Bug 1099332 - Ensure there is no active search engines before test run. r=mak77

toolkit/components/places/tests/unifiedcomplete/head_autocomplete.js

@@ -296,3 +296,12 @@ function makeActionURI(action, params) {
   let url = "moz-action:" + action + "," + JSON.stringify(params);
   return NetUtil.newURI(url);
 }
+
+// Hide all the search engines so they don't influence tests results.
+add_task(function ensure_no_search_engines() {
+  let count = {};
+  let engines = Services.search.getEngines(count);
+  for (let i = 0; i < count.value; i++) {
+    engines[i].hidden = true;
+  }
+});