Google Chrome vs my Keychain
You mac has saved Chrome passwords in the key chain.

Open your key chain and sort by typing the name Google in search window so you can do the following easier.

This is what it looks like on my MBA.



Click on the first one of the Google password and then open the 


  access control tab


Set to 


  allow all applications to use


If you are not confident with that setting then use the + and add the Safari browser in to the allowed list.


  Always Allow Access by these application