Sets the time the bookmark for
uri was last visited.
If no bookmark for
uri is found then it is created.
The "visited" time should only be set if the bookmark was launched, either using the command line retrieved by get_app_info or by the default application for the bookmark's MIME type, retrieved using get_mime_type. Changing the "visited" time does not affect the "modified" time.
a valid URI
a timestamp or -1 to use the current time