Change language in Chrome

Open Chrome and clic on ..., on your right and the clic on "Paramètres" (Settings).

Go at the bottom and clic on Afficher les paramètres avancés..." (Show advanced settings...)

Find Langues (Languages) and clic on "Paramètres de langue et de saisie" (Language and input settings...

Clic on "Ajouter" (Add) and find your language then clic OK.

Your language has been added.  Clic on "Afficher Google Chrome dans cette langue" (Display Google Chrome in this language).

You will see a yellow highlighted note (Please close all Google Chrome windows and relaunch it for this change to take effect).  Clic OK and close Google Chrome.