includeShadowRoots option for DOMParser should be disabled by default.
Pull request: https://github.com/WebKit/WebKit/pull/8492
Committed 258768@main (fefa4f6d0b96): <https://commits.webkit.org/258768@main> Reviewed commits have been landed. Closing PR #8492 and removing active labels.
<rdar://problem/104108429>