diff -r 000000000000 -r 6474c204b198 embedding/browser/webBrowser/nsICommandHandler.idl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/embedding/browser/webBrowser/nsICommandHandler.idl	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,40 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* 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"
+
+interface nsIDOMWindow;
+
+[scriptable, uuid(731C6C50-67D6-11d4-9529-0020183BF181)]
+interface nsICommandHandlerInit : nsISupports
+{
+	attribute nsIDOMWindow window;
+};
+
+[scriptable, uuid(34A4FCF0-66FC-11d4-9528-0020183BF181)]
+interface nsICommandHandler : nsISupports
+{
+	/*
+	 * Execute the specified command with the specified parameters and return
+	 * the result to the caller. The format of the command, parameters and 
+	 * the result are determined by the acutal implementation.
+	 */
+    string exec(in string aCommand, in string aParameters);
+	/*
+	 * Query the status of the specified command with the specified parameters
+	 * and return the result to the caller. The format of the command,
+	 * parameters and the result are determined by the implementation.
+	 */
+    string query(in string aCommand, in string aParameters);
+};
+
+%{ C++
+//	{3A449110-66FD-11d4-9528-0020183BF181} - 
+#define NS_COMMANDHANDLER_CID \
+{ 0x3a449110, 0x66fd, 0x11d4, { 0x95, 0x28, 0x0, 0x20, 0x18, 0x3b, 0xf1, 0x81 } }
+#define NS_COMMANDHANDLER_CONTRACTID \
+"@mozilla.org/embedding/browser/nsCommandHandler;1"
+%}
+