An hour later, we had his solution packaged, published and available to the Openbravo world!
You can test it yourself by visiting our demo application and opening up the Business Partner screen, Location/Address tab to see something similar to:
Install it in your instance (find it under the "Google map for BP locations" name using the Module Management screen) or check out its forge project.
Note: This module is currently in QA Approved maturity status so if you are installing it in your own Openbravo instance make sure you adjust the module management settings accordingly to be able to find it among the modules listed.
Enjoy!