That wouldn't prevent Google from still seeing your SSID. It would prevent them from logging on, but not seeing it.
There are even free tools for plain old dumb users that run on your laptop that can see hidden SSIDs.
Here are 2:
I am sure Google's roaming vans can just as easily see hidden SSIDs.
I use the tool to see what channels and signal strengths neighbors are using to choose the least crowded WiFi channel.
The nine most terrifying words in the English language are, I'm from the government and I'm here to help.