Issue 656 - Replace some __proto__ with Object.create

lib/timeline.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
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 /**
  * @fileOverview Debugging module used for load time measurements.
  */
 
 let nestingCounter = 0;
 let firstTimeStamp = null;
 let lastTimeStamp = null;
 
-let asyncActions = {__proto__: null};
+let asyncActions = Object.create(null);
 
 /**
  * Time logging module, used to measure startup time of Adblock Plus (development builds only).
  * @class
  */
 let TimeLine = exports.TimeLine = {
   /**
    * Logs an event to console together with the time it took to get there.
    */
   log: function(/**String*/ message, /**Boolean*/ _forceDisplay)
@@ skipping 109 matching lines @@
       let message = "Async action " + asyncAction + " done";
       let padding = [];
       for (let i = message.toString().length; i < 80; i++)
         padding.push(" ");
       dump("[" + now + "] ABP timeline: " + message + padding.join("") + "\t (" + action.total + "/" + diff + ")\n");
     }
     else
       dump("ABP timeline: Warning: Async action " + asyncAction + " is unknown\n");
   }
 };