[whatwg/dom] Add "disable shadow" flag check to Element.attachShadow() (#760)

This fixes a part of https://github.com/w3c/webcomponents/issues/758

This and https://github.com/whatwg/html/pull/4324 should be merged at the same time.


Test: TODO

You can view, comment on, or merge this pull request online at:

  https://github.com/whatwg/dom/pull/760

-- Commit Summary --

  * Add "disable shadow" flag check to Element.attachShadow()

-- File Changes --

    M dom.bs (17)

-- Patch Links --

https://github.com/whatwg/dom/pull/760.patch
https://github.com/whatwg/dom/pull/760.diff

-- 
You are receiving this because you are subscribed to this thread.
Reply to this email directly or view it on GitHub:
https://github.com/whatwg/dom/pull/760