Add missing await to wpt/.../service-worker/update.https.html

promise_reject returns a promise and needs await.

Bug: n/a
Change-Id: Ida68b118be05268d9e74c9c22886f9064537e700
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1708663Reviewed-by: Kenichi Ishibashi <bashi@chromium.org>
Commit-Queue: Makoto Shimazu <shimazu@chromium.org>
Auto-Submit: Makoto Shimazu <shimazu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#679854}

third_party/blink/web_tests/external/wpt/service-workers/service-worker/update.https-expected.txt

 This is a testharness.js-based test.
-Harness Error. harness_status.status = 1 , harness_status.message = assert_throws: function "function() { throw e }" threw object "SecurityError: Failed to update a ServiceWorker: The script resource is behind a redirect, which is disallowed." ("SecurityError") expected object "TypeError" ("TypeError")
 PASS update() should succeed when new script is available.
 PASS update() should fail when mime type is invalid.
-PASS update() should fail when a response for the main script is redirect.
+FAIL update() should fail when a response for the main script is redirect. assert_throws: function "function() { throw e }" threw object "SecurityError: Failed to update a ServiceWorker: The script resource is behind a redirect, which is disallowed." ("SecurityError") expected object "TypeError" ("TypeError")
 PASS update() should fail when a new script contains a syntax error.
 PASS update() should resolve when the install event throws.
 PASS update() should fail when the pending uninstall flag is set.

third_party/blink/web_tests/external/wpt/service-workers/service-worker/update.https.html

@@ -75,7 +75,7 @@ promise_test(async t => {
       await prepare_ready_registration(t, 'bad_mime_type');
   t.add_cleanup(() => registration.unregister());
 
-  promise_rejects(t, 'SecurityError', registration.update());
+  await promise_rejects(t, 'SecurityError', registration.update());
   assert_active_only(registration, expected_url);
 }, 'update() should fail when mime type is invalid.');
 
@@ -84,7 +84,7 @@ promise_test(async t => {
       await prepare_ready_registration(t, 'redirect');
   t.add_cleanup(() => registration.unregister());
 
-  promise_rejects(t, new TypeError(), registration.update())
+  await promise_rejects(t, new TypeError(), registration.update());
   assert_active_only(registration, expected_url);
 }, 'update() should fail when a response for the main script is redirect.');
 
@@ -93,7 +93,7 @@ promise_test(async t => {
       await prepare_ready_registration(t, 'syntax_error');
   t.add_cleanup(() => registration.unregister());
 
-  promise_rejects(t, new TypeError(), registration.update());
+  await promise_rejects(t, new TypeError(), registration.update());
   assert_active_only(registration, expected_url);
 }, 'update() should fail when a new script contains a syntax error.');
 
@@ -117,7 +117,7 @@ promise_test(async t => {
   const frame = await with_iframe(SCOPE);
   t.add_cleanup(() => frame.remove());
 
-  promise_rejects(
+  await promise_rejects(
       t, new TypeError(),
       Promise.all([registration.unregister(), registration.update()]));
 }, 'update() should fail when the pending uninstall flag is set.')