>the thing with chromium is: it is open source (you can find the credentials) No, you have to get your own API keys via Google Cloud API Manager before buildin

>the thing with chromium is: it is open source (you can find the credentials) No, you have to get your own API keys via Google Cloud API Manager before building chromium. That's the reason why Chromium on Windows doesn't let you log in. I presume Chromium on linux distros will use an API key of the package maintainer. Also, in most closed source binaries (which chrome is a part because it has binary blobs not present in Chromium - see Google Cast, etc) you will have to sign a EULA where you agree to no disassemble and use that API key, so doing so is illegal too.