diff -r 000000000000 -r 6474c204b198 dom/webidl/InterAppMessagePort.webidl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/webidl/InterAppMessagePort.webidl	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,24 @@
+/* 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/. */
+
+// TODO Bug 907060 Per off-line discussion, after the MessagePort is done
+// at Bug 643325, we will start to refactorize the common logic of both
+// Inter-App Communication and Shared Worker. For now, we hope to design an
+// MozInterAppMessagePort to meet the timeline, which still follows exactly
+// the same interface and semantic as the MessagePort is. In the future,
+// we can then align it back to MessagePort with backward compatibility.
+
+[HeaderFile="mozilla/dom/InterAppComm.h",
+ Func="mozilla::dom::InterAppComm::EnabledForScope",
+ Constructor(DOMString messagePortID),
+ JSImplementation="@mozilla.org/dom/inter-app-message-port;1"]
+interface MozInterAppMessagePort : EventTarget {
+  void postMessage(any message);
+
+  void start();
+
+  void close();
+
+  attribute EventHandler onmessage;
+};