Issue 3532 - Generate animation images at runtime

safari/ext/background.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 157 matching lines @@
 
   /* Pages */
 
   var pages = Object.create(null);
   var pageCounter = 0;
 
   var Page = function(id, tab, url)
   {
     this._id = id;
     this._tab = tab;
-    this._frames = [{url: new URL(url || "about:blank"), parent: null}];
+    this._frames = [{url: new URL(url), parent: null}];
 
     if (tab.page)
       this._messageProxy = new ext._MessageProxy(tab.page);
     else
       // while the new tab page is shown on Safari 7, the 'page' property
       // of the tab is undefined, and we can't send messages to that page
       this._messageProxy = {
         handleRequest: function() {},
         handleResponse: function() {},
         sendMessage: function() {}
@@ skipping 553 matching lines @@
         tab.activate();
         if (callback)
           callback(page);
         return;
       }
     }
 
     ext.pages.open(optionsUrl, callback);
   };
 })();