Added Safari Support

lib/stats.js

 /*
  * This file is part of Adblock Plus <http://adblockplus.org/>,
  * Copyright (C) 2006-2013 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 11 matching lines @@
 let {Prefs} = require("prefs");
 let {BlockingFilter} = require("filterClasses");
 let {FilterNotifier} = require("filterNotifier");
 
 /**
  * Get statistics for specified tab
  * @param  {String} key   field key
  * @param  {Number} tabId tab ID (leave undefined for total stats)
  * @return {Number}       field value
  */
-let getStats = exports.getStats = function getStats(key, tabId)
+let getStats = exports.getStats = function getStats(key, tab)
 {
-  if (tabId)
-  {
-    let frameData = getFrameData(tabId, 0);
-    return (frameData && key in frameData ? frameData[key] : 0);
-  }
-  else
+  if (!tab)
     return (key in Prefs.stats_total ? Prefs.stats_total[key] : 0);
+
+  let frameData = getFrameData(tab, 0);
+  return (frameData && key in frameData ? frameData[key] : 0);
 };
 
 FilterNotifier.addListener(function(action, item, newValue, oldValue, tab)
 {
   if (action != "filter.hitCount")
     return;
   
   var blocked = item instanceof BlockingFilter;
   
   // Increment counts
   if (blocked)
   {
     if ("blocked" in Prefs.stats_total)
       Prefs.stats_total.blocked++;
     else
       Prefs.stats_total.blocked = 1;
     Prefs.stats_total = Prefs.stats_total;
     
     let frameData = getFrameData(tab, 0);
     if (frameData)
     {
       if ("blocked" in frameData)
         frameData.blocked++;
       else
         frameData.blocked = 1;
     }
   }
 });