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-rw-r--r--testing/web-platform/tests/longtask-timing/shared-renderer/resources/frame-with-longtask.html14
1 files changed, 14 insertions, 0 deletions
diff --git a/testing/web-platform/tests/longtask-timing/shared-renderer/resources/frame-with-longtask.html b/testing/web-platform/tests/longtask-timing/shared-renderer/resources/frame-with-longtask.html
new file mode 100644
index 0000000000..9d0273e192
--- /dev/null
+++ b/testing/web-platform/tests/longtask-timing/shared-renderer/resources/frame-with-longtask.html
@@ -0,0 +1,14 @@
+<!DOCTYPE HTML>
+<meta charset=utf-8>
+<meta name="viewport" content="width=device-width">
+
+<title>Long Task Frame</title>
+<body>
+<h1>Long Task plus PostMessage</h1>
+
+<script>
+ const begin = window.performance.now();
+ while (window.performance.now() < begin + 60);
+ window.opener.postMessage('Finished.', '*');
+</script>
+</body>