Merging upstream version 125.0.1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

35 files changed, 69 insertions, 73 deletions

diff --git a/testing/talos/talos/allowlist.py b/testing/talos/talos/allowlist.py
index 195d85b6e1..7ec737d927 100644
--- a/testing/talos/talos/allowlist.py
+++ b/testing/talos/talos/allowlist.py
@@ -85,7 +85,7 @@ class Allowlist:
                 if len(parts) >= 2:
                     filename = "%s%s" % (parts[0], new_name)
 
-        return filename.strip("/\\\ \t")
+        return filename.strip("/\\\\ \t")
 
     def check(self, test, file_name_index, event_source_index=None):
         errors = {}
diff --git a/testing/talos/talos/bootstrap.js b/testing/talos/talos/bootstrap.js
index 7acad7ea90..22749a28fb 100644
--- a/testing/talos/talos/bootstrap.js
+++ b/testing/talos/talos/bootstrap.js
@@ -27,7 +27,7 @@ const windowTracker = {
     Services.ww.registerNotification(this);
   },
 
-  async observe(window, topic, data) {
+  async observe(window, topic) {
     if (topic === "domwindowopened") {
       await new Promise(resolve =>
         window.addEventListener("DOMWindowCreated", resolve, { once: true })
@@ -50,13 +50,13 @@ function readSync(uri) {
   return new TextDecoder().decode(buffer);
 }
 
-function startup(data, reason) {
+function startup(data) {
   Services.scriptloader.loadSubScript(
     data.resourceURI.resolve("content/initialize_browser.js")
   );
   windowTracker.init();
 }
 
-function shutdown(data, reason) {}
-function install(data, reason) {}
-function uninstall(data, reason) {}
+function shutdown() {}
+function install() {}
+function uninstall() {}
diff --git a/testing/talos/talos/pageloader/chrome/a11y.js b/testing/talos/talos/pageloader/chrome/a11y.js
index 3541076ee7..981a1700ac 100644
--- a/testing/talos/talos/pageloader/chrome/a11y.js
+++ b/testing/talos/talos/pageloader/chrome/a11y.js
@@ -55,7 +55,7 @@
     ensureAccessibleTreeForNode(node);
   }
 
-  addEventListener("DOMContentLoaded", e => {
+  addEventListener("DOMContentLoaded", () => {
     Cu.exportFunction(initAccessibility, content, {
       defineAs: "initAccessibility",
     });
diff --git a/testing/talos/talos/pageloader/chrome/lh_hero.js b/testing/talos/talos/pageloader/chrome/lh_hero.js
index 6705b6d53c..55f28e2333 100644
--- a/testing/talos/talos/pageloader/chrome/lh_hero.js
+++ b/testing/talos/talos/pageloader/chrome/lh_hero.js
@@ -8,8 +8,8 @@ function _contentHeroHandler(isload) {
   var obs = null;
   var el = content.window.document.querySelector("[elementtiming]");
   if (el) {
-    function callback(entries, observer) {
-      entries.forEach(entry => {
+    function callback(entries) {
+      entries.forEach(() => {
         sendAsyncMessage("PageLoader:LoadEvent", {
           time: content.window.performance.now(),
           name: "tphero",
diff --git a/testing/talos/talos/pageloader/chrome/lh_moz.js b/testing/talos/talos/pageloader/chrome/lh_moz.js
index 46d4a74a7c..8879d172e2 100644
--- a/testing/talos/talos/pageloader/chrome/lh_moz.js
+++ b/testing/talos/talos/pageloader/chrome/lh_moz.js
@@ -9,7 +9,7 @@ function _contentPaintHandler() {
   if (utils.isMozAfterPaintPending) {
     addEventListener(
       "MozAfterPaint",
-      function afterpaint(e) {
+      function afterpaint() {
         removeEventListener("MozAfterPaint", afterpaint, true);
         sendAsyncMessage("PageLoader:LoadEvent", {});
       },
diff --git a/testing/talos/talos/pageloader/chrome/pageloader.js b/testing/talos/talos/pageloader/chrome/pageloader.js
index 839901fb8e..6b1f89f71d 100644
--- a/testing/talos/talos/pageloader/chrome/pageloader.js
+++ b/testing/talos/talos/pageloader/chrome/pageloader.js
@@ -241,7 +241,7 @@ async function plInit() {
     // pages should be able to load in the same mode as the initial page - due
     // to this reinitialization on the switch.
     let tab = gBrowser.selectedTab;
-    tab.addEventListener("TabRemotenessChange", function (evt) {
+    tab.addEventListener("TabRemotenessChange", function () {
       loadFrameScripts(tab.linkedBrowser);
     });
     loadFrameScripts(tab.linkedBrowser);
@@ -300,7 +300,7 @@ function plLoadPage() {
   }
 
   let tab = gBrowser.selectedTab;
-  tab.addEventListener("TabRemotenessChange", evt => {
+  tab.addEventListener("TabRemotenessChange", () => {
     addMsgListeners(tab.linkedBrowser);
   });
   addMsgListeners(tab.linkedBrowser);
@@ -581,13 +581,10 @@ function waitForPDFPaint() {
 function forceContentGC() {
   return new Promise(resolve => {
     let mm = browserWindow.gBrowser.selectedBrowser.messageManager;
-    mm.addMessageListener(
-      "Talos:ForceGC:OK",
-      function onTalosContentForceGC(msg) {
-        mm.removeMessageListener("Talos:ForceGC:OK", onTalosContentForceGC);
-        resolve();
-      }
-    );
+    mm.addMessageListener("Talos:ForceGC:OK", function onTalosContentForceGC() {
+      mm.removeMessageListener("Talos:ForceGC:OK", onTalosContentForceGC);
+      resolve();
+    });
     mm.sendAsyncMessage("Talos:ForceGC");
   });
 }
diff --git a/testing/talos/talos/pageloader/chrome/tscroll.js b/testing/talos/talos/pageloader/chrome/tscroll.js
index 7f64b8c474..e354a474fb 100644
--- a/testing/talos/talos/pageloader/chrome/tscroll.js
+++ b/testing/talos/talos/pageloader/chrome/tscroll.js
@@ -267,7 +267,7 @@ function testScroll(target, stepSize, opt_reportFunc, opt_numSteps) {
       TalosPowersParent.exec("stopFrameTimeRecording", handle, cb, win);
     }
 
-    return new Promise(function (resolve, reject) {
+    return new Promise(function (resolve) {
       setSmooth();
 
       var handle = -1;
diff --git a/testing/talos/talos/results.py b/testing/talos/talos/results.py
index 801c18a0cc..fe4ab60e52 100755
--- a/testing/talos/talos/results.py
+++ b/testing/talos/talos/results.py
@@ -311,7 +311,7 @@ class BrowserLogResults(object):
 
     # regular expression for responsiveness results
     RESULTS_RESPONSIVENESS_REGEX = re.compile(
-        "MOZ_EVENT_TRACE\ssample\s\d*?\s(\d*\.?\d*)$", re.DOTALL | re.MULTILINE
+        r"MOZ_EVENT_TRACE\ssample\s\d*?\s(\d*\.?\d*)$", re.DOTALL | re.MULTILINE
     )
 
     # classes for results types
diff --git a/testing/talos/talos/run_tests.py b/testing/talos/talos/run_tests.py
index 8213c92897..1d3333e3a8 100755
--- a/testing/talos/talos/run_tests.py
+++ b/testing/talos/talos/run_tests.py
@@ -54,7 +54,9 @@ def set_tp_preferences(test, browser_config):
             "of cycles, please disregard reported numbers"
         )
         for cycle_var in ["tppagecycles", "tpcycles", "cycles"]:
-            if test[cycle_var] > 2:
+            if test["name"] == "tp5o_scroll" and test[cycle_var] > 1:
+                test[cycle_var] = 1
+            elif test[cycle_var] > 2:
                 test[cycle_var] = 2
 
     CLI_bool_options = [
diff --git a/testing/talos/talos/startup_test/sessionrestore/addon/api.js b/testing/talos/talos/startup_test/sessionrestore/addon/api.js
index f621894623..87f0d46aee 100644
--- a/testing/talos/talos/startup_test/sessionrestore/addon/api.js
+++ b/testing/talos/talos/startup_test/sessionrestore/addon/api.js
@@ -28,7 +28,7 @@ this.sessionrestore = class extends ExtensionAPI {
     this.run();
   }
 
-  observe(subject, topic, data) {
+  observe(subject, topic) {
     if (topic == "browser-idle-startup-tasks-finished") {
       this.promiseIdleFinished.resolve();
     }
diff --git a/testing/talos/talos/startup_test/startup_about_home_paint/addon/api.js b/testing/talos/talos/startup_test/startup_about_home_paint/addon/api.js
index 14887aa112..9367dec45e 100644
--- a/testing/talos/talos/startup_test/startup_about_home_paint/addon/api.js
+++ b/testing/talos/talos/startup_test/startup_about_home_paint/addon/api.js
@@ -27,7 +27,7 @@ this.startup_about_home_paint = class extends ExtensionAPI {
     });
   }
 
-  observe(subject, topic, data) {
+  observe(subject, topic) {
     if (topic == "browser-idle-startup-tasks-finished") {
       this.checkForTelemetry();
     }
diff --git a/testing/talos/talos/talos-powers/api.js b/testing/talos/talos/talos-powers/api.js
index cb0ddaccef..c6b7611976 100644
--- a/testing/talos/talos/talos-powers/api.js
+++ b/testing/talos/talos/talos-powers/api.js
@@ -371,7 +371,7 @@ TalosPowersService.prototype = {
     },
   */
   ParentExecServices: {
-    ping(arg, callback, win) {
+    ping(arg, callback) {
       callback();
     },
 
@@ -387,15 +387,15 @@ TalosPowersService.prototype = {
       callback(rv);
     },
 
-    requestDumpCoverageCounters(arg, callback, win) {
+    requestDumpCoverageCounters(arg, callback) {
       PerTestCoverageUtils.afterTest().then(callback);
     },
 
-    requestResetCoverageCounters(arg, callback, win) {
+    requestResetCoverageCounters(arg, callback) {
       PerTestCoverageUtils.beforeTest().then(callback);
     },
 
-    dumpAboutSupport(arg, callback, win) {
+    dumpAboutSupport(arg, callback) {
       const { Troubleshoot } = ChromeUtils.importESModule(
         "resource://gre/modules/Troubleshoot.sys.mjs"
       );
diff --git a/testing/talos/talos/talos-powers/chrome/talos-powers-content.js b/testing/talos/talos/talos-powers/chrome/talos-powers-content.js
index 4b7276e7a5..79e1742d1a 100644
--- a/testing/talos/talos/talos-powers/chrome/talos-powers-content.js
+++ b/testing/talos/talos/talos-powers/chrome/talos-powers-content.js
@@ -35,7 +35,7 @@ addMessageListener("TalosContentProfiler:Response", msg => {
 
 addEventListener(
   "TalosPowersContentForceCCAndGC",
-  e => {
+  () => {
     Cu.forceGC();
     Cu.forceCC();
     Cu.forceShrinkingGC();
@@ -46,7 +46,7 @@ addEventListener(
 
 addEventListener(
   "TalosPowersContentFocus",
-  e => {
+  () => {
     if (
       content.location.protocol != "file:" &&
       content.location.hostname != "localhost" &&
@@ -72,7 +72,7 @@ addEventListener(
 
 addEventListener(
   "TalosPowersContentGetStartupInfo",
-  e => {
+  () => {
     sendAsyncMessage("TalosPowersContent:GetStartupInfo");
     addMessageListener(
       "TalosPowersContent:GetStartupInfo:Result",
@@ -103,7 +103,7 @@ addEventListener(
 
 addEventListener(
   "TalosPowersContentDumpConsole",
-  e => {
+  () => {
     var messages;
     try {
       messages = Services.console.getMessageArray();
@@ -147,7 +147,7 @@ addEventListener(
  */
 addEventListener(
   "TalosPowersWebRenderCapture",
-  e => {
+  () => {
     if (content && content.windowUtils) {
       content.windowUtils.wrCapture();
     } else {
diff --git a/testing/talos/talos/tests/cpstartup/extension/api.js b/testing/talos/talos/tests/cpstartup/extension/api.js
index 8b5e7438ce..7a881ef66f 100644
--- a/testing/talos/talos/tests/cpstartup/extension/api.js
+++ b/testing/talos/talos/tests/cpstartup/extension/api.js
@@ -116,7 +116,7 @@ this.cpstartup = class extends ExtensionAPI {
   removeTab(tab) {
     return new Promise(resolve => {
       let browser = tab.linkedBrowser;
-      let observer = (subject, topic, data) => {
+      let observer = subject => {
         if (subject === browser) {
           Services.obs.removeObserver(observer, BROWSER_FLUSH_TOPIC);
           resolve();
diff --git a/testing/talos/talos/tests/cpstartup/extension/framescript.js b/testing/talos/talos/tests/cpstartup/extension/framescript.js
index 972f938881..ad09e24cb1 100644
--- a/testing/talos/talos/tests/cpstartup/extension/framescript.js
+++ b/testing/talos/talos/tests/cpstartup/extension/framescript.js
@@ -7,7 +7,7 @@
 
   addEventListener(
     "CPStartup:Ping",
-    e => {
+    () => {
       let evt = new content.CustomEvent("CPStartup:Pong", { bubbles: true });
       content.dispatchEvent(evt);
     },
diff --git a/testing/talos/talos/tests/devtools/addon/content/actors/DampLoadChild.sys.mjs b/testing/talos/talos/tests/devtools/addon/content/actors/DampLoadChild.sys.mjs
index 1f7db91c4b..5ef462c7f8 100644
--- a/testing/talos/talos/tests/devtools/addon/content/actors/DampLoadChild.sys.mjs
+++ b/testing/talos/talos/tests/devtools/addon/content/actors/DampLoadChild.sys.mjs
@@ -5,7 +5,7 @@
 /* eslint-disable no-restricted-globals */
 
 export class DampLoadChild extends JSWindowActorChild {
-  handleEvent(evt) {
+  handleEvent() {
     this.sendAsyncMessage("DampLoadChild:PageShow", {
       browsingContext: this.browsingContext,
     });
diff --git a/testing/talos/talos/tests/devtools/addon/content/damp-tests.js b/testing/talos/talos/tests/devtools/addon/content/damp-tests.js
index 4a7a6fe78d..d55af15efd 100644
--- a/testing/talos/talos/tests/devtools/addon/content/damp-tests.js
+++ b/testing/talos/talos/tests/devtools/addon/content/damp-tests.js
@@ -5,6 +5,7 @@
 "use strict";
 
 const isWindows = Services.appinfo.OS === "WINNT";
+const isMacOS = Services.appinfo.OS === "Darwin";
 
 // DAMP is split in sub-suites to run the tests faster on continuous integration.
 // See the initial patches in Bug 1749928 if we need to add more suites.
@@ -232,6 +233,8 @@ module.exports = {
     {
       name: "browser-toolbox",
       path: "toolbox/browser-toolbox.js",
+      // Bug 1881503 - disabled toolbox/browser-toolbox on windows and mac for causing permafails
+      disabled: isWindows || isMacOS,
     },
     {
       name: "server.protocoljs",
diff --git a/testing/talos/talos/tests/devtools/addon/content/damp.js b/testing/talos/talos/tests/devtools/addon/content/damp.js
index 9f710763d1..cad8c8433d 100644
--- a/testing/talos/talos/tests/devtools/addon/content/damp.js
+++ b/testing/talos/talos/tests/devtools/addon/content/damp.js
@@ -216,7 +216,7 @@ Damp.prototype = {
     return tab;
   },
 
-  async testTeardown(url) {
+  async testTeardown() {
     // Disable closing animation to avoid intermittents and prevent having to wait for
     // animation's end. (See bug 1480953)
     this._win.gBrowser.removeCurrentTab({ animate: false });
diff --git a/testing/talos/talos/tests/devtools/addon/content/tests/debugger/custom.js b/testing/talos/talos/tests/devtools/addon/content/tests/debugger/custom.js
index d0815bd514..3f2f8bc6e2 100644
--- a/testing/talos/talos/tests/devtools/addon/content/tests/debugger/custom.js
+++ b/testing/talos/talos/tests/devtools/addon/content/tests/debugger/custom.js
@@ -145,7 +145,7 @@ async function stepDebuggerAndLog(dbg, tab, testFunction) {
   }
 }
 
-async function testProjectSearch(dbg, tab) {
+async function testProjectSearch(dbg) {
   dump("Executing project search\n");
   const test = runTest(`custom.jsdebugger.project-search.DAMP`);
   const firstSearchResultTest = runTest(
@@ -216,7 +216,7 @@ async function testPreview(dbg, tab, testFunction) {
   await garbageCollect();
 }
 
-async function testOpeningLargeMinifiedFile(dbg, tab) {
+async function testOpeningLargeMinifiedFile(dbg) {
   const fileFirstMinifiedChars = `(()=>{var e,t,n,r,o={82603`;
 
   dump("Open minified.js (large minified file)\n");
diff --git a/testing/talos/talos/tests/devtools/addon/content/tests/debugger/debugger-helpers.js b/testing/talos/talos/tests/devtools/addon/content/tests/debugger/debugger-helpers.js
index ee1e52ed00..53ad52e65e 100644
--- a/testing/talos/talos/tests/devtools/addon/content/tests/debugger/debugger-helpers.js
+++ b/testing/talos/talos/tests/devtools/addon/content/tests/debugger/debugger-helpers.js
@@ -352,13 +352,7 @@ async function removeBreakpoints(dbg) {
 }
 exports.removeBreakpoints = removeBreakpoints;
 
-async function pauseDebugger(
-  dbg,
-  tab,
-  testFunction,
-  { line, file },
-  pauseOptions
-) {
+async function pauseDebugger(dbg, tab, testFunction, { line, file }) {
   const { getSelectedLocation, isMapScopesEnabled } = dbg.selectors;
 
   const state = dbg.store.getState();
diff --git a/testing/talos/talos/tests/devtools/addon/content/tests/head.js b/testing/talos/talos/tests/devtools/addon/content/tests/head.js
index 559ca21d2d..910cbe1e30 100644
--- a/testing/talos/talos/tests/devtools/addon/content/tests/head.js
+++ b/testing/talos/talos/tests/devtools/addon/content/tests/head.js
@@ -114,7 +114,7 @@ function waitForDOMPredicate(
     return Promise.resolve(rv);
   }
   return new Promise(resolve => {
-    const observer = new target.ownerGlobal.MutationObserver(mutations => {
+    const observer = new target.ownerGlobal.MutationObserver(() => {
       rv = predicate();
       if (rv) {
         resolve(rv);
diff --git a/testing/talos/talos/tests/devtools/addon/content/tests/netmonitor/netmonitor-helpers.js b/testing/talos/talos/tests/devtools/addon/content/tests/netmonitor/netmonitor-helpers.js
index 4b860bfd1b..f981c399f6 100644
--- a/testing/talos/talos/tests/devtools/addon/content/tests/netmonitor/netmonitor-helpers.js
+++ b/testing/talos/talos/tests/devtools/addon/content/tests/netmonitor/netmonitor-helpers.js
@@ -45,7 +45,7 @@ async function waitForAllRequestsFinished(
     let payloadReady = 0;
     let resolveWithLessThanMaxRequestsTimer = null;
 
-    function onPayloadReady(_, id) {
+    function onPayloadReady() {
       payloadReady++;
       dump(`Waiting for ${maxExpectedRequests - payloadReady} requests\n`);
       maybeResolve();
diff --git a/testing/talos/talos/tests/devtools/addon/content/tests/server/actor.js b/testing/talos/talos/tests/devtools/addon/content/tests/server/actor.js
index 7180365c40..e27059d420 100644
--- a/testing/talos/talos/tests/devtools/addon/content/tests/server/actor.js
+++ b/testing/talos/talos/tests/devtools/addon/content/tests/server/actor.js
@@ -12,7 +12,7 @@ class DampTestActor extends Actor {
     super(conn, dampTestSpec);
   }
 
-  testMethod(arg, { option }, arraySize) {
+  testMethod(arg, { option }) {
     // Emit an event with second argument's option.
     this.emit("testEvent", option);
 
diff --git a/testing/talos/talos/tests/devtools/addon/content/tests/server/protocol.js b/testing/talos/talos/tests/devtools/addon/content/tests/server/protocol.js
index 7cbd58d9dd..8aae57618a 100644
--- a/testing/talos/talos/tests/devtools/addon/content/tests/server/protocol.js
+++ b/testing/talos/talos/tests/devtools/addon/content/tests/server/protocol.js
@@ -67,7 +67,7 @@ module.exports = async function () {
     bigObject["attribute-" + i] = bigString;
   }
 
-  let bigArray = Array.from({ length: ARRAY_SIZE }, (_, i) => bigObject);
+  let bigArray = Array.from({ length: ARRAY_SIZE }, _ => bigObject);
 
   // Open against options to avoid noise from tools
   let toolbox = await openToolbox("options");
diff --git a/testing/talos/talos/tests/devtools/addon/content/tests/toolbox/panels-in-background.js b/testing/talos/talos/tests/devtools/addon/content/tests/toolbox/panels-in-background.js
index 852e65467b..7f27560a85 100644
--- a/testing/talos/talos/tests/devtools/addon/content/tests/toolbox/panels-in-background.js
+++ b/testing/talos/talos/tests/devtools/addon/content/tests/toolbox/panels-in-background.js
@@ -40,7 +40,7 @@ function waitForPayload(count, panelWin) {
   return new Promise(resolve => {
     let payloadReady = 0;
 
-    function onPayloadReady(_, id) {
+    function onPayloadReady() {
       payloadReady++;
       maybeResolve();
     }
diff --git a/testing/talos/talos/tests/tabpaint/api.js b/testing/talos/talos/tests/tabpaint/api.js
index abf64c6fe4..990267bdc2 100644
--- a/testing/talos/talos/tests/tabpaint/api.js
+++ b/testing/talos/talos/tests/tabpaint/api.js
@@ -160,7 +160,7 @@ this.tabpaint = class extends ExtensionAPI {
    *         Resolves once the tab has been fully removed. Resolves
    *         with the time (in ms) it took to open the tab from content.
    */
-  async openTabFromContent(gBrowser) {
+  async openTabFromContent() {
     TalosParentProfiler.subtestStart("TabPaint Content Start");
     let start_time = Cu.now();
 
@@ -200,7 +200,7 @@ this.tabpaint = class extends ExtensionAPI {
     TalosParentProfiler.mark("Tabpaint: Remove Tab");
     return new Promise(resolve => {
       let browser = tab.linkedBrowser;
-      let observer = (subject, topic, data) => {
+      let observer = subject => {
         if (subject === browser) {
           Services.obs.removeObserver(observer, BROWSER_FLUSH_TOPIC);
           resolve();
diff --git a/testing/talos/talos/tests/tabpaint/framescript.js b/testing/talos/talos/tests/tabpaint/framescript.js
index 2d4d7149fc..3e209205b8 100644
--- a/testing/talos/talos/tests/tabpaint/framescript.js
+++ b/testing/talos/talos/tests/tabpaint/framescript.js
@@ -3,7 +3,7 @@
 (function () {
   addEventListener(
     "load",
-    loadevt => {
+    () => {
       if (!content.location.pathname.endsWith("target.html")) {
         return;
       }
@@ -62,7 +62,7 @@
 
   addEventListener(
     "TabPaint:Ping",
-    e => {
+    () => {
       let evt = new content.CustomEvent("TabPaint:Pong", { bubbles: true });
       content.dispatchEvent(evt);
     },
@@ -79,7 +79,7 @@
     true
   );
 
-  addMessageListener("TabPaint:OpenFromContent", msg => {
+  addMessageListener("TabPaint:OpenFromContent", () => {
     let evt = new content.CustomEvent("TabPaint:OpenFromContent", {
       bubbles: true,
     });
diff --git a/testing/talos/talos/tests/tabpaint/tabpaint.html b/testing/talos/talos/tests/tabpaint/tabpaint.html
index 0ab7242304..b0329b5a9f 100644
--- a/testing/talos/talos/tests/tabpaint/tabpaint.html
+++ b/testing/talos/talos/tests/tabpaint/tabpaint.html
@@ -13,7 +13,7 @@ function init() {
     tpRecordTime([fromParent, fromContent].join(","), 0, "tabpaint-from-parent, tabpaint-from-content");
   }, {once: true});
 
-  window.addEventListener("TabPaint:OpenFromContent", (event) => {
+  window.addEventListener("TabPaint:OpenFromContent", () => {
     let target = document.getElementById("target");
 
     //win.performance.now() + win.performance.timing.navigationStart gives the UNIX timestamp.
diff --git a/testing/talos/talos/tests/tabswitch/actors/TalosTabSwitchChild.sys.mjs b/testing/talos/talos/tests/tabswitch/actors/TalosTabSwitchChild.sys.mjs
index 5b27d677e3..bf456012f3 100644
--- a/testing/talos/talos/tests/tabswitch/actors/TalosTabSwitchChild.sys.mjs
+++ b/testing/talos/talos/tests/tabswitch/actors/TalosTabSwitchChild.sys.mjs
@@ -21,7 +21,7 @@ export class TalosTabSwitchChild extends RemotePageChild {
     super.actorCreated();
   }
 
-  handleEvent(event) {}
+  handleEvent() {}
 
   receiveMessage(message) {
     if (message.name == "GarbageCollect") {
diff --git a/testing/talos/talos/tests/tabswitch/content/tabswitch-content-process.js b/testing/talos/talos/tests/tabswitch/content/tabswitch-content-process.js
index 53c4935953..b0cc7f47e3 100644
--- a/testing/talos/talos/tests/tabswitch/content/tabswitch-content-process.js
+++ b/testing/talos/talos/tests/tabswitch/content/tabswitch-content-process.js
@@ -27,7 +27,7 @@ const TPSProcessScript = {
         chan.originalURI = aURI;
         return chan;
       }
-      getURIFlags(aURI) {
+      getURIFlags() {
         return (
           Ci.nsIAboutModule.ALLOW_SCRIPT |
           Ci.nsIAboutModule.URI_MUST_LOAD_IN_CHILD |
diff --git a/testing/talos/talos/tests/video/video_playback.html b/testing/talos/talos/tests/video/video_playback.html
index 99bec7c6c1..53922ba4d7 100644
--- a/testing/talos/talos/tests/video/video_playback.html
+++ b/testing/talos/talos/tests/video/video_playback.html
@@ -39,7 +39,7 @@ function content_focused() {
   runTest();
 }
 
-function fullscreen(event) {
+function fullscreen() {
   if ((document.fullscreenElement && document.fullscreenElement !== null) ||
       document.mozFullScreen) {
     startTest();
diff --git a/testing/talos/talos/tests/webgl/benchmarks/terrain/perftest.html b/testing/talos/talos/tests/webgl/benchmarks/terrain/perftest.html
index a472162552..fc78c1d75c 100644
--- a/testing/talos/talos/tests/webgl/benchmarks/terrain/perftest.html
+++ b/testing/talos/talos/tests/webgl/benchmarks/terrain/perftest.html
@@ -188,7 +188,7 @@
   const WARMUP_TIMESTAMPS = 30; // Must be at least 2
   const MEASURED_FRAMES   = 100;
 
-  var gDoneCallback = function placeholder(intervals) {};
+  var gDoneCallback = function placeholder() {};
   var gCurrentTimestamp = 0;
   var gResultTimestamps = [];
 
@@ -202,7 +202,7 @@
     });
   }
 
-  function draw(timestamp) {
+  function draw() {
     // It's possible that under some implementations (even if not our current one),
     // the rAF callback arg will be in some way "optimized", e.g. always point to the
     // estimated next vsync timestamp, in order to allow the callee to have less
diff --git a/testing/talos/talos/webextensions/dummy/background.js b/testing/talos/talos/webextensions/dummy/background.js
index 1b20f85cfa..d04a71d616 100644
--- a/testing/talos/talos/webextensions/dummy/background.js
+++ b/testing/talos/talos/webextensions/dummy/background.js
@@ -19,7 +19,7 @@ browser.webRequest.onBeforeRequest.addListener(
 
     let filter = browser.webRequest.filterResponseData(details.requestId);
 
-    filter.onstop = event => {
+    filter.onstop = () => {
       filter.close();
     };
     filter.ondata = event => {
@@ -48,7 +48,7 @@ browser.webRequest.onHeadersReceived.addListener(
   ["blocking", "responseHeaders"]
 );
 
-browser.webRequest.onErrorOccurred.addListener(details => {}, {
+browser.webRequest.onErrorOccurred.addListener(() => {}, {
   urls: ["https://*/*", "http://*/*"],
 });
 
@@ -73,7 +73,7 @@ browser.tabs.onUpdated.addListener((tabId, changed, tab) => {
   });
 });
 
-browser.tabs.onActivated.addListener(({ tabId, windowId }) => {
+browser.tabs.onActivated.addListener(({ tabId }) => {
   browser.pageAction.show(tabId);
 });
 
@@ -81,8 +81,8 @@ browser.tabs.onCreated.addListener(tab => {
   browser.pageAction.show(tab.id);
 });
 
-browser.tabs.onRemoved.addListener((tabId, removeInfo) => {});
+browser.tabs.onRemoved.addListener(() => {});
 
-browser.tabs.onAttached.addListener((tabId, attachInfo) => {});
+browser.tabs.onAttached.addListener(() => {});
 
-browser.tabs.onDetached.addListener((tabId, detachInfo) => {});
+browser.tabs.onDetached.addListener(() => {});
diff --git a/testing/talos/talos/xtalos/etlparser.py b/testing/talos/talos/xtalos/etlparser.py
index 5bbfa913f5..ddb14e0df8 100644
--- a/testing/talos/talos/xtalos/etlparser.py
+++ b/testing/talos/talos/xtalos/etlparser.py
@@ -221,7 +221,7 @@ def trackProcess(row, firstFirefoxPID):
     parentPID = int(row[PARENT_PID_INDEX])
     if parentPID == firstFirefoxPID:
         proc = row[PROCESS_INDEX]
-        gBrowserPID = int(re.search("^.* \(\s*(\d+)\)$", proc).group(1))
+        gBrowserPID = int(re.search(r"^.* \(\s*(\d+)\)$", proc).group(1))
 
 
 def getBrowserPID():
@@ -232,7 +232,7 @@ def getBrowserPID():
 def trackThread(row, browserPID):
     event, proc, tid = row[EVENTNAME_INDEX], row[PROCESS_INDEX], row[THREAD_ID_INDEX]
     if event in ["T-DCStart", "T-Start"]:
-        procName, procID = re.search("^(.*) \(\s*(\d+)\)$", proc).group(1, 2)
+        procName, procID = re.search(r"^(.*) \(\s*(\d+)\)$", proc).group(1, 2)
         if procID == str(browserPID):
             imgIdx = getIndex(event, IMAGEFUNC_COL)
             img = re.match("([^!]+)!", row[imgIdx]).group(1)
@@ -267,7 +267,7 @@ def trackThreadNetIO(row, io, stage):
         gConnectionIDs[connID] = tid
     origThread = gConnectionIDs[connID]
     if origThread in gThreads:
-        match = re.match("[\w-]+\/([\w-]+)?", event)
+        match = re.match(r"[\w-]+\/([\w-]+)?", event)
         if not match:
             raise xtalos.XTalosError(
                 "Could not find a regular expression match for event: {}".format(event)
diff --git a/testing/talos/talos/xtalos/xperf_analyzer.py b/testing/talos/talos/xtalos/xperf_analyzer.py
index 833dc9960a..e66fd5494b 100644
--- a/testing/talos/talos/xtalos/xperf_analyzer.py
+++ b/testing/talos/talos/xtalos/xperf_analyzer.py
@@ -671,7 +671,7 @@ class SessionStoreWindowRestored(ClassicEvent):
 class ProcessStart(XPerfEvent):
     cmd_line_index = None
     process_index = None
-    extractor = re.compile("^(.+) \(\s*(\d+)\)$")
+    extractor = re.compile(r"^(.+) \(\s*(\d+)\)$")
 
     def __init__(self, leafname):
         super(ProcessStart, self).__init__("P-Start")
@@ -746,7 +746,7 @@ class ThreadStart(XPerfEvent):
 
     process_index = None
     tid_index = None
-    pid_extractor = re.compile("^.+ \(\s*(\d+)\)$")
+    pid_extractor = re.compile(r"^.+ \(\s*(\d+)\)$")
 
     def __init__(self):
         super(ThreadStart, self).__init__("T-Start")