From what I've read online (How can I enable WebGL in my browser? and Wikipedia), WebGL is browser dependent. However, even after following the instructions in the above SuperUser question, Google Earth says my computer doesn't support WebGL. How do I confirm that it's actually my computer hardware, and not the software that doesn't support WebGL?
For reference, I'm using a 2011 MacBook Air with integrated graphics (Intel HD Graphics 3000 384 MB), and the latest version of the Chrome Browser (Version 58.0.3029.81 (64-bit)).