Issue 656 - Replace some __proto__ with Object.create

lib/utils.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 521 matching lines @@
 };
 
 /**
  * A cache with a fixed capacity, newer entries replace entries that have been
  * stored first.
  * @constructor
  */
 function Cache(/**Integer*/ size)
 {
   this._ringBuffer = new Array(size);
-  this.data = {__proto__: null};
+  this.data = Object.create(null);
 }
 exports.Cache = Cache;
 
 Cache.prototype =
 {
   /**
    * Ring buffer storing hash keys, allows determining which keys need to be
    * evicted.
    * @type Array
    */
@@ skipping 33 matching lines @@
 
     this.data[key] = value;
   },
 
   /**
    * Clears cache contents.
    */
   clear: function()
   {
     this._ringBuffer = new Array(this._ringBuffer.length);
-    this.data = {__proto__: null};
+    this.data = Object.create(null);
   }
 }
 
 // Getters for common services, this should be replaced by Services.jsm in future
 
 XPCOMUtils.defineLazyServiceGetter(Utils, "categoryManager", "@mozilla.org/categorymanager;1", "nsICategoryManager");
 XPCOMUtils.defineLazyServiceGetter(Utils, "ioService", "@mozilla.org/network/io-service;1", "nsIIOService");
 XPCOMUtils.defineLazyServiceGetter(Utils, "promptService", "@mozilla.org/embedcomp/prompt-service;1", "nsIPromptService");
 XPCOMUtils.defineLazyServiceGetter(Utils, "effectiveTLD", "@mozilla.org/network/effective-tld-service;1", "nsIEffectiveTLDService");
 XPCOMUtils.defineLazyServiceGetter(Utils, "netUtils", "@mozilla.org/network/util;1", "nsINetUtil");
@@ skipping 171 matching lines @@
     Cu.reportError(e);
     // Expected, ctypes isn't supported in Gecko 1.9.2
     return null;
   }
 });
 
 if ("@mozilla.org/messenger/headerparser;1" in Cc)
   XPCOMUtils.defineLazyServiceGetter(Utils, "headerParser", "@mozilla.org/messenger/headerparser;1", "nsIMsgHeaderParser");
 else
   Utils.headerParser = null;