1 files changed, 4 insertions, 4 deletions
diff --git a/dom/push/test/xpcshell/head.js b/dom/push/test/xpcshell/head.js
index da50ee3c5c..926d523201 100644
--- a/dom/push/test/xpcshell/head.js
+++ b/dom/push/test/xpcshell/head.js
@@ -46,7 +46,7 @@ var isParent =
   Services.appinfo.processType == Ci.nsIXULRuntime.PROCESS_TYPE_DEFAULT;
 
 // Stop and clean up after the PushService.
-Services.obs.addObserver(function observe(subject, topic, data) {
+Services.obs.addObserver(function observe(subject, topic) {
   Services.obs.removeObserver(observe, topic);
   PushService.uninit();
   // Occasionally, `profile-change-teardown` and `xpcom-shutdown` will fire
@@ -107,7 +107,7 @@ function waterfall(...callbacks) {
  * @returns {Promise} A promise that fulfills when the notification is fired.
  */
 function promiseObserverNotification(topic, matchFunc) {
-  return new Promise((resolve, reject) => {
+  return new Promise(resolve => {
     Services.obs.addObserver(function observe(subject, aTopic, data) {
       let matches = typeof matchFunc != "function" || matchFunc(subject, data);
       if (!matches) {
@@ -305,7 +305,7 @@ MockWebSocket.prototype = {
     this._handleMessage(msg);
   },
 
-  close(code, reason) {
+  close() {
     waterfall(() => this._listener.onStop(this._context, Cr.NS_OK));
   },
 
@@ -413,7 +413,7 @@ var setUpServiceInParent = async function (service, db) {
     }),
     makeWebSocket(uri) {
       return new MockWebSocket(uri, {
-        onHello(request) {
+        onHello() {
           this.serverSendMsg(
             JSON.stringify({
               messageType: "hello",