I ran into this last week (with LastPass, not Chrome - this seems to be a common practice): I have a form where users enter information about their suppliers (I make restaurant management software). This includes a field for the contact email address, which LastPass was autofilling the email address the user used to log in. This happened silently, quickly enough that users wouldn't notice it on page transition, and w…
So at some point a colleague went ahead, found the template and added a fake username and password field at the very beginning of the form that had something like "position: absolute; top: -2000" (after an hour of failed attempts with the autofill attribute and using hidden fields and whatnot).
So yes, f*ck those Google devs on their high horse.