chrome.manifest

content fp-unread chrome/content/
locale fp-unread en-US chrome/locales/en-US/
locale fp-unread de chrome/locales/de/
locale fp-unread fr chrome/locales/fr/
locale fp-unread sv-SE chrome/locales/sv-SE/
locale fp-unread sl chrome/locales/sl/
overlay chrome://messenger/content/messenger.xul chrome://fp-unread/content/fp-unread-overlay.xul