javascript - What is the name of google chrome rss plugin? -

I have to find out if the user has already installed the Google Chrome RSS plugin or not I use it like JavaScript

If (navigator.plugin [rss_chrome_plugin_name]) {// some stuff if it is installed}

The problem is that I The name of the plugin is not known. Any help?

"RSS Subscription Extension (by Google)"
ID: nlbjncdgjeocebhnmkbbbdekmmmcbfjd