ChromeOS: Show the new POD RE-AUTH ICON when users needs to re-auth

chrome/browser/chromeos/login/screens/user_selection_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_SCREENS_USER_SELECTION_SCREEN_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_USER_SELECTION_SCREEN_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 37 matching lines @@
 
   virtual void Init(const user_manager::UserList& users, bool show_guest);
   const user_manager::UserList& GetUsers() const;
   void OnUserImageChanged(const user_manager::User& user);
   void OnBeforeUserRemoved(const std::string& username);
   void OnUserRemoved(const std::string& username);
 
   void OnPasswordClearTimerExpired();
 
   void HandleGetUsers();
-  void CheckUserStatus(const std::string& user_id);
+
+  // Returns true if user check has started possible, otherwise it returns
+  // false. Note, that "false" may be a temporary status, as other check
+  // request for this user might be in progress.
+  bool CheckUserStatus(const std::string& user_id);
 
   // ui::UserActivityDetector implementation:
   void OnUserActivity(const ui::Event* event) override;
 
   void InitEasyUnlock();
 
   // proximity_auth::ScreenlockBridge::LockHandler implementation:
   void ShowBannerMessage(const base::string16& message) override;
   void ShowUserPodCustomIcon(
       const std::string& user_email,
@@ skipping 47 matching lines @@
 
   // Map from public session user IDs to recommended locales set by policy.
   typedef std::map<std::string, std::vector<std::string> >
       PublicSessionRecommendedLocaleMap;
   PublicSessionRecommendedLocaleMap public_session_recommended_locales_;
 
  private:
   EasyUnlockService* GetEasyUnlockServiceForUser(
       const std::string& user_id) const;
 
+  // Run CheckUserStatus() on all users.
+  void CheckAllUserStatuses();
+
   void OnUserStatusChecked(const user_manager::UserID& user_id,
                            TokenHandleUtil::TokenHandleStatus status);
 
   // Whether to show guest login.
   bool show_guest_;
 
   // Purpose of the screen (see constants in OobeUI).
   const std::string display_type_;
 
   // Set of Users that are visible.
@@ skipping 11 matching lines @@
   scoped_ptr<TokenHandleUtil> token_handle_util_;
 
   base::WeakPtrFactory<UserSelectionScreen> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(UserSelectionScreen);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_USER_SELECTION_SCREEN_H_