Fire signalstatechange as per spec
Created attachment 437734 [details] Patch
Created attachment 438023 [details] Rebasing
Created attachment 438042 [details] Patch
Created attachment 438043 [details] Patch
Committed r282362 (241625@main): <https://commits.webkit.org/241625@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 438043 [details].
<rdar://problem/83073813>