHROME_BROWSER_CHROMEOS_LOGIN_SUPERVISED_SUPERVISED_USER_CREATION_SCREEN_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_SUPERVISED_SUPERVISED_USER_CREATION_SCREEN_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 116 matching lines @@
  private:
   void ApplyPicture();
   void OnGetSupervisedUsers(const base::DictionaryValue* users);
 
   SupervisedUserCreationScreenHandler* actor_;
 
   scoped_ptr<SupervisedUserCreationController> controller_;
   scoped_ptr<base::DictionaryValue> existing_users_;
 
   bool on_error_screen_;
+  bool manager_signin_in_progress_;
   std::string last_page_;
 
   SupervisedUserSyncService* sync_service_;
 
   gfx::ImageSkia user_photo_;
   scoped_refptr<ImageDecoder> image_decoder_;
   bool apply_photo_after_decoding_;
   int selected_image_;
 
   base::WeakPtrFactory<SupervisedUserCreationScreen> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SupervisedUserCreationScreen);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_SUPERVISED_SUPERVISED_USER_CREATION_SCREEN_H_