The component design does not allow that currently. It is indeed possible to change that by adding a mapping table into the component design to map the Java based schema column names to names without any restrictions.
Also this component is a bit out dated because of the underlaying library and the usage of OAuth1 protocol.
It would be interesting if there is a considerable demand. If one has interest to it, I could start bulding such kind of component based on the latest Google APIs. I have some experiences in it because I made some of the known Google Analytics components.
Please email me at firstname.lastname@example.org