Code review comment for lp:~attente/unity/gnome-key-grabber

Even though the tests are non-visual, I think it's easiest for us to test the key presses and releases using AP.

Unity already has AP tests for the panel that are currently failing, no? I saw them under unity.tests.test_panel.PanelKeyNavigationTests, and running them I only get a test failure for test_panel_first_menu_show_works, but it seems to be for the Alt+F10 key which is unrelated to this MP.