Issue 189 - Implement API changes from #117, #153, #192 in libadblockplus

lib/prefs.js

 /*
  * This file is part of Adblock Plus <http://adblockplus.org/>,
  * Copyright (C) 2006-2014 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 43 matching lines @@
   {
     if (typeof value != typeof defaults[key])
       throw new Error("Attempt to change preference type");
 
     if (value == defaults[key])
       delete values[key];
     else
       values[key] = value;
     save();
 
-    for each (let listener in listeners)
+    for (let listener of listeners)
       listener(key);
   });
 }
 
 function load()
 {
   _fileSystem.read(path, function(result)
   {
     // prefs.json is expected to be missing, ignore errors reading file
     if (!result.error)
@@ skipping 46 matching lines @@
     let index = listeners.indexOf(listener);
     if (index >= 0)
       listeners.splice(index, 1);
   },
 };
 
 for (let key in defaults)
   defineProperty(key);
 
 load();