It probably works similar to how Gemini works in Android for a while now.

You can point or select anywhere on the screen and it understands and searches the context. If you select a text block, even text inside an image, it allows to copy or search the text online. Otherwise it can search the image.

I use it often. It's intuitive and fast even on non-flagship phones.

I'd wager their A/B tests went well enough to warrant a port from phones to their new "Chromebook".