Bing vs Google maps – closing the left panel

You completed a search for a place on both Google and Bing and now wish to close the left panel. Which one is more obvious?

In case you are unable to find it, the action to close the left panel in Bing is in the map itself. You can see it at the bottom right (above Blvd). I was still confused after finding it – will it close the left panel or scroll left?