1 files changed, 7 insertions, 0 deletions
diff --git a/testing/web-platform/tests/FileAPI/url/resources/create-helper.html b/testing/web-platform/tests/FileAPI/url/resources/create-helper.html
new file mode 100644
index 0000000000..fa6cf4e671
--- /dev/null
+++ b/testing/web-platform/tests/FileAPI/url/resources/create-helper.html
@@ -0,0 +1,7 @@
+<!doctype html>
+<script>
+self.addEventListener('message', e => {
+  let url = URL.createObjectURL(e.data.blob);
+  e.source.postMessage({url: url}, '*');
+});
+</script>
+\ No newline at end of file