6 files changed, 15 insertions, 15 deletions

diff --git a/dom/midi/tests/MIDITestUtils.js b/dom/midi/tests/MIDITestUtils.js
index 779a961991..b6d6fa301c 100644
--- a/dom/midi/tests/MIDITestUtils.js
+++ b/dom/midi/tests/MIDITestUtils.js
@@ -1,7 +1,7 @@
 var MIDITestUtils = {
   permissionSetup: allow => {
     let permPromiseRes;
-    let permPromise = new Promise((res, rej) => {
+    let permPromise = new Promise(res => {
       permPromiseRes = res;
     });
     SpecialPowers.pushPrefEnv(
diff --git a/dom/midi/tests/browser_midi_permission_gated.js b/dom/midi/tests/browser_midi_permission_gated.js
index 2bdce51a2d..d82ea87d6e 100644
--- a/dom/midi/tests/browser_midi_permission_gated.js
+++ b/dom/midi/tests/browser_midi_permission_gated.js
@@ -779,7 +779,7 @@ async function waitForNotification(notificationId) {
   let observerPromise;
   if (notificationId !== "addon-webext-permissions") {
     observerPromise = new Promise(resolve => {
-      Services.obs.addObserver(function observer(aSubject, aTopic, aData) {
+      Services.obs.addObserver(function observer(aSubject, aTopic) {
         // Ignore the progress notification unless that is the notification we want
         if (
           notificationId != PROGRESS_NOTIFICATION &&
diff --git a/dom/midi/tests/browser_refresh_port_list.js b/dom/midi/tests/browser_refresh_port_list.js
index 152b067254..7e2adffe5f 100644
--- a/dom/midi/tests/browser_refresh_port_list.js
+++ b/dom/midi/tests/browser_refresh_port_list.js
@@ -4,37 +4,37 @@
 const EXAMPLE_ORG_URL = "https://example.org/browser/dom/midi/tests/";
 const PAGE = "refresh_port_list.html";
 
-async function get_access(browser) {
+async function get_access() {
   return SpecialPowers.spawn(gBrowser.selectedBrowser, [], function () {
     return content.wrappedJSObject.get_access();
   });
 }
 
-async function reset_access(browser) {
+async function reset_access() {
   return SpecialPowers.spawn(gBrowser.selectedBrowser, [], function () {
     return content.wrappedJSObject.reset_access();
   });
 }
 
-async function get_num_ports(browser) {
+async function get_num_ports() {
   return SpecialPowers.spawn(gBrowser.selectedBrowser, [], function () {
     return content.wrappedJSObject.get_num_ports();
   });
 }
 
-async function add_port(browser) {
+async function add_port() {
   return SpecialPowers.spawn(gBrowser.selectedBrowser, [], () => {
     return content.wrappedJSObject.add_port();
   });
 }
 
-async function remove_port(browser) {
+async function remove_port() {
   return SpecialPowers.spawn(gBrowser.selectedBrowser, [], () => {
     return content.wrappedJSObject.remove_port();
   });
 }
 
-async function force_refresh(browser) {
+async function force_refresh() {
   return SpecialPowers.spawn(gBrowser.selectedBrowser, [], () => {
     return content.wrappedJSObject.force_refresh();
   });
diff --git a/dom/midi/tests/test_midi_device_enumeration.html b/dom/midi/tests/test_midi_device_enumeration.html
index 1dab1c8cf7..48fe0c7d69 100644
--- a/dom/midi/tests/test_midi_device_enumeration.html
+++ b/dom/midi/tests/test_midi_device_enumeration.html
@@ -16,7 +16,7 @@
          is(await props[prop], obj[prop], type + " property value " + prop + " is " + props[prop]);
        }
      };
-     let failOnCall = (event) => {
+     let failOnCall = () => {
        ok(false, "No connect/state events should be received on startup!");
      };
      async function runTests () {
diff --git a/dom/midi/tests/test_midi_device_explicit_open_close.html b/dom/midi/tests/test_midi_device_explicit_open_close.html
index d3ed910a55..2fa682db5d 100644
--- a/dom/midi/tests/test_midi_device_explicit_open_close.html
+++ b/dom/midi/tests/test_midi_device_explicit_open_close.html
@@ -26,8 +26,8 @@
        let input = access.inputs.get(await MIDITestUtils.inputInfo.id);
        let portEventRes;
        let accessEventRes;
-       let portEventPromise = new Promise((resolve, reject) => { portEventRes = resolve; });
-       let accessEventPromise = new Promise((resolve, reject) => { accessEventRes = resolve; });
+       let portEventPromise = new Promise((resolve) => { portEventRes = resolve; });
+       let accessEventPromise = new Promise((resolve) => { accessEventRes = resolve; });
        let shouldClose = false;
        let checkPort = (event) => {
          ok(input === event.port, "input port object and event port object are same object");
@@ -77,8 +77,8 @@
          out_access.removeEventListener("statechange", outputEventHandler);
        }
        ok(true, "Starting MIDI port closing test");
-       portEventPromise = new Promise((resolve, reject) => { portEventRes = resolve; });
-       accessEventPromise = new Promise((resolve, reject) => { accessEventRes = resolve; });
+       portEventPromise = new Promise((resolve) => { portEventRes = resolve; });
+       accessEventPromise = new Promise((resolve) => { accessEventRes = resolve; });
        input.addEventListener("statechange", inputEventHandler);
        access.addEventListener("statechange", accessEventHandler);
        shouldClose = true;
diff --git a/dom/midi/tests/test_midi_device_pending.html b/dom/midi/tests/test_midi_device_pending.html
index 2e6bd08420..d81bbaf894 100644
--- a/dom/midi/tests/test_midi_device_pending.html
+++ b/dom/midi/tests/test_midi_device_pending.html
@@ -25,8 +25,8 @@
        let portPromise;
 
        function resetPromises() {
-         accessPromise = new Promise((res, rej) => { accessRes = res; });
-         portPromise = new Promise((res, rej) => { portRes = res; });
+         accessPromise = new Promise((res) => { accessRes = res; });
+         portPromise = new Promise((res) => { portRes = res; });
        }
 
        function accessStateChangeHandler(event) {