Issue 6790 - Implement uabinject-defuser snippet

lib/content/snippets.js

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-present 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 54 matching lines @@
 }
 
 exports.log = log;
 
 function trace(...args)
 {
   log(...args);
 }
 
 exports.trace = makeInjector(trace, log);
+
+// This is an implementation of the uabinject-defuser technique used by uBlock
+// Origin
+// https://github.com/uBlockOrigin/uAssets/blob/c091f861b63cd2254b8e9e4628f6bdcd89d43caa/filters/resources.txt#L640
+function uabinjectDefuser()
+{
+  window.trckd = true;
+  window.uabpdl = true;
+  window.uabInject = true;
+  window.uabDetect = true;
+}
+
+exports["uabinject-defuser"] = makeInjector(uabinjectDefuser);