On Wed, Jan 6, 2016 at 9:52 PM, Anne van Kesteren <ann...@annevk.nl> wrote:

> On Tue, Jan 5, 2016 at 10:18 PM, Robert O'Callahan <rob...@ocallahan.org>
> wrote:
> > That's an option, but it's a very large problem that's very difficult to
> > get right. And there are so many things that need to be plugged, it would
> > make the feature very fragile: change the Web content in some subtle way
> > and suddenly it looks wrong or disappears altogether for no apparent
> reason.
>
> We could also go the other way. And have some kind of opt-in flag that
> requires everything to be CORS-same-origin and doesn't allow :visited
> and plugins or some such. And if you have that enabled you get to use
> some new features. Might be easier than tracking on a per layout box
> basis whether it violates some constraints.
>

Where would you put that flag?

I think this has basically the same problems: very difficult to specify and
police, and fragile when the content changes.

Rob
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