Noissue - fix headers in order to compile on MS Windows

include/AdblockPlus/IFileSystem.h

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-2017 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
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 #ifndef ADBLOCK_PLUS_IFILE_SYSTEM_H
 #define ADBLOCK_PLUS_IFILE_SYSTEM_H
 
 #include <istream>
-#include <stdint.h>
+#include <cstdint>
 #include <string>
 #include <memory>
 #include <vector>
+#include <functional>
 
 namespace AdblockPlus
 {
   /**
    * File system interface.
    */
   class IFileSystem
   {
   public:
     /**
@@ skipping 106 matching lines @@
     virtual std::string Resolve(const std::string& path) const = 0;
   };
 
   /**
    * Shared smart pointer to a `IFileSystem` instance.
    */
   typedef std::shared_ptr<IFileSystem> FileSystemPtr;
 }
 
 #endif