chrome.extension not exported to content script

[powellnorma]

This causes e.g. the "Reddit Enhancement Suite" to not work (can't access chrome.extension.inIncognitoContext):

Uncaught (in promise) TypeError: Cannot read properties of undefined (reading 'inIncognitoContext')
    at isPrivateBrowsing (foreground.entry.js:15198:29)
    at module35.shouldRun (foreground.entry.js:40259:31)
    at isRunning (foreground.entry.js:47228:177)
    at _addModuleBodyClasses (foreground.entry.js:47321:12)
    at foreground.entry.js:47350:53

To Reproduce
Steps to reproduce the behavior:

1. Install https://chromewebstore.google.com/detail/reddit-enhancement-suite/kbmfpngjjgdllneeigpgjifpgocmfgmb
2. Go to https://old.reddit.com
3. Open dev-tools

Information:

• App Version: 0.8.3

[powellnorma]

Fyi samuelmaddock/electron-browser-shell#175 (comment)

[iamEvanYT]

Got it working without such a hacky approach. However, it requires this PR to be upstreamed.