Google Chrome 77 brings Site Isolation to Android and desktop users get additional protections. Chrome 77 for Android gets a slimmed-down version of the security feature. Chrome’s browser process knows what the renderer process is dedicated to, so it can restrict which cookies, and site data the entire process is allowed to receive. With this feature, Chrome will only protect sites that you login into with a password. This is to reduce resource utilization on mobile devices, which have less memory and CPU processing power than a desktop computer.
Source: https://www.bleepingcomputer.com/news/google/google-chrome-77-added-new-site-isolation-security-features/