Fix bug with login-prompt-visible not being sent in some rare cases.

chrome/browser/chromeos/login/webui_login_view.h

 // Copyright (c) 2012 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_WEBUI_LOGIN_VIEW_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_WEBUI_LOGIN_VIEW_H_
 
 #include <map>
 #include <string>
 
@@ skipping 130 matching lines @@
 
   // Maps installed accelerators to OOBE webui accelerator identifiers.
   AccelMap accel_map_;
 
   // Whether the host window is frozen.
   bool host_window_frozen_;
 
   // True when WebUI is being initialized hidden.
   bool is_hidden_;
 
-  // True when NOTIFICATION_LOGIN_WEBUI_VISIBLE notification has fired.
-  bool login_visible_notification_fired_;
-
   // True is login-prompt-visible event has been already handled.
   bool login_prompt_visible_handled_;
 
   // Should we emit the login-prompt-visible signal when the login page is
   // displayed?
   bool should_emit_login_prompt_visible_;
 
   DISALLOW_COPY_AND_ASSIGN(WebUILoginView);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_WEBUI_LOGIN_VIEW_H_