Your source indicates it's part of Google's OK Google feature, which AFAIK is opt-out on Android as well. The headline makes it seem a little more overblown than it is.
Further, most people never even know to opt-out of these tracking options in the first place, because they don't know that Google is collecting voice data.
In my world that means chrome would be able to do that; not that is actually listen/recording/uploading stuff all the time. Thats what the image popup says, at least.