old_contents: import gtk
  
  from sugar.graphics import units
  
  class FileChooserDialog(gtk.FileChooserDialog):
      def __init__(self, title=None, parent=None,
                   action=gtk.FILE_CHOOSER_ACTION_OPEN, buttons=None):
          gtk.FileChooserDialog.__init__(self, title, parent, action, buttons)
          self.set_default_size(units.points_to_pixels(7 * 40),
                                units.points_to_pixels(7 * 30))
  
new_contents: import gtk
  
  from sugar.graphics import units
  
  class FileChooserDialog(gtk.FileChooserDialog):
      def __init__(self, title=None, parent=None,
                   action=gtk.FILE_CHOOSER_ACTION_OPEN, buttons=None):
          gtk.FileChooserDialog.__init__(self, title, parent, action, buttons)
  
subject: Remove our own sizing