This extension will notify you via desktop notification when new items occur in New Relic RSS feed for application and system monitoring.
After installing this extension go to the New Relic monitoring website (https://rpm.newrelic.com) and log in. In the application overview you will see a new link "[Add to Notifier]" next to the RSS icon (upper right area). Click it to add this RSS feed to the "New Relic Notifier".
Every time you enable this extension by clicking the icon in the browser bar (enabled-state is indicated by a green "on" label), all feed items of the last 12 hours will appear as notifications. After that, only new items in this feed will show up.