Issue 5603 - Support references in parameters of exported functions

compiled/subscription/UserDefinedSubscription.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 10 matching lines @@
 #include "../filter/Filter.h"
 #include "../bindings/runtime.h"
 
 class UserDefinedSubscription : public Subscription
 {
 private:
   int mDefaults;
 
 public:
   explicit UserDefinedSubscription(const String& id);
-  bool BINDINGS_EXPORTED IsDefaultFor(const Filter* filter) const;
-  void BINDINGS_EXPORTED MakeDefaultFor(const Filter* filter);
+  bool BINDINGS_EXPORTED IsDefaultFor(const Filter& filter) const;
+  void BINDINGS_EXPORTED MakeDefaultFor(const Filter& filter);
   bool BINDINGS_EXPORTED IsGeneric() const
   {
     return mDefaults == 0;
   }
-  void BINDINGS_EXPORTED InsertFilterAt(Filter* filter, unsigned pos);
+  void BINDINGS_EXPORTED InsertFilterAt(Filter& filter, unsigned pos);
   bool BINDINGS_EXPORTED RemoveFilterAt(unsigned pos);
   OwnedString BINDINGS_EXPORTED Serialize() const;
 };
 
 template<>
 inline UserDefinedSubscription* Subscription::As<UserDefinedSubscription>()
 {
   if (mType != Type::USERDEFINED)
     return nullptr;
 
   return static_cast<UserDefinedSubscription*>(this);
 }