Google’s retention policy describes how and why Google retains data.
Although this policy describes features that are specific to Chrome, any personal information that is provided to Google or stored in your Google Account will be used and protected in accordance with the Google Privacy Policy, as changed from time to time. Learn how to control the information that's collected, stored, and shared when you use the Google Chrome browser on your computer or mobile device, Chrome OS, and when you enable Safe Browsing in Chrome.