Add m-esr52 at 52.6.0

1 files changed, 8 insertions, 0 deletions

diff --git a/dom/messagechannel/tests/sharedWorker_messageChannel.js b/dom/messagechannel/tests/sharedWorker_messageChannel.js
new file mode 100644
index 000000000..4b24642f9
--- /dev/null
+++ b/dom/messagechannel/tests/sharedWorker_messageChannel.js
@@ -0,0 +1,8 @@
+onconnect = function(evt) {
+  var mc = new MessageChannel();
+
+  evt.ports[0].postMessage(42, [mc.port2]);
+  mc.port1.onmessage = function(e) {
+    mc.port1.postMessage(e.data);
+  }
+}