Added code in the browser process to display a Cloud Print token expired desk...

chrome/browser/printing/cloud_print/cloud_print_proxy_service.h

 // Copyright (c) 2010 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_PRINTING_CLOUD_PRINT_CLOUD_PRINT_PROXY_SERVICE_H_
 #define CHROME_BROWSER_PRINTING_CLOUD_PRINT_CLOUD_PRINT_PROXY_SERVICE_H_
 #pragma once
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/observer_list.h"
-#include "chrome/browser/profile.h"
-
+#include "base/ref_counted.h"
 
 class Profile;
 
 // Layer between the browser user interface and the cloud print proxy code
 // running in the service process.
 class CloudPrintProxyService {
  public:
   explicit CloudPrintProxyService(Profile* profile);
   virtual ~CloudPrintProxyService();
 
   // Initializes the object. This should be called every time an object of this
   // class is constructed.
   void Initialize();
 
   // Enables/disables cloud printing for the user
   virtual void EnableForUser(const std::string& auth_token);
   virtual void DisableForUser();
 
- protected:
+  bool ShowTokenExpiredNotification();
+
+ private:
+  // NotificationDelegate implementation for the token expired notification.
+  class TokenExpiredNotificationDelegate;
+  friend class TokenExpiredNotificationDelegate;
+
+  Profile* profile_;
+  scoped_refptr<TokenExpiredNotificationDelegate> token_expired_delegate_;
+
   void Shutdown();
+  void OnTokenExpiredNotificationError();
+  void OnTokenExpiredNotificationClosed(bool by_user);
+  void OnTokenExpiredNotificationClick();
+  void TokenExpiredNotificationDone();
+
 
   DISALLOW_COPY_AND_ASSIGN(CloudPrintProxyService);
 };
 
 #endif  // CHROME_BROWSER_PRINTING_CLOUD_PRINT_CLOUD_PRINT_PROXY_SERVICE_H_