diff -r 000000000000 -r 6474c204b198 dom/mobilemessage/interfaces/nsIDOMMozMobileMessageThread.idl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/mobilemessage/interfaces/nsIDOMMozMobileMessageThread.idl	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,32 @@
+/* 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/. */
+
+#include "domstubs.idl"
+#include "nsISupports.idl"
+
+[scriptable, builtinclass, uuid(525ad3a6-59a9-11e3-bdc3-836486cb58be)]
+interface nsIDOMMozMobileMessageThread : nsISupports
+{
+  // Unique identity of the thread.
+  readonly attribute unsigned long long id;
+
+  // Last (MMS) message subject.
+  readonly attribute DOMString          lastMessageSubject;
+
+  // Message body of the last message in the thread.
+  readonly attribute DOMString          body;
+
+  // Total unread messages in the thread.
+  readonly attribute unsigned long long unreadCount;
+
+  // Participant addresses of the thread.
+  [implicit_jscontext]
+  readonly attribute jsval              participants; // DOMString[]
+
+  // Timestamp of the last message in the thread.
+  readonly attribute DOMTimeStamp       timestamp;
+
+  // Message type of the last message in the thread.
+  readonly attribute DOMString          lastMessageType;
+};