Bug 1788927 - Convert browser/actors/AboutTabCrashed* JSM modules to ESMs. r=mconley

Differential Revision: https://phabricator.services.mozilla.com/D157042

browser/actors/AboutTabCrashedChild.sys.mjs

@@ -3,10 +3,8 @@
  * 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/. */
 
-var EXPORTED_SYMBOLS = ["AboutTabCrashedChild"];
-
 const { RemotePageChild } = ChromeUtils.import(
   "resource://gre/actors/RemotePageChild.jsm"
 );
 
-class AboutTabCrashedChild extends RemotePageChild {}
+export class AboutTabCrashedChild extends RemotePageChild {}

browser/actors/AboutTabCrashedParent.sys.mjs

@@ -4,11 +4,8 @@
 
 "use strict";
 
-var EXPORTED_SYMBOLS = ["AboutTabCrashedParent"];
+import { XPCOMUtils } from "resource://gre/modules/XPCOMUtils.sys.mjs";
 
-const { XPCOMUtils } = ChromeUtils.importESModule(
-  "resource://gre/modules/XPCOMUtils.sys.mjs"
-);
 const lazy = {};
 XPCOMUtils.defineLazyModuleGetters(lazy, {
   SessionStore: "resource:///modules/sessionstore/SessionStore.jsm",
@@ -18,7 +15,7 @@ XPCOMUtils.defineLazyModuleGetters(lazy, {
 // A list of all of the open about:tabcrashed pages.
 let gAboutTabCrashedPages = new Map();
 
-class AboutTabCrashedParent extends JSWindowActorParent {
+export class AboutTabCrashedParent extends JSWindowActorParent {
   didDestroy() {
     this.removeCrashedPage();
   }

browser/actors/moz.build

@@ -44,8 +44,8 @@ FINAL_TARGET_FILES.actors += [
     "AboutProtectionsParent.jsm",
     "AboutReaderChild.jsm",
     "AboutReaderParent.jsm",
-    "AboutTabCrashedChild.jsm",
-    "AboutTabCrashedParent.jsm",
+    "AboutTabCrashedChild.sys.mjs",
+    "AboutTabCrashedParent.sys.mjs",
     "BlockedSiteChild.jsm",
     "BlockedSiteParent.jsm",
     "BrowserProcessChild.jsm",

browser/components/BrowserGlue.jsm

@@ -352,11 +352,10 @@ let JSWINDOWACTORS = {
 
   AboutTabCrashed: {
     parent: {
-      moduleURI: "resource:///actors/AboutTabCrashedParent.jsm",
+      esModuleURI: "resource:///actors/AboutTabCrashedParent.sys.mjs",
     },
     child: {
-      moduleURI: "resource:///actors/AboutTabCrashedChild.jsm",
-
+      esModuleURI: "resource:///actors/AboutTabCrashedChild.sys.mjs",
       events: {
         DOMDocElementInserted: { capture: true },
       },