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-rw-r--r--testing/web-platform/tests/longtask-timing/resources/makelongtask.js3
1 files changed, 3 insertions, 0 deletions
diff --git a/testing/web-platform/tests/longtask-timing/resources/makelongtask.js b/testing/web-platform/tests/longtask-timing/resources/makelongtask.js
new file mode 100644
index 0000000000..75de5453b5
--- /dev/null
+++ b/testing/web-platform/tests/longtask-timing/resources/makelongtask.js
@@ -0,0 +1,3 @@
+/* Generate a slow task. */
+const begin = window.performance.now();
+while (window.performance.now() < begin + 60);