Computed style for background-position should not use "left" and "top" keywords
Created attachment 424535 [details] Patch
Filed a WPT PR to address the regressing WPT test at https://github.com/web-platform-tests/wpt/pull/28284.
Created attachment 424646 [details] Patch
This patch modifies the imported WPT tests. Please ensure that any changes on the tests (not coming from a WPT import) are exported to WPT. Please see https://trac.webkit.org/wiki/WPTExportProcess
Created attachment 424659 [details] Patch
Created attachment 424662 [details] Patch
Committed r275269: <https://commits.webkit.org/r275269> All reviewed patches have been landed. Closing bug and clearing flags on attachment 424662 [details].
<rdar://problem/76039359>