Bug 1625563 - Add a delay to test_trr.js::test_resolve_not_confirmed to avoid Android intermittent r=dragana

Differential Revision: https://phabricator.services.mozilla.com/D69825

--HG--
extra : moz-landing-system : lando

netwerk/test/unit/test_trr.js

@@ -1730,6 +1730,12 @@ add_task(async function test_resolve_not_confirmed() {
   // Check that the confirmation eventually completes.
   let count = 100;
   while (count > 0) {
+    if (count == 50 || count == 10) {
+      // At these two points we do a longer timeout to account for a slow
+      // response on the server side. This is usually a problem on the Android
+      // because of the increased delay between the emulator and host.
+      await new Promise(resolve => do_timeout(100 * (100 / count), resolve));
+    }
     let [inRequest, inRecord, inStatus] = await new DNSListener(
       `ip${count}.example.org`,
       undefined,