Google Chrome auto login

we have an active directory with office365 emails but want to use google chrome as browsers and to solve the problem between having bookmarks and passwords and history synced between computers, we will register normal google accounts for each user and save the email address and password in some kind of text file in the users home folder but I am in need of an application that signs in the user to google chrome if the user is not already signed on, we have tried roaming profiles on the active directory but have found that it limits us to 1 computer logged in at a time and that it slows down the sign-on.