Bug 746183 - events/test_focus_contextmenu.xul times out on OS X, disable for now

accessible/tests/mochitest/events/test_focus_contextmenu.xul

@@ -27,6 +27,13 @@
     var gQueue = null;
     function doTests()
     {
+      // bug 746183 - Whole file times out on OS X
+      if (MAC) {
+        todo(false, "Reenable on mac after fixing bug 746183!");
+        SimpleTest.finish();
+        return;
+      }
+
       // Test focus events.
       gQueue = new eventQueue();