abpcrawler: Collect unmatched filters

lib/storage.js

 Cu.import("resource://gre/modules/FileUtils.jsm");
 
 let outputStream;
 let converterOutputStream;
 
 function createTemporaryFile(name)
 {
   let file = FileUtils.getFile("TmpD", [name]);
   file.createUnique(Ci.nsIFile.NORMAL_FILE_TYPE, FileUtils.PERMS_FILE);
   return file;
 }
 
 function openOutputStream(file)
 {
   let outputStream = FileUtils.openSafeFileOutputStream(file);
   let converterOutputStream = Cc["@mozilla.org/intl/converter-output-stream;1"]
       .createInstance(Ci.nsIConverterOutputStream);
   converterOutputStream.init(outputStream, "UTF-8", 0, 0);
   return [outputStream, converterOutputStream];
 }
 
 let Storage = exports.Storage = {};
 
 Storage.init = function()
 {
-  Storage.dataFile = createTemporaryFile("crawler-data");
-  [outputStream, converterOutputStream] = openOutputStream(Storage.dataFile);
+  Storage.requestsFile = createTemporaryFile("crawler-requests");
+  [outputStream, converterOutputStream] =
+    openOutputStream(Storage.requestsFile);
 };
 
 Storage.write = function(data)
 {
   let line = JSON.stringify(data) + "\n";
   converterOutputStream.writeString(line);
 };
 
 Storage.finish = function()
 {
   converterOutputStream.flush();
   FileUtils.closeSafeFileOutputStream(outputStream);
 };
 
 Storage.destroy = function()
 {
-  Storage.dataFile.remove(true);
+  Storage.requestsFile.remove(true);
 };