Re: It's the microphone, not the browser
I've been crushing permissions on all my apps, anywhere I can, for quite a while now. IMHO there has never been a good reason to allow my browser access to the microphone, my location, my contacts, et al on my phone, and no reason for same on my desktops, so "Off" they go. Yes, that includes Google Play Services. And Firefox on Windows. Plus many, many more.
I keep trying to tell everyone "Only the paranoid survive", but I believe I have grown tired of the repetition.