diff -r 000000000000 -r 6474c204b198 browser/modules/test/contentSearch.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/modules/test/contentSearch.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,21 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+const TEST_MSG = "ContentSearchTest";
+const SERVICE_EVENT_TYPE = "ContentSearchService";
+const CLIENT_EVENT_TYPE = "ContentSearchClient";
+
+// Forward events from the in-content service to the test.
+content.addEventListener(SERVICE_EVENT_TYPE, event => {
+  sendAsyncMessage(TEST_MSG, event.detail);
+});
+
+// Forward messages from the test to the in-content service.
+addMessageListener(TEST_MSG, msg => {
+  content.dispatchEvent(
+    new content.CustomEvent(CLIENT_EVENT_TYPE, {
+      detail: msg.data,
+    })
+  );
+});