Issue 5603 - Support references in parameters of exported functions

compiled/library.h

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-present 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 15 matching lines @@
   enum class Topic;
 }
 
 extern "C"
 {
   void LogString(const String& str);
   void LogInteger(int i);
   void LogPointer(const void* ptr);
   void LogError(const String& str);
   char16_t CharToLower(char16_t charCode);
-  void JSNotifyFilterChange(FilterNotifier::Topic topic, Filter* filter,
+  void JSNotifyFilterChange(FilterNotifier::Topic topic, Filter& filter,
       Subscription* subscription, unsigned int position);
   void JSNotifySubscriptionChange(FilterNotifier::Topic topic,
-      Subscription* subscription);
+      Subscription& subscription);
   int GenerateRegExp(const String& regexp, bool matchCase);
   void DeleteRegExp(int id);
   bool TestRegExp(int id, const String& str);
 }