Re: hasFeature()

On Thu, Jan 16, 2014 at 11:10 AM, Philip Jägenstedt <philipj@opera.com>wrote:

> On Thu, Jan 16, 2014 at 6:39 PM, Anne van Kesteren <annevk@annevk.nl>
> wrote:
> >
> > Hey,
> >
> > http://dom.spec.whatwg.org/#dom-domimplementation-hasfeature has a
> > weird lifeline basically for SVG and an open issue related to that
> > since it's not exactly clear what the details should be. Is SVG moving
> > away from the fantastical feature testing world as well? Should we
> > just simply always return true?
>
> If it would help, I could attempt to add use counters to Blink, get
> help determine how often hasFeature() is used, and how often it
> returns false.


Adding a UseCounter for hasFeature in Blink is non-trivial, but I am
getting a patch together for it.

In doing so, I noticed that SVGTests relies on the same code, so we will
also catch uses of the SVGTests requiredFeatures, requiredExtensions and
systemLanguage attributes.

Stephen.