Earlier quoted context omitted.
Well I tried to download chrome yesterday, and you STILL get www.downloadchromenow.com and other spam site adverts at the top of the results, which absolutely serve malware/spyware Until they sort out their ads it's true, it is a dangerous site
Like the other peer comments, this does not show up for me. I'm afraid there's a good chance you already have some malware (or at least a rogue extension) that is inserting ads into your pages.
I can assure you that for many years Google has been serving ads that link to malware for search terms like "firefox". I've seen them across different machines, different browsers, different ISPs, different OSs.
The situation with firefox seems better now but only because Mozilla is seemingly buying up all the ads for searches with "firefox" in.
Here's a post about it from a year and a half ago that also links to several earlier posts along the same lines: https://news.ycombinator.com/item?id=8879229