Sections 23123 and 23123.5 of the California Vehicle Code prohibit use of a mobile phone while driving unless "the electronic wireless communications device is specifically designed and configured to allow voice-operated and hands-free operation" or "that telephone is specifically designed and configured to allow hands-free listening and talking, and is used in that manner while driving."
According to Google Glass' product page, ALL control is done via voice command: http://www.google.com/glass/start/what-it-does/
There's a specific provision disallowing drivers under 18 years of age from using mobile devices at all, but that's not the case here.
HOWEVER, the ticket in the article says in part that the charge was under Section 27602 of the Vehicle Code, which says that "A person shall not drive a motor vehicle if a television receiver, a video monitor, or a television or video screen, or any other similar means of visually displaying a television broadcast or video signal that produces entertainment or business applications, is operating and is located in the motor vehicle at a point forward of the back of the driver’s seat, or is operating and the monitor, screen, or display is visible to the driver while driving the motor vehicle."
the main problem is that the vehicle code does not even contemplate devices that have multiple uses, like smartphones, that can act as phones, texting devices, GPS devices, AND potential video streaming devices.
i'd say the person's best legal recourse is to argue that Google Glass is a mobile phone device and should be considered under Section 23123, rather than a "television" or "video monitor" under Section 27602. and while i'm angry at the police officer for issuing such a charge, the officer also is not in the position of determining what the law is. that's going to have to be a judge.
the ticket also charges the person with generic speeding, so, really, she kinda screwed up to begin with. my guess is that a traffic judge will dismiss the 27602 charge and fine her handily for speeding.