As discussed in bug 110777, in order to support spanning and to properly parse the shorthands grid-{row|column}. We need to support and switch our internal representation to using grid-{start|end} instead of the current design which is based on grid-{row|column}.
Created attachment 190541 [details] Proposed implementation 1: Added the properties and refactored the internal to be aligned with grid-{start|end}.
Comment on attachment 190541 [details] Proposed implementation 1: Added the properties and refactored the internal to be aligned with grid-{start|end}. Attachment 190541 [details] did not pass chromium-ews (chromium-xvfb): Output: http://webkit-commit-queue.appspot.com/results/16675178 New failing tests: svg/css/getComputedStyle-basic.xhtml fast/css/getComputedStyle/computed-style.html fast/css/getComputedStyle/computed-style-without-renderer.html
Created attachment 190562 [details] Proposed implementation 2: Same as 1, without the wrong test rebaselines.
Comment on attachment 190562 [details] Proposed implementation 2: Same as 1, without the wrong test rebaselines. Clearing flags on attachment: 190562 Committed r144681: <http://trac.webkit.org/changeset/144681>
All reviewed patches have been landed. Closing bug.