I’m on ChromeOS. I appreciate that native is usually best, it’s just at least in the case of my app it makes it feel like a bunch of web 1.0 iframes. I feel like custom scrollbars are pretty standard on embedded elements in web apps now- Facebook uses them on their sidebars, Pixlr, Codecademy, Cloud9, Nitrous all use them, pretty much anything you see on the Chrome web store will use them.
If that’s not practical, is there any way to set overflow:hidden so I can just hide the scrollbars on my app?