[WPT] Add a test for terminating a worker during top-level await

Bug: 1022182
Change-Id: I98d3897fdc99d42a0b6bb09461bfb228068ddd02
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2586206
Commit-Queue: Hiroki Nakagawa <nhiroki@chromium.org>
Auto-Submit: Hiroshige Hayashizaki <hiroshige@chromium.org>
Reviewed-by: Makoto Shimazu <shimazu@chromium.org>
Reviewed-by: Hiroki Nakagawa <nhiroki@chromium.org>
Cr-Commit-Position: refs/heads/master@{#838619}

third_party/blink/web_tests/external/wpt/workers/Worker-terminate-forever-during-evaluation.html

@@ -38,6 +38,11 @@ for (const test of [
     url: 'support/Worker-run-forever-during-dynamic-import.js',
     options: {type: 'module'},
     description: 'Worker is terminated during dynamic import() (module)'
+  },
+  {
+    url: 'support/Worker-run-forever-during-top-level-await.js',
+    options: {type: 'module'},
+    description: 'Worker is terminated during top-level await'
   }
 ]) {
   async_test((t) => {

third_party/blink/web_tests/external/wpt/workers/support/Worker-run-forever-during-top-level-await.js

+await 1;
+postMessage('start');
+onerror = () => postMessage('onerror');
+while(1);