/usr/share/xul-ext/https-finder/chrome.manifest is in xul-ext-https-finder 091-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 | content httpsfinder                                        jar:chrome/httpsfinder.jar!/content/
skin        httpsfinder        classic/1.0                jar:chrome/httpsfinder.jar!/skin/
locale        httpsfinder        en-US                        jar:chrome/httpsfinder.jar!/locale/en-US/
locale        httpsfinder        de                                jar:chrome/httpsfinder.jar!/locale/de/
locale        httpsfinder        es-ES                        jar:chrome/httpsfinder.jar!/locale/es-ES/
locale        httpsfinder        fi                                jar:chrome/httpsfinder.jar!/locale/fi/
locale        httpsfinder        it                                jar:chrome/httpsfinder.jar!/locale/it/
locale        httpsfinder        nl                                jar:chrome/httpsfinder.jar!/locale/nl/
locale        httpsfinder        pl                                jar:chrome/httpsfinder.jar!/locale/pl/
locale        httpsfinder        pt-BR                        jar:chrome/httpsfinder.jar!/locale/pt/
locale        httpsfinder        pt-PT                        jar:chrome/httpsfinder.jar!/locale/pt/
locale        httpsfinder        sv-SE                        jar:chrome/httpsfinder.jar!/locale/sv-SE/
locale        httpsfinder        zh-CN                        jar:chrome/httpsfinder.jar!/locale/zh-CN/
locale        httpsfinder        zh-TW                        jar:chrome/httpsfinder.jar!/locale/zh-TW/
locale        httpsfinder        ru-RU                        jar:chrome/httpsfinder.jar!/locale/ru-RU/
resource hfShared modules/
overlay chrome://browser/content/browser.xul  chrome://httpsfinder/content/Overlay.xul
 |