Disable history API on YouTube in order to block ads in subsequent videos

safari/include.youtube.js

 /*
  * This file is part of Adblock Plus <http://adblockplus.org/>,
  * Copyright (C) 2006-2013 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 70 matching lines @@
     if (response.enabled)
     {
       deferred.forEach(patchPlayer);
       onBeforeLoadYoutubeVideo = patchPlayer;
     }
     else
       document.removeEventListener("beforeload", onBeforeLoad);
   });
 
   document.addEventListener("beforeload", onBeforeLoad, true);
+
+  // if history.pushState is available, YouTube uses the history API
+  // when navigation from one video to another, and tells the flash player
+  // with JavaScript which video and which ads to show next, bypassing
+  // our flashvars rewrite code. So we disable history.pushState on YouTube.
+  var script = document.createElement("script");
+  script.type = "application/javascript";
+  script.textContent = "history.pushState = undefined;";
+  document.documentElement.appendChild(script);
 })();