GeForce Now is a game streaming service. It was previously possible to use it on deck, but Nvidia is making it much easier to install and get set up. They also recently improved gamepad navigation of their service.
To install, go to their install page in desktop mode and scroll down to the steam deck option. Download and run the script.
The advantage of streaming services like this is getting great performance on lower power devices, and minimal battery usage.
Can chromium be used at all or are there specific google components required?
As far as I know, you can probably use chromium. You’ll have to set that up yourself though, or use a 3rd party tool.