Issue 4769 - Supporting adding whitelisted websites on ABP for Samsung Internet

src/org/adblockplus/sbrowser/contentblocker/engine/Subscriptions.java

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-2016 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 161 matching lines @@
       {
         Log.d(TAG, "Adding filters for '" + s.getId() + "'");
         s.clearFilters();
         s.deserializeFilters(this.getFiltersFile(s));
         s.getFilters(filters);
         s.clearFilters();
       }
     }
 
     final BufferedWriter w = new BufferedWriter(
-        new OutputStreamWriter(new FileOutputStream(output), "UTF-8"));
+        new OutputStreamWriter(new FileOutputStream(output), Engine.CHARSET_UTF_8));
     try
     {
       Log.d(TAG, "Writing " + filters.size() + " filters");
       Engine.writeFilterHeaders(w);
       for (final String filter : filters)
       {
         w.write(filter);
         w.write('\n');
       }
     }
@@ skipping 76 matching lines @@
     if (sub != null)
     {
       if (sub.updateSubscription(responseCode, text, httpHeaders, this.getMetaFile(sub),
           this.getFiltersFile(sub)))
       {
         this.engine.requestUpdateBroadcast();
       }
     }
   }
 }