[whatwg] Challenging canvas.supportsContext

[Boris Zbarsky]

On 6/19/13 5:27 PM, Paul Irish wrote:
> I agree that supportsContext is only useful if it's more accurate that
> !!window.WebGLRenderingContext.

So that's an interesting question.  Should UAs simply not have 
window.WebGLRenderingContext in situations in which supportsContext 
would return false?

-Boris