I'm on macOS 10.13.6 on a Mac mini. I'm seeing the following behavior on Google Chome 68.0.3440.106 and Chrome Canary 70.0.3529.3.
I go to https://get.webgl.org/ and I see the message:
Hmm. While your browser seems to support WebGL, it is disabled or unavailable. If possible, please ensure that you are running the latest drivers for your video card.
Firefox and Safari both render the WebGL scene here just fine. Can anyone tell me how to enable WebGL on Chrome?