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diff --git a/remote/shared/AppInfo.sys.mjs b/remote/shared/AppInfo.sys.mjs
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+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * 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";
+
+const ID_FIREFOX = "{ec8030f7-c20a-464f-9b0e-13a3a9e97384}";
+const ID_THUNDERBIRD = "{3550f703-e582-4d05-9a08-453d09bdfdc6}";
+
+/**
+ * Extends Services.appinfo with further properties that are
+ * used by different protocols as handled by the Remote Agent.
+ *
+ * @typedef {object} RemoteAgent.AppInfo
+ * @property {boolean} isAndroid - Whether the application runs on Android.
+ * @property {boolean} isLinux - Whether the application runs on Linux.
+ * @property {boolean} isMac - Whether the application runs on Mac OS.
+ * @property {boolean} isWindows - Whether the application runs on Windows.
+ * @property {boolean} isFirefox - Whether the application is Firefox.
+ * @property {boolean} isThunderbird - Whether the application is Thunderbird.
+ *
+ * @since 88
+ */
+export const AppInfo = new Proxy(
+ {},
+ {
+ get(target, prop, receiver) {
+ if (target.hasOwnProperty(prop)) {
+ return target[prop];
+ }
+
+ return Services.appinfo[prop];
+ },
+ }
+);
+
+// Platform support
+
+ChromeUtils.defineLazyGetter(AppInfo, "isAndroid", () => {
+ return Services.appinfo.OS === "Android";
+});
+
+ChromeUtils.defineLazyGetter(AppInfo, "isLinux", () => {
+ return Services.appinfo.OS === "Linux";
+});
+
+ChromeUtils.defineLazyGetter(AppInfo, "isMac", () => {
+ return Services.appinfo.OS === "Darwin";
+});
+
+ChromeUtils.defineLazyGetter(AppInfo, "isWindows", () => {
+ return Services.appinfo.OS === "WINNT";
+});
+
+// Application type
+
+ChromeUtils.defineLazyGetter(AppInfo, "isFirefox", () => {
+ return Services.appinfo.ID == ID_FIREFOX;
+});
+
+ChromeUtils.defineLazyGetter(AppInfo, "isThunderbird", () => {
+ return Services.appinfo.ID == ID_THUNDERBIRD;
+});
+
+export function getTimeoutMultiplier() {
+ if (
+ AppConstants.DEBUG ||
+ AppConstants.MOZ_CODE_COVERAGE ||
+ AppConstants.ASAN
+ ) {
+ return 4;
+ }
+ if (AppConstants.TSAN) {
+ return 8;
+ }
+
+ return 1;
+}