1 files changed, 14 insertions, 0 deletions
diff --git a/components/script/dom/webidls/MessageChannel.webidl b/components/script/dom/webidls/MessageChannel.webidl
new file mode 100644
index 00000000000..f48fe643353
--- /dev/null
+++ b/components/script/dom/webidls/MessageChannel.webidl
@@ -0,0 +1,14 @@
+/* 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/. */
+/*
+ * The origin of this IDL file is:
+ * https://html.spec.whatwg.org/multipage/#messagechannel
+ */
+
+[Exposed=(Window,Worker)]
+interface MessageChannel {
+  constructor();
+  readonly attribute MessagePort port1;
+  readonly attribute MessagePort port2;
+};