Fixed error screen behaviour when gaia frame loading is timed out.

chrome/browser/ui/webui/chromeos/login/error_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_ERROR_SCREEN_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_ERROR_SCREEN_HANDLER_H_
 
 #include "base/cancelable_callback.h"
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
@@ skipping 110 matching lines @@
   }
   void set_last_network_state(NetworkStateInformer::State state) {
     last_network_state_ = state;
   }
 
   // WebUI message handlers.
   void HandleFixCaptivePortal(const base::ListValue* args);
   void HandleShowCaptivePortal(const base::ListValue* args);
   void HandleHideCaptivePortal(const base::ListValue* args);
   void HandleErrorScreenUpdate(const base::ListValue* args);
+  void HandleShowLoadingTimeoutError(const base::ListValue* args);
   void HandleUpdateGaiaIsLocal(const base::ListValue* args);
 
   // WebUIMessageHandler implementation:
   virtual void RegisterMessages() OVERRIDE;
 
   // BaseScreenHandler implementation:
   virtual void GetLocalizedStrings(
       base::DictionaryValue* localized_strings) OVERRIDE;
   virtual void Initialize() OVERRIDE;
   virtual gfx::NativeWindow GetNativeWindow() OVERRIDE;
@@ skipping 15 matching lines @@
 
   // NativeWindowDelegate used to get reference to NativeWindow.
   NativeWindowDelegate* native_window_delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(ErrorScreenHandler);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_ERROR_SCREEN_HANDLER_H_