According to this old thread:
https://vaadin.com/forum/thread/18510843/textfield-browser-autofill
It's possible to tell the browser to auto fill a form. I am able to get the browser to populate values by setting the "name" and "autocomplete" attributes, however the browser does not seem to remember new values entered into the Vaadin form. There are appear to be some restrictions on when Chrome/Firefox will do this (https://developer.mozilla.org/en-US/docs/Web/HTML/Attributes/autocomplete) but some of those restrictions are not easily implemented in Vaadin.
Does anyone have an example of auto fill working both directions (browser filling in values and also remembering new values)?