I made an userscript that inject RSS feed into <head> to make Flickr RSS works:
https://gist.github.com/AntoineTurmel/0165ffacca59441045b8
This script works with Firefox default RSS feature, Google Chrome but it doesn't this to work with your extension.
Either with Tampermonkey or Violentmonkey the script is loaded and put the <link> on the page, but it failed to detect this RSS with your extension.
I made an userscript that inject RSS feed into
<head>to make Flickr RSS works:https://gist.github.com/AntoineTurmel/0165ffacca59441045b8
This script works with Firefox default RSS feature, Google Chrome but it doesn't this to work with your extension.
Either with Tampermonkey or Violentmonkey the script is loaded and put the
<link>on the page, but it failed to detect this RSS with your extension.