Changing navigator.userAgent using Chrome Extension

Question

I am trying to overload the navigator.userAgent using a simple chrome extension. As the content scripts operate in isolated env, I tried to create a script element and write

Answer 1

Are you trying to change the User-Agent header that gets sent in requests? You'll have to use the declarativeWebRequest or webRequest APIs.

Running content scripts in the page only occurs after the requests have been sent.