As pull request: https://github.com/whatwg/html/pull/4455, OffscreenCanvas needs to have implementation of ImageBitmapRenderingContext.
<rdar://problem/97220721>
Pull request: https://github.com/WebKit/WebKit/pull/4151
Committed 254697@main (b861c55669ed): <https://commits.webkit.org/254697@main> Reviewed commits have been landed. Closing PR #4151 and removing active labels.