Issue 2021 - Fixed deletion of migrated files from the FileSystem API

chrome/ext/background.js

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-2015 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 571 matching lines @@
                   {
                     chrome.storage.local.set(
                       {
                         "file:patterns.ini": {
                           content: reader.result.split(/[\r\n]+/),
                           lastModified: metadata.modificationTime.getTime()
                         }
                       },
                       function()
                       {
-                        fs.root.removeRecursively(callback, callback);
+                        fs.root.createReader().readEntries(function(entries)
+                        {
+                          var emptyFunc = function() {};
+
+                          for (var i = 0; i < entries.length; i++)
+                          {
+                            var entry = entries[i];
+                            if (entry.isDirectory)
+                              entry.removeRecursively(emptyFunc, emptyFunc);
+                            else
+                              entry.remove(emptyFunc, emptyFunc);
+                          }
+                        });
+
+                        callback();
                       }
                     );
                   }
                   else
                   {
                     callback();
                   }
                 };
                 reader.readAsText(file);
               }, callback);
@@ skipping 36 matching lines @@
             callback(new Page(tab));
         }
         else
         {
           ext.pages.open(optionsUrl, callback);
         }
       });
     });
   };
 })();