Sort the registrations returned by getRegistrations() by registration…

… ID.

This patch makes the order of the registrations returned by
getRegistrations() be sorted by registration ID, which fixes the flaky
test of getregistrations.https.html.

Bug:925740
Change-Id: Iaa5716eec886232df61bd23487fbae5c63413e9c

service-workers/service-worker/getregistrations.https.html

@@ -31,14 +31,19 @@
 promise_test(async t => {
   const scope1 = 'resources/scope/getregistrations/scope1';
   const scope2 = 'resources/scope/getregistrations/scope2';
+  const scope3 = 'resources/scope/getregistrations/scope12';
+
   const script = 'resources/empty-worker.js';
   t.add_cleanup(() => service_worker_unregister(t, scope1));
   t.add_cleanup(() => service_worker_unregister(t, scope2));
+  t.add_cleanup(() => service_worker_unregister(t, scope3));
 
   const registrations = [
       await service_worker_unregister_and_register(t, script, scope1),
-      await service_worker_unregister_and_register(t, script, scope2)
+      await service_worker_unregister_and_register(t, script, scope2),
+      await service_worker_unregister_and_register(t, script, scope3),
   ];
+
   const value = await navigator.serviceWorker.getRegistrations();
   assert_array_equals(value, registrations);
 }, 'Register multiple times then getRegistrations');