diff -r 000000000000 -r 6474c204b198 browser/base/content/test/general/browser_bug537474.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/base/content/test/general/browser_bug537474.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,8 @@
+function test() {
+  var currentWin = content;
+  var newWin =
+    browserDOMWindow.openURI(makeURI("about:"), null,
+                             Ci.nsIBrowserDOMWindow.OPEN_CURRENTWINDOW, null)
+  is(newWin, currentWin, "page loads in the current content window");
+  gBrowser.stop();
+}