Before https://webkit.org/b/237175, the text-decoration-line and text-decoration properties were 2 longhands that shared a computed value, accessed via RenderStyle::textDecoration(). But now text-decoration is a proper shorthand, and it expands to text-decoration-line, text-decoration-color, etc. So it doesn't make much sense to continue accessing the line via textDecoration(), it should be textDecorationLine() instead. Same for RenderStyle::setTextDecoration(), etc.
Created attachment 453679 [details] Patch
<rdar://problem/90065611>
Tools/Scripts/svn-apply failed to apply attachment 453679 [details] to trunk. Please resolve the conflicts and upload a new patch.
Created attachment 454633 [details] Patch
Committed r291257 (248409@main): <https://commits.webkit.org/248409@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 454633 [details].