This is a follow up of 269664@main. PackedColor::RGBA constructor can be used to convert from SRGBA to PackedColor::RGBA in one step.
<rdar://problem/117765204>
Pull request: https://github.com/WebKit/WebKit/pull/19796
Committed 270038@main (9216f889c29f): <https://commits.webkit.org/270038@main> Reviewed commits have been landed. Closing PR #19796 and removing active labels.