Bug 1704500: Test Windows geolocation utility process restart on crash r=gerard-majax

Make sure that the geolocation utility process restarts for georequests that arrive after a crash. This tests process behavior regardless of whether or not the OS is set to allow geolocation (and in automation, it is not).

Depends on D162944

Differential Revision: https://phabricator.services.mozilla.com/D162945

ipc/glue/test/browser/browser.ini

@@ -14,6 +14,8 @@ skip-if =
 skip-if =
   !crashreporter
   ccov
+[browser_utility_geolocation_crashed.js]
+skip-if = !(os == 'win' && os_version == '10.0')     # Geolocation is remoted only on Windows 8+
 [browser_utility_hard_kill.js]
 [browser_utility_hard_kill_delayed.js] # bug 1754572: we really want hard_kill to be rust before hard_kill_delayed
 [browser_utility_memoryReport.js]

ipc/glue/test/browser/browser_utility_geolocation_crashed.js

@@ -0,0 +1,70 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+async function getGeolocation() {
+  info("Requesting geolocation");
+
+  let resolve;
+  let promise = new Promise((_resolve, _reject) => {
+    resolve = _resolve;
+  });
+
+  navigator.geolocation.getCurrentPosition(
+    () => {
+      ok(true, "geolocation succeeded");
+      resolve(undefined);
+    },
+    () => {
+      ok(false, "geolocation failed");
+      resolve(undefined);
+    }
+  );
+
+  return promise;
+}
+
+add_setup(async function() {
+  // Avoid the permission doorhanger and cache that would trigger instead
+  // of re-requesting location. Setting geo.timeout to 0 causes it to
+  // retry the system geolocation (incl. recreating the utility process)
+  // instead of reusing the MLS geolocation fallback it found the first time.
+  await SpecialPowers.pushPrefEnv({
+    set: [
+      ["geo.prompt.testing", true],
+      ["geo.prompt.testing.allow", true],
+      ["geo.provider.network.debug.requestCache.enabled", false],
+      ["geo.provider.testing", false],
+      ["geo.timeout", 0],
+    ],
+  });
+});
+
+add_task(async function testGeolocationProcessCrash() {
+  info("Start the Windows utility process");
+  await getGeolocation();
+
+  info("Crash the utility process");
+  await crashSomeUtilityActor("windowsUtils");
+
+  info("Restart the Windows utility process");
+  await getGeolocation();
+
+  info("Confirm the restarted process");
+  await checkUtilityExists("windowsUtils");
+
+  info("Kill the utility process");
+  await cleanUtilityProcessShutdown("windowsUtils", true);
+
+  info("Restart the Windows utility process again");
+  await getGeolocation();
+
+  info("Confirm the restarted process");
+  await checkUtilityExists("windowsUtils");
+});
+
+add_task(async function testCleanup() {
+  info("Clean up to avoid confusing future tests");
+  await cleanUtilityProcessShutdown("windowsUtils", true);
+});