Topic 11337 - More reliable approach to hide image/frame placeholders

webrequest.js

 /*
  * This file is part of the Adblock Plus extension,
  * Copyright (C) 2006-2012 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 157 matching lines @@
   if (isFrameWhitelisted(tabId, frameId))
     return false;
 
   var documentUrl = getFrameUrl(tabId, frameId);
   if (!documentUrl)
     return false;
 
   var requestHost = extractHostFromURL(url);
   var documentHost = extractHostFromURL(documentUrl);
   var thirdParty = isThirdParty(requestHost, documentHost);
-  var filter = defaultMatcher.matchesAny(url, type, documentHost, thirdParty);
-
-  if (filter instanceof BlockingFilter)
-  {
-    var collapse = filter.collapse;
-    if (collapse == null)
-      collapse = (localStorage["hidePlaceholders"] != "false");
-    if (collapse && (type == "SUBDOCUMENT" || type == "IMAGE"))
-    {
-      chrome.tabs.sendMessage(tabId, {
-        reqtype: "hide-element",
-        type: type,
-        url: url,
-        documentUrl: documentUrl
-      });
-    }
-  }
-
-  return filter;
+  return defaultMatcher.matchesAny(url, type, documentHost, thirdParty);
 }
 
 function isFrameWhitelisted(tabId, frameId, type)
 {
   var parent = frameId;
   while (parent != -1)
   {
     var parentData = getFrameData(tabId, parent);
     if (!parentData)
       break;
 
     if (isWhitelisted(parentData.url, type) || "keyException" in parentData)
       return true;
     parent = parentData.parent;
   }
   return false;
 }