Certain Google-owned domains have caused Chrome users, from even the most skilled researchers to regular users, to question whether they are malicious. These URLs and the domain name has repeatedly caused confusion among developers and researchers due to their suspicious-looking structure. Google should switch to HTTPS to prevent potential potential potential attacks, but administrators should follow best practices such as analyzing traffic from the URLs. Google could secure these URLs better, but it’s not a cause for alarm but simply a legitimate cause for legitimate use.
Source: https://www.bleepingcomputer.com/news/security/what-are-these-suspicious-google-gvt1com-urls/