diff -r 000000000000 -r 6474c204b198 xpfe/appshell/public/nsIPopupWindowManager.idl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/xpfe/appshell/public/nsIPopupWindowManager.idl	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,35 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 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/. */
+
+/**
+ * This is the interface to the Popup Window Manager: an object which
+ * maintains popup window permissions by website.
+ */
+
+#include "nsISupports.idl"
+
+interface nsIPrincipal;
+
+[scriptable, uuid(66386aa9-2088-4bae-82c7-9f58bc02be64)]
+interface nsIPopupWindowManager : nsISupports {
+
+  /**
+   * These values are returned by the testPermission method
+   */
+  const uint32_t ALLOW_POPUP = 1;
+  const uint32_t DENY_POPUP = 2;
+  const uint32_t ALLOW_POPUP_WITH_PREJUDICE = 3;
+
+  /**
+   * Test whether a website has permission to show a popup window.
+   * @param   principal is the principal to be tested
+   * @return  one of the enumerated permission actions defined above
+   */
+  uint32_t testPermission(in nsIPrincipal principal);
+};
+
+%{ C++
+#define NS_POPUPWINDOWMANAGER_CONTRACTID "@mozilla.org/PopupWindowManager;1"
+%}