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

chrome/browser/ui/webui/chromeos/login/signin_screen_handler.h

 // Copyright (c) 2013 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_SIGNIN_SCREEN_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_SIGNIN_SCREEN_HANDLER_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 171 matching lines @@
   // Whether user sign in has completed.
   virtual bool IsUserSigninCompleted() const = 0;
 
   // Request to (re)load user list.
   virtual void HandleGetUsers() = 0;
 
   // Runs an OAuth token validation check for user.
   virtual void CheckUserStatus(const AccountId& account_id) = 0;
 
   // Returns true if user is allowed to log in by domain policy.
-  virtual bool IsUserWhitelisted(const std::string& user_id) = 0;
+  virtual bool IsUserWhitelisted(const AccountId& account_id) = 0;
 
  protected:
   virtual ~SigninScreenHandlerDelegate() {}
 };
 
 // A class that handles the WebUI hooks in sign-in screen in OobeDisplay
 // and LoginDisplay.
 class SigninScreenHandler
     : public BaseScreenHandler,
       public LoginDisplayWebUIHandler,
@@ skipping 282 matching lines @@
   scoped_ptr<ErrorScreensHistogramHelper> histogram_helper_;
 
   base::WeakPtrFactory<SigninScreenHandler> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SigninScreenHandler);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_SIGNIN_SCREEN_HANDLER_H_