diff -r 000000000000 -r 6474c204b198 layout/tools/recording/recording.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/layout/tools/recording/recording.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,47 @@
+/* -*- Mode: js; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- /
+/* vim: set shiftwidth=4 tabstop=8 autoindent cindent expandtab: */
+/* 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/. */
+
+const CC = Components.classes;
+const CI = Components.interfaces;
+
+const NS_GFXINFO_CONTRACTID = "@mozilla.org/gfx/info;1";
+
+var gContainingWindow = null;
+
+var gBrowser;
+
+function OnDocumentLoad(evt) {
+    if (evt.target != gBrowser.contentDocument || evt.target.location == "about:blank")
+        return;
+    gBrowser.removeEventListener("load", OnDocumentLoad, true);
+    gContainingWindow.close();
+}
+
+this.OnRecordingLoad = function OnRecordingLoad(win) {
+    if (win === undefined || win == null) {
+        win = window;
+    }
+    if (gContainingWindow == null && win != null) {
+        gContainingWindow = win;
+    }
+
+    gBrowser = gContainingWindow.document.getElementById("browser");
+
+    var gfxInfo = (NS_GFXINFO_CONTRACTID in CC) && CC[NS_GFXINFO_CONTRACTID].getService(CI.nsIGfxInfo);
+    var info = gfxInfo.getInfo();
+    dump(info.AzureContentBackend + "\n");
+    if (info.AzureContentBackend == "none") {
+        alert("Page recordings may only be made with Azure content enabled.");
+        gContainingWindow.close();
+        return;
+    }
+
+    gBrowser.addEventListener("load", OnDocumentLoad, true);
+
+    var args = window.arguments[0].wrappedJSObject;
+
+    gBrowser.loadURI(args.uri);
+};