Attempt to fix windows bustage from test for bug 409604

content/events/test/test_bug409604.html

@@ -262,7 +262,7 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=409604
         <td>a</td><td><a href="#" onclick="handleClick(event.target); return false;" accesskey="a">test link</a></td>
       </tr>
       <tr>
-        <td>area</td><td><img src="about:logo" width="300" height="236" usemap="#map">
+        <td>area</td><td><img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAIAAACQd1PeAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAgY0hSTQAAeiYAAICEAAD6AAAAgOgAAHUwAADqYAAAOpgAABdwnLpRPAAAAAxJREFUGFdjeCujAgADJwEuFWu%2B6QAAAABJRU5ErkJggg%3D%3D" width="10" height="10" usemap="#map">
           <map id="map" name="map"><area shape="rect" coords="0,0,82,126" href="#"
             onclick="handleClick(event.target); return false;" accesskey="b"></map>
         </td>