In Google Chrome Translate Bar, I accidentally configured the browser to never translate a foreign site I was browsing. I wanted to undo the setting, but apparently there is no UI to undo. Neither there is a UI to edit the list of sites blacklisted from translating. I had to find Google Chrome Preferences file, which in Linux is ~/.config/google-chrome/Default/Preferences. The Preferences file is apparently in JSON format. Somewhere near the bottom of the file, I found these two lines:
"translate_language_blacklist": [ "ru" ],The "translate_language_blacklist" apparently lists all languages you configured never to translate. The "translate_site_blacklist" lists all the sites you never wanted to be translated. Just delete the whole line or just the site you want to be removed from the list.
"translate_site_blacklist": [ "www.lemonde.fr" ],