Simplify infobar expiry.

chrome/browser/notifications/desktop_notification_infobar_delegate.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_NOTIFICATIONS_DESKTOP_NOTIFICATION_INFOBAR_DELEGATE_H_
 #define CHROME_BROWSER_NOTIFICATIONS_DESKTOP_NOTIFICATION_INFOBAR_DELEGATE_H_
 
 #include <string>
 
 #include "chrome/browser/content_settings/permission_infobar_delegate.h"
 
 class DesktopNotificationInfoBarDelegate : public PermissionInfobarDelegate {
  public:
   // Creates a Notification permission infobar and delegate and adds the
   // infobar to |infobar_service|.  Returns the infobar if it was successfully
   // added.
   static infobars::InfoBar* Create(InfoBarService* infobar_service,
                                    PermissionQueueController* controller,
                                    const PermissionRequestID& id,
                                    const GURL& requesting_frame,
                                    const std::string& display_languages);
  private:
   DesktopNotificationInfoBarDelegate(PermissionQueueController* controller,
                                      const PermissionRequestID& id,
                                      const GURL& requesting_frame,
-                                     int contents_unique_id,
                                      const std::string& display_languages);
   ~DesktopNotificationInfoBarDelegate() override;
 
   // PermissionInfoBarDelegate:
   int GetIconID() const override;
   base::string16 GetMessageText() const override;
 
   GURL requesting_frame_;
   std::string display_languages_;
 
   DISALLOW_COPY_AND_ASSIGN(DesktopNotificationInfoBarDelegate);
 };
 
 #endif  // CHROME_BROWSER_NOTIFICATIONS_DESKTOP_NOTIFICATION_INFOBAR_DELEGATE_H_