ChromeOS: user whitelist check should happen before entering password.

chrome/browser/chromeos/login/ui/login_display.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_UI_LOGIN_DISPLAY_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_UI_LOGIN_DISPLAY_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 75 matching lines @@
     // 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;
 
     // Returns name of the currently connected network, for error message,
     virtual base::string16 GetConnectedNetworkName() = 0;
 
     // Restarts the public-session auto-login timer if it is running.
     virtual void ResetPublicSessionAutoLoginTimer() = 0;
 
+    // Returns true if user is allowed to log in by domain policy.
+    virtual bool IsUserWhitelisted(const std::string& user_id) = 0;
+
    protected:
     virtual ~Delegate();
   };
 
   // |background_bounds| determines the bounds of login UI background.
   LoginDisplay(Delegate* delegate, const gfx::Rect& background_bounds);
   virtual ~LoginDisplay();
 
   // Clears and enables fields on user pod or GAIA frame.
   virtual void ClearAndEnablePassword() = 0;
@@ skipping 68 matching lines @@
   // in redesigned login stack.
   // Login stack (and this object) will be recreated for next user sign in.
   bool is_signin_completed_;
 
   DISALLOW_COPY_AND_ASSIGN(LoginDisplay);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_UI_LOGIN_DISPLAY_H_