Google really is pushing forward what browsers do - I am not sure if that's a good thing. Especially in regards to privacy and security. Maybe they should separate browser from OS in some meaningful way. These capabilities should not be easily available in your ordinary web browser. Same with WebUSB that hackers can use to mount your USB drives and read data or eg. steal passwords from things like ubikeys... I know the analogy is a bit flawed, but it reminds me of all the power that Active X provided back in the day, when Microsoft tried to make the browser the OS.