Issue 4552 - Drop jshydra dependency (adblockpluschrome)

lib/io.js

 /*
  * 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 24 matching lines @@
     else
       errorCallback(new Error("File doesn't exist"));
   });
 }
 
 function saveFile(file, data, callback)
 {
   ext.storage.set(
     fileToKey(file),
     {
-      content: data,
+      content: Array.from(data),
       lastModified: Date.now()
     },
     callback
   );
 }
 
 exports.IO =
 {
   resolveFilePath: function(path)
   {
@@ skipping 53 matching lines @@
     {
       callback(null, {
         exists: true,
         lastModified: entry.lastModified
       });
     }
 
     loadFile(file, onLoaded, callback);
   }
 };