Issue 3687 - Add experimental support for Safari content blockers

popup.js

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-2016 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 45 matching lines @@
     {
       if (checkWhitelisted(page))
         document.body.classList.add("disabled");
 
       page.sendMessage({type: "composer.content.getState"}, function(response)
       {
         if (response && response.active)
           document.body.classList.add("clickhide-active");
       });
     }
+
+    // For Safari, if the content blocking API is active we need to hide the
+    // stats section. (The content blocking API doesn't provide a way for us to
+    // offer those blocking statistics.)
+    ext.backgroundPage.sendMessage({type: "safari.contentBlockingActive"},
+      function (contentBlockingActive)
+      {
+        if (contentBlockingActive)
+          document.body.classList.add("contentblocking-active");
+      }
+    );
   });
 
   document.getElementById("enabled").addEventListener("click", toggleEnabled, false);
   document.getElementById("clickhide").addEventListener("click", activateClickHide, false);
   document.getElementById("clickhide-cancel").addEventListener("click", cancelClickHide, false);
   document.getElementById("options").addEventListener("click", function()
   {
     ext.showOptions();
   }, false);
 
@@ skipping 58 matching lines @@
 }
 
 function toggleCollapse(event)
 {
   var collapser = event.currentTarget;
   Prefs[collapser.dataset.option] = !Prefs[collapser.dataset.option];
   collapser.parentNode.classList.toggle("collapsed");
 }
 
 document.addEventListener("DOMContentLoaded", onLoad, false);