Did you update from the UI of a previous installation or download the full installation setup file and run that (whilst previous version installed, e.g. over the top) or did you do a clean install ?

Depending on how you updated would give you different screens.
Normally after the update installation you are asked to reboot - after the reboot there is a completion screen which has the google chrome options, image1.

An install over the top (or custom or clean install) normally gives you screen right at the start of the install with the google chrome options, image2 (click to expand.