[cros] Initialize OOBE in parallel when boot animation is disabled.

chrome/browser/ui/webui/chromeos/login/signin_screen_handler.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_UI_WEBUI_CHROMEOS_LOGIN_SIGNIN_SCREEN_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_SIGNIN_SCREEN_HANDLER_H_
 
 #include <string>
 
 #include "base/memory/ref_counted.h"
@@ skipping 276 matching lines @@
   scoped_ptr<CaptivePortalWindowProxy> captive_portal_window_proxy_;
 
   // Test credentials.
   std::string test_user_;
   std::string test_pass_;
 
   BrowsingDataRemover* cookie_remover_;
 
   base::WeakPtrFactory<SigninScreenHandler> weak_factory_;
 
+  // Set to true once |LOGIN_WEBUI_VISIBLE| notification is observed.
+  bool webui_visible_;
+
   DISALLOW_COPY_AND_ASSIGN(SigninScreenHandler);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_SIGNIN_SCREEN_HANDLER_H_