Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 11 insertions, 0 deletions

diff --git a/dom/tests/browser/perfmetrics/ping_worker.js b/dom/tests/browser/perfmetrics/ping_worker.js
new file mode 100644
index 0000000000..0ed6bb8ba4
--- /dev/null
+++ b/dom/tests/browser/perfmetrics/ping_worker.js
@@ -0,0 +1,11 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+function messageListener(event) {
+  postMessage("pong");
+}
+
+addEventListener("message", { handleEvent: messageListener });