There is more than one way to deal with this. Search on "ubuntu: enter password to unlock keyring" - lots of hits.
Use this command - google-chrome-stable --password-store=basic in a launcher. It always works.
You can reset the "Default keyring" to have a blank password.
Open Applications, Accessories, Passwords and Keys. Delete anything there, usually Login. Create a new Password Keyring called Default or Default keyring. Make it have a blank password. Log out and back in. Be sure that the new keyring is set as default and that it is unlocked. Launch Google Chrome. Note the absence of a login keyring request.