Any way to dismiss "Say hello to your new Chrome browser" in 69?

I had the same problem and successfully dismissed the annoying dialog by doing sign-out from the profile icon at the top right corner of the newtab page (not the top bar of Chrome) and sign-in again.

Close Chrome, open Preferences JSON file in profile directory (usually %LocalAppData%\Google\Chrome\User Data\Default\), Remove this key-value pair "last_known_google_url":"xxxxx", save it.