it's the "thin" browsers that are half-embedded in other apps, such as Google News. In the menu you can see "Running in Chrome" and "Open in <yourdefaultbowser>"
This feature is called Android Custom Tabs and it is supported by most browsers on Android afaik.
I use Firefox for this purpose, but it is possible that certain Google apps always use Chrome for this, not entirely sure.
tricot|7 months ago