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

src/org/adblockplus/sbrowser/contentblocker/engine/Subscription.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 371 matching lines @@
   }
 
   private static String createFilterHash(List<String> filters) throws IOException
   {
     try
     {
       final MessageDigest md5 = MessageDigest.getInstance("MD5");
       Collections.sort(filters);
       for (final String filter : filters)
       {
-        md5.update(filter.getBytes("UTF-8"));
+        md5.update(filter.getBytes(Engine.CHARSET_UTF_8));
       }
       return byteArrayToHexString(md5.digest());
     }
     catch (final NoSuchAlgorithmException e)
     {
       throw new IOException("MD5 is unavailable: " + e.getMessage(), e);
     }
   }
 
   public void serializeMetaData(final File metaFile) throws IOException
@@ skipping 227 matching lines @@
     this.serializeMetaData(metaFile);
     if (filtersChanged)
     {
       this.serializeFilters(filtersFile);
       this.clearFilters();
     }
 
     return filtersChanged;
   }
 }