Issue 4036 - Speed up addElemHideSelectors for Chrome >50

include.preload.js

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-2016 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 441 matching lines @@
       {
         var subSelectors = splitSelector(selectors[i]);
         for (var j = 0; j < subSelectors.length; j++)
           preparedSelectors.push("::content " + subSelectors[j]);
       }
       selectors = preparedSelectors;
     }
 
     // WebKit (and Blink?) apparently chokes when the selector list in a
     // CSS rule is huge. So we split the elemhide selectors into groups.
-    while (selectors.length > 0)
+    for (var i = 0; i < selectors.length; i += SELECTOR_GROUP_SIZE)
     {
-      var selector = selectors.splice(0, SELECTOR_GROUP_SIZE).join(", ");
+      var selector = selectors.slice(i, i + SELECTOR_GROUP_SIZE).join(", ");
       style.sheet.addRule(selector, "display: none !important;");
     }
   };
 
   var updateStylesheet = function()
   {
     var selectors = null;
     var CSSPropertyFiltersLoaded = false;
 
     var checkLoaded = function()
@@ skipping 77 matching lines @@
   }, true);
 
   return updateStylesheet;
 }
 
 if (document instanceof HTMLDocument)
 {
   checkSitekey();
   window.updateStylesheet = init(document);
 }