1 files changed, 16 insertions, 0 deletions
diff --git a/testing/web-platform/tests/lifecycle/resources/subframe.html b/testing/web-platform/tests/lifecycle/resources/subframe.html
new file mode 100644
index 0000000000..2f1d70a80a
--- /dev/null
+++ b/testing/web-platform/tests/lifecycle/resources/subframe.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<script>
+window.addEventListener('load', () => {
+  window.parent.postMessage('load');
+});
+
+document.addEventListener('freeze', () => {
+  window.parent.postMessage('freeze');
+});
+
+document.addEventListener('resume', () => {
+  window.parent.postMessage('resume');
+});
+
+</script>