diff -r 000000000000 -r 6474c204b198 dom/interfaces/html/nsIDOMMozBrowserFrame.idl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/interfaces/html/nsIDOMMozBrowserFrame.idl	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,27 @@
+/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set tw=80 expandtab softtabstop=2 ts=2 sw=2: */
+
+/* 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 "nsISupports.idl"
+
+[scriptable, uuid(4CAFE116-581B-4194-B0DE-7F02378FC51D)]
+interface nsIDOMMozBrowserFrame : nsISupports
+{
+  /**
+   * <iframe> element may have the mozbrowser attribute.
+   *
+   * The mozbrowser attribute has no effect unless the <iframe> element is
+   * contained in a document privileged to create browser frames.
+   *
+   * An <iframe> element in a privileged document with the mozbrowser attribute
+   * emits a variety of events when various things happen inside the frame.
+   *
+   * This will be documented eventually, but for more information at the moment,
+   * see dom/browser-element/BrowserElement{Child,Parent}.js.
+   *
+   */
+  attribute boolean mozbrowser;
+};