I don’t know exactly what you’re referring to when you say “Google Voice” but I’m sure you must have allowed it one way or another.
If it’s a native feature of Chrome you should know Windows classic desktop hasn’t a permission system, then you allowed full access to your hardware by simply installing Chrome.
If it’s enabled through a plug-in it has no API permission system to allow/disallow either.
If it’s in a web page you must have allowed *.google.com at some point.
I don’t know how extensions are handled.