browser.jar:
*   content/browser/feeds/subscribe.xhtml               (content/subscribe.xhtml) 
*   content/browser/feeds/subscribe.js                  (content/subscribe.js)
*   content/browser/feeds/addFeedReader.xul             (content/addFeedReader.xul)
*   content/browser/feeds/addFeedReader.js              (content/addFeedReader.js)