This CL replaces e-mail with AccountId in easy signin code.

chrome/browser/ui/webui/chromeos/login/supervised_user_creation_screen_handler.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_UI_WEBUI_CHROMEOS_LOGIN_SUPERVISED_USER_CREATION_SCREEN_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_SUPERVISED_USER_CREATION_SCREEN_HANDLER_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
@@ skipping 14 matching lines @@
    public:
     virtual ~Delegate() {}
 
     // This method is called, when actor is being destroyed. Note, if Delegate
     // is destroyed earlier then it has to call SetDelegate(NULL).
     virtual void OnActorDestroyed(
         SupervisedUserCreationScreenHandler* actor) = 0;
 
     // Starts supervised user creation flow, with manager identified by
     // |manager_id| and |manager_password|.
-    virtual void AuthenticateManager(const std::string& manager_id,
+    virtual void AuthenticateManager(const AccountId& manager_id,

[achuithb, 2015/12/04 10:12:53]

manager_account_id?

[Alexander Alekseev, 2015/12/04 12:44:07]

Done.

                                      const std::string& manager_password) = 0;
 
     // Starts supervised user creation flow, with supervised user that would
     // have |display_name| and authenticated by the |supervised_user_password|.
     virtual void CreateSupervisedUser(
         const base::string16& display_name,
         const std::string& supervised_user_password) = 0;
 
     // Look up if user with name |display_name| already exist and can be
     // imported. Returns user ID in |out_id|. Returns true if user was found,
@@ skipping 87 matching lines @@
   void UpdateText(const std::string& element_id, const base::string16& text);
 
   Delegate* delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(SupervisedUserCreationScreenHandler);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_SUPERVISED_USER_CREATION_SCREEN_HANDLER_H_