Bug 1856104 - Remove useless version checks from JavaScript code. r=Gijs,webcompat-reviewers,settings-reviewers,search-reviewers,Standard8,twisniewski

Differential Revision: https://phabricator.services.mozilla.com/D189696

browser/base/content/browser.js

@@ -4671,12 +4671,8 @@ let gShareUtils = {
       return;
     }
 
-    // We only support "share URL" on macOS and on Windows 10:
+    // We only support "share URL" on macOS and on Windows:
-    if (
+    if (AppConstants.platform != "macosx" && AppConstants.platform != "win") {
-      AppConstants.platform != "macosx" &&
-      // Windows 10's internal NT version number was initially 6.4
-      !AppConstants.isPlatformAndVersionAtLeast("win", "6.4")
-    ) {
       return;
     }
 
@@ -6624,7 +6620,7 @@ var TabletModeUpdater = {
 var gTabletModePageCounter = {
   enabled: false,
   inc() {
-    this.enabled = AppConstants.isPlatformAndVersionAtLeast("win", "10.0");
+    this.enabled = AppConstants.platform == "win";
     if (!this.enabled) {
       this.inc = () => {};
       return;

browser/base/content/test/contextMenu/browser_contextmenu_share_win.js

@@ -41,12 +41,6 @@ add_task(async function test_contextmenu_share_win() {
       "hidden"
     );
     let itemCreated = contextMenu.querySelector(".share-tab-url-item");
-    if (!AppConstants.isPlatformAndVersionAtLeast("win", "6.4")) {
-      Assert.ok(!itemCreated, "We only expose share on windows 10 and above");
-      contextMenu.hidePopup();
-      await contextMenuClosedPromise;
-      return;
-    }
 
     ok(itemCreated, "Got Share item on Windows 10");
 

browser/base/content/test/contextMenu/browser_contextmenu_touch.js

@@ -34,9 +34,9 @@ async function openAndCheckContextMenu(contextMenu, target) {
   contextMenu.hidePopup();
 }
 
-// Ensure that we can run touch events properly for windows [10]
+// Ensure that we can run touch events properly for windows
 add_setup(async function () {
-  let isWindows = AppConstants.isPlatformAndVersionAtLeast("win", "10.0");
+  let isWindows = AppConstants.platform == "win";
   await SpecialPowers.pushPrefEnv({
     set: [["apz.test.fails_with_native_injection", isWindows]],
   });

browser/base/content/test/forms/browser_selectpopup_colors.js

@@ -793,7 +793,7 @@ add_task(async function test_scrollbar_props() {
   BrowserTestUtils.removeTab(tab);
 });
 
-if (AppConstants.isPlatformAndVersionAtLeast("win", "10")) {
+if (AppConstants.platform == "win") {
   add_task(async function test_darkmode() {
     let lightSelectColor = rgbaToString(
       InspectorUtils.colorToRGBA("MenuText", document)

browser/base/content/test/touch/browser_menu_touch.js

@@ -111,9 +111,9 @@ async function openAndCheckCustomizationUIMenu(target) {
   menu.hidePopup();
 }
 
-// Ensure that we can run touch events properly for windows [10]
+// Ensure that we can run touch events properly for windows
 add_setup(async function () {
-  let isWindows = AppConstants.isPlatformAndVersionAtLeast("win", "10.0");
+  let isWindows = AppConstants.platform == "win";
   await SpecialPowers.pushPrefEnv({
     set: [["apz.test.fails_with_native_injection", isWindows]],
   });

browser/components/customizableui/CustomizeMode.sys.mjs

@@ -1463,9 +1463,8 @@ CustomizeMode.prototype = {
       }
     }
 
-    // Add menu items for automatically switching to Touch mode in Windows Tablet Mode,
+    // Add menu items for automatically switching to Touch mode in Windows Tablet Mode.
-    // which is only available in Windows 10.
+    if (AppConstants.platform == "win") {
-    if (AppConstants.isPlatformAndVersionAtLeast("win", "10")) {
       let spacer = doc.getElementById("customization-uidensity-touch-spacer");
       let checkbox = doc.getElementById(
         "customization-uidensity-autotouchmode-checkbox"

browser/components/customizableui/test/browser_customizemode_uidensity.js

@@ -175,8 +175,8 @@ add_task(async function test_touch_mode_menuitem() {
   await testModeMenuitem("touch", window.gUIDensity.MODE_TOUCH);
 
   // Test the checkbox for automatic Touch Mode transition
-  // in Windows 10 Tablet Mode.
+  // in Windows Tablet Mode.
-  if (AppConstants.isPlatformAndVersionAtLeast("win", "10")) {
+  if (AppConstants.platform == "win") {
     await startCustomizing();
 
     let popupButton = document.getElementById("customization-uidensity-button");

browser/components/migration/MigrationUtils.sys.mjs

@@ -13,7 +13,6 @@ ChromeUtils.defineESModuleGetters(lazy, {
   PlacesUIUtils: "resource:///modules/PlacesUIUtils.sys.mjs",
   PlacesUtils: "resource://gre/modules/PlacesUtils.sys.mjs",
   Sqlite: "resource://gre/modules/Sqlite.sys.mjs",
-  WindowsRegistry: "resource://gre/modules/WindowsRegistry.sys.mjs",
   setTimeout: "resource://gre/modules/Timer.sys.mjs",
   MigrationWizardConstants:
     "chrome://browser/content/migration/migration-wizard-constants.mjs",
@@ -23,7 +22,6 @@ var gMigrators = null;
 var gFileMigrators = null;
 var gProfileStartup = null;
 var gL10n = null;
-var gPreviousDefaultBrowserKey = "";
 var gHasOpenedLegacyWizard = false;
 
 let gForceExitSpinResolve = false;
@@ -500,51 +498,6 @@ class MigrationUtils {
       console.error("Could not detect default browser: ", ex);
     }
 
-    // "firefox" is the least useful entry here, and might just be because we've set
-    // ourselves as the default (on Windows 7 and below). In that case, check if we
-    // have a registry key that tells us where to go:
-    if (
-      key == "firefox" &&
-      AppConstants.isPlatformAndVersionAtMost("win", "6.2")
-    ) {
-      // Because we remove the registry key, reading the registry key only works once.
-      // We save the value for subsequent calls to avoid hard-to-trace bugs when multiple
-      // consumers ask for this key.
-      if (gPreviousDefaultBrowserKey) {
-        key = gPreviousDefaultBrowserKey;
-      } else {
-        // We didn't have a saved value, so check the registry.
-        const kRegPath = "Software\\Mozilla\\Firefox";
-        let oldDefault = lazy.WindowsRegistry.readRegKey(
-          Ci.nsIWindowsRegKey.ROOT_KEY_CURRENT_USER,
-          kRegPath,
-          "OldDefaultBrowserCommand"
-        );
-        if (oldDefault) {
-          // Remove the key:
-          lazy.WindowsRegistry.removeRegKey(
-            Ci.nsIWindowsRegKey.ROOT_KEY_CURRENT_USER,
-            kRegPath,
-            "OldDefaultBrowserCommand"
-          );
-          try {
-            let file = Cc["@mozilla.org/file/local;1"].createInstance(
-              Ci.nsILocalFileWin
-            );
-            file.initWithCommandLine(oldDefault);
-            key =
-              APP_DESC_TO_KEY[file.getVersionInfoField("FileDescription")] ||
-              key;
-            // Save the value for future callers.
-            gPreviousDefaultBrowserKey = key;
-          } catch (ex) {
-            console.error(
-              "Could not convert old default browser value to description."
-            );
-          }
-        }
-      }
-    }
     return key;
   }
 

browser/components/newtab/aboutwelcome/lib/AboutWelcomeDefaults.jsm

@@ -690,13 +690,6 @@ async function prepareContentForReact(content) {
     return content;
   }
 
-  // Change content for Windows 7 because non-light themes aren't quite right.
-  if (AppConstants.isPlatformAndVersionAtMost("win", "6.1")) {
-    await lazy.AWScreenUtils.removeScreens(screens, screen =>
-      ["theme"].includes(screen.content?.tiles?.type)
-    );
-  }
-
   // Set the primary import button source based on attribution.
   if (content?.ua) {
     // If available, add the browser source to action data

browser/components/newtab/test/browser/browser_aboutwelcome_multistage_default.js

@@ -196,11 +196,6 @@ add_task(async function test_multistage_aboutwelcome_default() {
 
   await onButtonClick(browser, "button.primary");
 
-  // No 3rd screen to go to for win7.
-  if (win7Content) {
-    return;
-  }
-
   await test_screen_content(
     browser,
     "multistage step 3",
@@ -368,9 +363,6 @@ add_task(async function test_AWMultistage_Primary_Action() {
 });
 
 add_task(async function test_AWMultistage_Secondary_Open_URL_Action() {
-  if (win7Content) {
-    return;
-  }
   let browser = await openAboutWelcome();
   let aboutWelcomeActor = await getAboutWelcomeParent(browser);
   const sandbox = sinon.createSandbox();
@@ -437,11 +429,6 @@ add_task(async function test_AWMultistage_Secondary_Open_URL_Action() {
 });
 
 add_task(async function test_AWMultistage_Themes() {
-  // No theme screen to test for win7.
-  if (win7Content) {
-    return;
-  }
-
   let browser = await openAboutWelcome();
   let aboutWelcomeActor = await getAboutWelcomeParent(browser);
 
@@ -588,10 +575,6 @@ add_task(async function test_AWMultistage_can_restore_theme() {
 });
 
 add_task(async function test_AWMultistage_Import() {
-  // No import screen to test for win7.
-  if (win7Content) {
-    return;
-  }
   let browser = await openAboutWelcome();
   let aboutWelcomeActor = await getAboutWelcomeParent(browser);
 

browser/components/newtab/test/browser/browser_aboutwelcome_multistage_experimentAPI.js

@@ -257,52 +257,50 @@ add_task(async function test_multistage_aboutwelcome_experimentAPI() {
     sandbox.restore();
   });
 
-  // Test first (theme) screen for non-win7.
+  // Test first (theme) screen.
-  if (!win7Content) {
+  await test_screen_content(
-    await test_screen_content(
+    browser,
-      browser,
+    "multistage step 1",
-      "multistage step 1",
+    // Expected selectors:
-      // Expected selectors:
+    [
-      [
+      "div.onboardingContainer",
-        "div.onboardingContainer",
+      "main.AW_STEP1",
-        "main.AW_STEP1",
+      "div.secondary-cta",
-        "div.secondary-cta",
+      "div.secondary-cta.top",
-        "div.secondary-cta.top",
+      "button[value='secondary_button']",
-        "button[value='secondary_button']",
+      "button[value='secondary_button_top']",
-        "button[value='secondary_button_top']",
+      "label.theme",
-        "label.theme",
+      "input[type='radio']",
-        "input[type='radio']",
+    ],
-      ],
+    // Unexpected selectors:
-      // Unexpected selectors:
+    ["main.AW_STEP2", "main.AW_STEP3", "div.tiles-container.info"]
-      ["main.AW_STEP2", "main.AW_STEP3", "div.tiles-container.info"]
+  );
-    );
 
-    await onButtonClick(browser, "button.primary");
+  await onButtonClick(browser, "button.primary");
 
-    const { callCount } = aboutWelcomeActor.onContentMessage;
+  const { callCount } = aboutWelcomeActor.onContentMessage;
-    ok(callCount >= 1, `${callCount} Stub was called`);
+  ok(callCount >= 1, `${callCount} Stub was called`);
-    let clickCall;
+  let clickCall;
-    for (let i = 0; i < callCount; i++) {
+  for (let i = 0; i < callCount; i++) {
-      const call = aboutWelcomeActor.onContentMessage.getCall(i);
+    const call = aboutWelcomeActor.onContentMessage.getCall(i);
-      info(`Call #${i}: ${call.args[0]} ${JSON.stringify(call.args[1])}`);
+    info(`Call #${i}: ${call.args[0]} ${JSON.stringify(call.args[1])}`);
-      if (call.calledWithMatch("", { event: "CLICK_BUTTON" })) {
+    if (call.calledWithMatch("", { event: "CLICK_BUTTON" })) {
-        clickCall = call;
+      clickCall = call;
-      }
     }
-
-    Assert.equal(
-      clickCall.args[0],
-      "AWPage:TELEMETRY_EVENT",
-      "send telemetry event"
-    );
-
-    Assert.equal(
-      clickCall.args[1].message_id,
-      "MY-MOCHITEST-EXPERIMENT_0_AW_STEP1",
-      "Telemetry should join id defined in feature value with screen"
-    );
   }
 
+  Assert.equal(
+    clickCall.args[0],
+    "AWPage:TELEMETRY_EVENT",
+    "send telemetry event"
+  );
+
+  Assert.equal(
+    clickCall.args[1].message_id,
+    "MY-MOCHITEST-EXPERIMENT_0_AW_STEP1",
+    "Telemetry should join id defined in feature value with screen"
+  );
+
   await test_screen_content(
     browser,
     "multistage step 2",

browser/components/newtab/test/browser/browser_aboutwelcome_screen_targeting.js

@@ -115,7 +115,7 @@ add_task(async function test_aboutwelcome_mr_template_easy_setup() {
     "default",
   ]);
 
-  if (!AppConstants.isPlatformAndVersionAtLeast("win", "10")) {
+  if (AppConstants.platform !== "win") {
     return;
   }
 

browser/components/newtab/test/browser/head.js

@@ -22,8 +22,6 @@ const { sinon } = ChromeUtils.importESModule(
 );
 // Set the content pref to make it available across tests
 const ABOUT_WELCOME_OVERRIDE_CONTENT_PREF = "browser.aboutwelcome.screens";
-// Test differently for windows 7 as theme screens are removed.
-const win7Content = AppConstants.isPlatformAndVersionAtMost("win", "6.1");
 // Feature callout constants
 const calloutId = "feature-callout";
 const calloutSelector = `#${calloutId}.featureCallout`;

browser/components/preferences/main.js

@@ -487,11 +487,10 @@ var gMainPane = {
       document.getElementById("dataMigrationGroup").remove();
     }
 
-    // For media control toggle button, we support it on Windows 8.1+ (NT6.3),
+    // For media control toggle button, we support it on Windows, macOS and
-    // MacOs 10.4+ (darwin8.0, but we already don't support that) and
     // gtk-based Linux.
     if (
-      AppConstants.isPlatformAndVersionAtLeast("win", "6.3") ||
+      AppConstants.platform == "win" ||
       AppConstants.platform == "macosx" ||
       AppConstants.MOZ_WIDGET_GTK
     ) {

browser/components/shell/ShellService.sys.mjs

@@ -9,7 +9,6 @@ const lazy = {};
 
 ChromeUtils.defineESModuleGetters(lazy, {
   NimbusFeatures: "resource://nimbus/ExperimentAPI.sys.mjs",
-  WindowsRegistry: "resource://gre/modules/WindowsRegistry.sys.mjs",
 });
 
 XPCOMUtils.defineLazyServiceGetter(
@@ -61,26 +60,6 @@ let ShellServiceInternal = {
     return false;
   },
 
-  isDefaultBrowserOptOut() {
-    if (AppConstants.platform == "win") {
-      let optOutValue = lazy.WindowsRegistry.readRegKey(
-        Ci.nsIWindowsRegKey.ROOT_KEY_CURRENT_USER,
-        "Software\\Mozilla\\Firefox",
-        "DefaultBrowserOptOut"
-      );
-      lazy.WindowsRegistry.removeRegKey(
-        Ci.nsIWindowsRegKey.ROOT_KEY_CURRENT_USER,
-        "Software\\Mozilla\\Firefox",
-        "DefaultBrowserOptOut"
-      );
-      if (optOutValue == "True") {
-        Services.prefs.setBoolPref("browser.shell.checkDefaultBrowser", false);
-        return true;
-      }
-    }
-    return false;
-  },
-
   /**
    * Used to determine whether or not to show a "Set Default Browser"
    * query dialog. This attribute is true if the application is starting
@@ -99,10 +78,6 @@ let ShellServiceInternal = {
       return false;
     }
 
-    if (this.isDefaultBrowserOptOut()) {
-      return false;
-    }
-
     return true;
   },
 
@@ -340,9 +315,9 @@ let ShellServiceInternal = {
 
   // override nsIShellService.setDefaultBrowser() on the ShellService proxy.
   setDefaultBrowser(forAllUsers) {
-    // On Windows 10, our best chance is to set UserChoice, so try that first.
+    // On Windows, our best chance is to set UserChoice, so try that first.
     if (
-      AppConstants.isPlatformAndVersionAtLeast("win", "10") &&
+      AppConstants.platform == "win" &&
       lazy.NimbusFeatures.shellService.getVariable(
         "setDefaultBrowserUserChoice"
       )
@@ -386,7 +361,7 @@ let ShellServiceInternal = {
       return;
     }
 
-    if (AppConstants.isPlatformAndVersionAtLeast("win", "10")) {
+    if (AppConstants.platform == "win") {
       this.setAsDefaultPDFHandlerUserChoice();
     }
   },

browser/components/shell/content/setDesktopBackground.js

@@ -46,11 +46,8 @@ var gSetBackground = {
         multiMonitors = monitors.length > 1;
       }
 
-      if (
+      if (!multiMonitors) {
-        !multiMonitors ||
+        // Hide span option on single monitor systems.
-        AppConstants.isPlatformAndVersionAtMost("win", 6.1)
-      ) {
-        // Hide span option if < Win8 since that's when it was introduced.
         document.getElementById("spanPosition").hidden = true;
       }
     }

browser/components/shell/test/browser_setDefaultPDFHandler.js

@@ -49,11 +49,8 @@ add_task(async function ready() {
   await ExperimentAPI.ready();
 });
 
-// Everything here is Windows 10+.
+// Everything here is Windows.
-Assert.ok(
+Assert.ok(AppConstants.platform == "win", "Platform is Windows");
-  AppConstants.isPlatformAndVersionAtLeast("win", "10"),
-  "Windows version 10+"
-);
 
 add_task(async function remoteEnableWithPDF() {
   let doCleanup = await ExperimentFakes.enrollWithRollout({

browser/components/uitour/UITour.sys.mjs

@@ -1821,7 +1821,7 @@ export var UITour = {
 
       let canSetDefaultBrowserInBackground = true;
       if (
-        AppConstants.isPlatformAndVersionAtLeast("win", "6.2") ||
+        AppConstants.platform == "win" ||
         AppConstants.isPlatformAndVersionAtLeast("macosx", "10.10")
       ) {
         canSetDefaultBrowserInBackground = false;

browser/extensions/report-site-issue/experimentalAPIs/browserInfo.js

@@ -177,7 +177,7 @@ this.browserInfo = class extends ExtensionAPI {
             memoryMb,
           };
 
-          if (AppConstants.isPlatformAndVersionAtLeast("win", "6.2")) {
+          if (AppConstants.platform == "win") {
             data.sec = getSecurityAppData();
           }
 

browser/modules/test/unit/test_InstallationTelemetry.js

@@ -255,8 +255,8 @@ add_task(condition, async function testInstallationTelemetry() {
   // New timestamp and a check to make sure we can find installed MSIX packages
   // by overriding the prefixes a bit further down.
   fullData.install_timestamp = "2";
-  // This check only works on Windows 10 and above
+  // This check only works on Windows
-  if (AppConstants.isPlatformAndVersionAtLeast("win", "10")) {
+  if (AppConstants.platform == "win") {
     fullExtra.other_msix_inst = "true";
   }
   await writeJsonUtf16(dataFilePath, fullData);

toolkit/components/processtools/tests/browser/browser_test_procinfo.js

@@ -8,9 +8,6 @@ const DUMMY_URL =
     "http://example.com"
   ) + "/dummy.html";
 
-const HAS_THREAD_NAMES =
-  AppConstants.platform != "win" ||
-  AppConstants.isPlatformAndVersionAtLeast("win", 10);
 const isFissionEnabled = SpecialPowers.useRemoteSubframes;
 
 const SAMPLE_SIZE = 10;
@@ -67,13 +64,10 @@ add_task(async function test_proc_info() {
 
         checkProcessCpuTime(parentProc);
 
-        // Under Windows, thread names appeared with Windows 10.
+        Assert.ok(
-        if (HAS_THREAD_NAMES) {
+          parentProc.threads.some(thread => thread.name),
-          Assert.ok(
+          "At least one of the threads of the parent process is named"
-            parentProc.threads.some(thread => thread.name),
+        );
-            "At least one of the threads of the parent process is named"
-          );
-        }
 
         Assert.ok(parentProc.memory > 0, "Memory was set");
 

toolkit/components/search/tests/xpcshell/test_searchSuggest.js

@@ -8,9 +8,6 @@
 
 "use strict";
 
-const { AppConstants } = ChromeUtils.importESModule(
-  "resource://gre/modules/AppConstants.sys.mjs"
-);
 const { FormHistory } = ChromeUtils.importESModule(
   "resource://gre/modules/FormHistory.sys.mjs"
 );
@@ -805,10 +802,7 @@ add_task(async function unresolvable_server() {
   Assert.equal(result.local[0].value, "Unresolvable Server Entry");
   Assert.equal(result.remote.length, 0);
 
-  // This latency assert fails on Windows 7 (NT version 6.1), so skip it there.
+  assertLatencyHistogram(histogram, true);
-  if (!AppConstants.isPlatformAndVersionAtMost("win", "6.1")) {
-    assertLatencyHistogram(histogram, true);
-  }
 });
 
 // Exception handling

toolkit/components/telemetry/app/TelemetryEnvironment.sys.mjs

@@ -2081,15 +2081,11 @@ EnvironmentCache.prototype = {
         data = { winPackageFamilyName, ...data };
       }
       data = { ...this._getProcessData(), ...data };
+      data.sec = this._getSecurityAppData();
     } else if (AppConstants.platform == "android") {
       data.device = this._getDeviceData();
     }
 
-    // Windows 8+
-    if (AppConstants.isPlatformAndVersionAtLeast("win", "6.2")) {
-      data.sec = this._getSecurityAppData();
-    }
-
     return data;
   },
 

toolkit/components/telemetry/tests/unit/TelemetryEnvironmentTesting.sys.mjs

@@ -696,8 +696,8 @@ export var TelemetryEnvironmentTesting = {
       lazy.Assert.ok(this.checkNullOrString(data.system.appleModelId));
     }
 
-    // This feature is only available on Windows 8+
+    // This feature is only available on Windows
-    if (AppConstants.isPlatformAndVersionAtLeast("win", "6.2")) {
+    if (AppConstants.platform == "win") {
       lazy.Assert.ok(
         "sec" in data.system,
         "sec must be available under data.system"

toolkit/components/telemetry/tests/unit/test_TelemetrySession.js

@@ -580,20 +580,13 @@ add_task(async function sessionTimeExcludingAndIncludingSuspend() {
     "In test condition, the two uptimes should be close to each other"
   );
 
-  // This however should always hold, except on Windows < 10, where the two
+  // This however should always hold.
-  // clocks are from different system calls, and it can fail in test condition
+  Assert.greaterOrEqual(
-  // because the machine has not been suspended.
+    withSuspend,
-  if (
+    withoutSuspend,
-    AppConstants.platform != "win" ||
+    `The uptime with suspend must always been greater or equal to the uptime
-    AppConstants.isPlatformAndVersionAtLeast("win", "10.0")
+     without suspend`
-  ) {
+  );
-    Assert.greaterOrEqual(
-      withSuspend,
-      withoutSuspend,
-      `The uptime with suspend must always been greater or equal to the uptime
-       without suspend`
-    );
-  }
 
   Services.prefs.setBoolPref(
     "toolkit.telemetry.testing.overrideProductsCheck",

toolkit/modules/subprocess/subprocess_win.sys.mjs

@@ -4,7 +4,6 @@
  * 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/. */
 
-import { AppConstants } from "resource://gre/modules/AppConstants.sys.mjs";
 import {
   BaseProcess,
   PromiseWorker,
@@ -36,10 +35,7 @@ class WinPromiseWorker extends PromiseWorker {
 
     this.call("init", [
       {
-        breakAwayFromJob: !AppConstants.isPlatformAndVersionAtLeast(
+        breakAwayFromJob: false,
-          "win",
-          "6.2"
-        ),
         comspec: Services.env.get("COMSPEC"),
         signalEvent: String(
           ctypes.cast(this.signalEvent, ctypes.uintptr_t).value

toolkit/modules/subprocess/test/xpcshell/test_subprocess.js

@@ -446,7 +446,7 @@ add_task(async function test_subprocess_invalid_json() {
   equal(exitCode, 0, "Got expected exit code");
 });
 
-if (AppConstants.isPlatformAndVersionAtLeast("win", "6")) {
+if (AppConstants.platform == "win") {
   add_task(async function test_subprocess_inherited_descriptors() {
     let { libc, win32 } = ChromeUtils.importESModule(
       "resource://gre/modules/subprocess/subprocess_win.sys.mjs"

toolkit/mozapps/extensions/test/browser/browser_gmpProvider.js

@@ -362,7 +362,7 @@ add_task(async function testEmeSupport() {
     let item = getAddonCard(win, addon.id);
     if (addon.id == WIDEVINE_ID) {
       if (
-        AppConstants.isPlatformAndVersionAtLeast("win", "6") ||
+        AppConstants.platform == "win" ||
         AppConstants.platform == "macosx" ||
         AppConstants.platform == "linux"
       ) {