I will describe how to add an invocation parameter for Firefox, which I use, and you can adapt the procedure to Chrome. This involves editing the registry, so take first all due precautions, including creating a system restore point.
Open regedit, and search for
HKEY_CLASSES_ROOT\.html. Click on both, and you will see a
(Default) entry, which for Firefox contains the value
Now position yourself on
(Default) entry contains the Firefox command invocation. Modify it to include the additional parameter (
-disable-webgl in your case).
This should have instant effect, but you might possibly need to logout and login.
Other registry keys to verify that they use the same handler (FirefoxHTML) are: