Issue 153 - Added tests for io.js and updated filter storage tests

chrome/content/common.js

 const Cc = Components.classes;
 const Ci = Components.interfaces;
 const Cr = Components.results;
 const Cu = Components.utils;
 
 const MILLIS_IN_SECOND = 1000;
 const MILLIS_IN_MINUTE = 60 * MILLIS_IN_SECOND;
 const MILLIS_IN_HOUR = 60 * MILLIS_IN_MINUTE;
 const MILLIS_IN_DAY = 24 * MILLIS_IN_HOUR;
 
@@ skipping 27 matching lines @@
 
 let {Filter, InvalidFilter, CommentFilter, ActiveFilter, RegExpFilter,
      BlockingFilter, WhitelistFilter, ElemHideBase, ElemHideFilter, ElemHideException} = require("filterClasses");
 let {Subscription, SpecialSubscription, RegularSubscription,
      ExternalSubscription, DownloadableSubscription} = require("subscriptionClasses");
 let {defaultMatcher, Matcher, CombinedMatcher} = require("matcher");
 let {FilterListener} = require("filterListener");
 let {FilterNotifier} = require("filterNotifier");
 let {FilterStorage} = require("filterStorage");
 let {ElemHide} = require("elemHide");
+let {IO} = require("io");
 let {Notification} = require("notification");
 let {Prefs} = require("prefs");
 let {RequestNotifier} = require("requestNotifier");
 let {Synchronizer} = require("synchronizer");
 let {UI} = require("ui");
 let {Utils} = require("utils");
 
 let geckoVersion = Services.appinfo.platformVersion;
 function compareGeckoVersion(version)
 {
@@ skipping 489 matching lines @@
     return oldFinish.apply(this, arguments);
   }
   window.addEventListener("unload", function()
   {
     debuggerService.off();
   }, true);
   debuggerService.on();
   debuggerService.flags |= debuggerService.COLLECT_PROFILE_DATA;
   debuggerService.clearProfileData();
 }