You can try to the following ways to integrate with google maps. And if you need more functions, you can refer to the JavaScript related APIs mentioned in https://developers.google.com/maps/documentation so that you can create some JS pages and you can load those JS pages into PB.
Solution #1:
inet l_inet
l_inet = create inet
l_inet.HyperLinkToURL( "https://www.google.com/maps" )
Solution #2:
Use Microsoft web browser OLE:
ole_1.object.navigate (' https://www.google.com/maps')