Issue 1853 - Moved filter generation into background page

include.preload.js

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-2015 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 76 matching lines @@
   {
     return false;  // third-party
   }
 
   if (!contentDocument)
     return false;  // not a frame
 
   return contentDocument.location.protocol == "about:";
 }
 
-function resolveURL(url)
-{
-  var a = document.createElement("a");
-  a.href = url;
-  return a.href;
-}
-
 function reinjectRulesWhenRemoved(document, style)
 {
   var MutationObserver = window.MutationObserver || window.WebKitMutationObserver;
   if (!MutationObserver)
     return;
 
   var observer = new MutationObserver(function(mutations)
   {
     var isStyleRemoved = false;
     for (var i = 0; i < mutations.length; i++)
@@ skipping 156 matching lines @@
   }, true);
 
   ext.backgroundPage.sendMessage({type: "get-selectors"}, setElemhideCSSRules);
 }
 
 if (document instanceof HTMLDocument)
 {
   checkSitekey();
   init(document);
 }