[cros] Display emails of users are stored in a separate dictionary in Local State.

chrome/browser/chromeos/login/login_display.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.
 
 #ifndef CHROME_BROWSER_CHROMEOS_LOGIN_LOGIN_DISPLAY_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_LOGIN_DISPLAY_H_
 #pragma once
 
 #include <string>
 #include <vector>
 
 #include "base/string16.h"
 #include "chrome/browser/chromeos/login/help_app_launcher.h"
+#include "chrome/browser/chromeos/login/remove_user_delegate.h"
 #include "chrome/browser/chromeos/login/user.h"
+#include "chrome/browser/chromeos/login/user_manager.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/gfx/rect.h"
 
 namespace chromeos {
 
-// Delegate to be used while user removing.
-class RemoveUserDelegate {
- public:
-  // Called right before actual user removal process is initiated.
-  virtual void OnBeforeUserRemoved(const std::string& username) = 0;
-
-  // Called right after user removal process has been initiated.
-  virtual void OnUserRemoved(const std::string& username) = 0;
-};
-
 // TODO(nkostylev): Extract interface, create a BaseLoginDisplay class.
 // An abstract class that defines login UI implementation.
 class LoginDisplay : public RemoveUserDelegate {
  public:
   class Delegate {
    public:
     // Create new Google account.
     virtual void CreateAccount() = 0;
 
     // Returns name of the currently connected network.
     virtual string16 GetConnectedNetworkName() = 0;
 
     // Users decides to sign in into captive portal.
     virtual void FixCaptivePortal() = 0;
 
+    // Sets the displayed email for the next login attempt with |CompleteLogin|.
+    // If it succeeds, user's displayed email value will be updated to |email|.
+    virtual void SetDisplayEmail(const std::string& email) = 0;
+
     // Complete sign process with specified |username| and |password|.
     // Used for new users authenticated through an extension.
     virtual void CompleteLogin(const std::string& username,
                                const std::string& password) = 0;
 
     // Sign in using |username| and |password| specified.
-    // Used for both known and new users.
+    // Used for both known users only.
     virtual void Login(const std::string& username,
                        const std::string& password) = 0;
 
     // Sign in into Guest session.
     virtual void LoginAsGuest() = 0;
 
     // Called when existing user pod is selected in the UI.
     virtual void OnUserSelected(const std::string& username) = 0;
 
     // Called when the user requests enterprise enrollment.
@@ skipping 60 matching lines @@
 
   // Bounds of the login UI background.
   gfx::Rect background_bounds_;
 
   DISALLOW_COPY_AND_ASSIGN(LoginDisplay);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_LOGIN_DISPLAY_H_