The process for validating Chrome pretty straightforward. Select the button that looks like three vertical dots (next to the address bar) and select More Tools | Developer Tools or use the keyboard shortcut Cmd/Ctrl + Shift + I:
Accessing Developer Tools in Google Chrome
Once the Developer Tools window appears, select the Console tab, type WebAssembly, and press Enter. If you see this, your browser is valid:
Results of WebAssembly validation in Google Chrome's Developer Tools console