This needs to be created so that...say, if a page doesn't have any link_to_remote's on it, but then you use some other mechanism to AJAX in some content that DOES contain a link_to_remote. This normally wouldn't work because the header coded needed to enable the functionality of link_to_remote's would never have been loaded. This would just be a "js_depends_on(:method, :link_to_remote)" sort of thing that would call the process_dependency method in the parent library class.