It is on my pixel (so worth a try on whatever's shipping with Android One).
I thought it was a bit 'hit or miss' at first - if you hold the camera over the code, after a bit it decides to pop up a link over the QR in preview. Then realized if you tap on the code, it instantly displays the link. Just had a fun few minutes on https://www.google.com/search?q=qr+codes&tbm=isch - as the tap allows it to handle multiple ones within the same frame.
I thought it was a bit 'hit or miss' at first - if you hold the camera over the code, after a bit it decides to pop up a link over the QR in preview. Then realized if you tap on the code, it instantly displays the link. Just had a fun few minutes on https://www.google.com/search?q=qr+codes&tbm=isch - as the tap allows it to handle multiple ones within the same frame.