Use Two-Finger Scroll in Google Maps
ScrollMaps allows you to use a two-finger scroll on your Mac trackpad in Google Maps. It's a simple extension that works on most of the major browsers. It's free and you can download it from the Chrome Web Store.
To use it, simply download the extension, click on the icon to the right of the URL bar, and tap "Enable". It's that simple.
It works on the Mac and other operating systems that support it natively. ScrollMaps is designed to work on sites outside of the google.com domain. To activate it on a site, you need to click on the extension icon.