Sets the icon for the bookmark for uri. If href is NULL, unsets the currently set icon. href can either be a full URL for the icon file or the icon name following the Icon Naming specification.
If no bookmark for uri is found one is created.
a valid URI
the URI of the icon for the bookmark, or NULL
the MIME type of the icon for the bookmark
2.12
Sets the icon for the bookmark for uri. If href is NULL, unsets the currently set icon. href can either be a full URL for the icon file or the icon name following the Icon Naming specification.
If no bookmark for uri is found one is created.