That's what I thought at first too. Once I saw the yellow ones it made more sense :).

It's the O:s in the google-logo

Ah, that makes more sense. Opera doesn't exactly represent the Zerg of browsers ;)

It doesn't, but that didn't refrain from me laughing about the search results getting trounced by what really looks like Opera logos.

That's funny. That's exactly what I thought when I first saw it. I figured that's because I opened the page in Opera (my default browser) but then I later realized it was open in Chrome. The O in Google explanation makes more sense, but it really does look a lot like the Opera icon.