Issue 5159 - Expose collapse property for BlockingFilter

compiled/filter/RegExpFilter.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 20 matching lines @@
     mutable int mRegexpId;
     mutable String::size_type mPatternEnd;
   };
   mutable String::size_type mDomainsStart;
   mutable String::size_type mDomainsEnd;
   mutable String::size_type mSitekeysStart;
   mutable String::size_type mSitekeysEnd;
   int mContentType;
   bool mMatchCase;
   TrippleState mThirdParty;
-  TrippleState mCollapse;
+  bool mCollapse;
 
   bool RegExpParsingDone() const
   {
     return mPatternStart == String::npos;
   }
 
   void SetRegExp(int regexpId) const
   {
     mRegexpId = regexpId;
     mPatternStart = String::npos;
@@ skipping 52 matching lines @@
   SitekeySet* GetSitekeys() const override;
 public:
   explicit RegExpFilter(Type type, const String& text, const RegExpFilterData& data);
   ~RegExpFilter();
   static Type Parse(DependentString& text, DependentString& error,
       RegExpFilterData& data);
   static void GenerateCustomBindings();
   bool BINDINGS_EXPORTED Matches(const String& location, int typeMask,
       DependentString& docDomain, bool thirdParty, const String& sitekey) const;
 };