Issue 1107 - Support notifications

include/AdblockPlus/FilterEngine.h

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-2015 Eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 222 matching lines @@
 
     /**
      * Retrieves all recommended subscriptions.
      * @return List of recommended subscriptions.
      */
     std::vector<SubscriptionPtr> FetchAvailableSubscriptions() const;
 
     /**
      * Determines which notification is to be shown next.
      * @param url URL to match notifications to (optional).
-     * @return Notification to be shown, or null if there is no any.
-     */
-    std::tr1::shared_ptr<Notification> GetNextNotificationToShow(
+     * @return Notification to be shown, or `null` if there is no any.
+     */
+    NotificationPtr GetNextNotificationToShow(
       const std::string& url = std::string());
 
     /**
      * Checks if any active filter matches the supplied URL.
      * @param url URL to match.
      * @param contentType Content type of the requested resource.
      * @param documentUrl URL of the document requesting the resource.
      *        Note that there will be more than one document if frames are
      *        involved, see
      *        Matches(const std::string&, const std::string&, const std::vector<std::string>&) const.
@@ skipping 127 matching lines @@
                                ContentType contentType,
                                const std::string& documentUrl) const;
     void UpdateAvailable(UpdateAvailableCallback callback, JsValueList& params);
     void UpdateCheckDone(const std::string& eventName,
                          UpdateCheckDoneCallback callback, JsValueList& params);
     void FilterChanged(FilterChangeCallback callback, JsValueList& params);
   };
 }
 
 #endif