@jacobrossi I agonized over this text to try to be precise while also avoiding specific gesture details. After an hour, this was the best I could come up with. Do you think it's an improvement?

I'd like to add a web-platform-test case for this, but since which elements support "non-continuous zooming" is out of scope of the spec, I guess I can't - right? Hopefully the jsbin demos are good enough.

Now to fix blink....

In particular, here's the relevant text (since I also foolishly shifted some things around in the same CL):

A touch behavior is supported if allowed by the touch-action properties of all elements between the hit tested element and it's nearest ancestor with the default touch behavior (including both the hit tested element and the element with the default touch behavior).

I talked with @jacobrossi offline and he agreed that (while not perfect) this was definitely a step in the right direction and we should just land it and continue to iterate.