Issue 3251 - Delegate processing of element hiding hits to shouldAllowAsync() so that hits show up

lib/contentPolicy.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 82 matching lines @@
     Utils.styleService.loadAndRegisterSheet(collapseStyle, Ci.nsIStyleSheetService.USER_SHEET);
     onShutdown.add(() =>
     {
       Utils.styleService.unregisterSheet(collapseStyle, Ci.nsIStyleSheetService.USER_SHEET);
     });
   },
 
   /**
    * Checks whether a node should be blocked, hides it if necessary
    * @param contentType {String}
-   * @param location {String}
-   * @param fremes {Object[]}
+   * @param location {String} location of the request, filter key if contentType is ELEMHIDE
+   * @param frames {Object[]}
    * @param isPrivate {Boolean}  true if the request belongs to a private browsing window
    * @return {Object} An object containing properties block, collapse and hits
    *                  indicating how this request should be handled.
    */
   shouldAllow: function({contentType, location, frames, isPrivate})
   {
     let hits = [];
 
     function addHit(frameIndex, contentType, docDomain, thirdParty, location, filter)
     {
@@ skipping 56 matching lines @@
               nogenericMatch);
         }
 
         if (frame == testSitekeyFrame)
           [testSitekey, testSitekeyFrame] = getSitekey(frames.slice(i + 1));
       }
     }
 
     if (!match && contentType == "ELEMHIDE")
     {
-      match = location;
+      match = ElemHide.getFilterByKey(location);
       location = match.text.replace(/^.*?#/, '#');
 
       if (!match.isActiveOnDomain(docDomain))
         return response(true, false);
 
       let exception = ElemHide.getException(match, docDomain);
       if (exception)
       {
         addHit(null, contentType, docDomain, false, location, exception);
         return response(true, false);
@@ skipping 211 matching lines @@
   if (!wnd || wnd.closed)
     return;
 
   if (entry.type == "OBJECT")
   {
     node.removeEventListener("mouseover", objectMouseEventHander, true);
     node.removeEventListener("mouseout", objectMouseEventHander, true);
   }
   Policy.processNode(wnd, node, entry.type, entry.location, true);
 }