Bug 518617 - Private Browsing tests should use executeStep() instead of step(). r=ehsan

--HG--
extra : rebase_source : c7aa921163e13d5f7ea42ff084574876816a06d0

browser/components/privatebrowsing/test/unit/do_test_removeDataFromDomain.js

@@ -197,7 +197,7 @@ function check_downloaded(aURIString, aIsDownloaded)
 
   let checker = aIsDownloaded ? do_check_true : do_check_false;
   try {
-    checker(stmt.step());
+    checker(stmt.executeStep());
   }
   finally {
     stmt.finalize();