[css-grid] Refactor information stored related to column positions
Created attachment 278079 [details] Patch
This comes from 2 patches in Blink: * https://codereview.chromium.org/1915903002/ * https://codereview.chromium.org/1945203002/
Comment on attachment 278079 [details] Patch Clearing flags on attachment: 278079 Committed r200427: <http://trac.webkit.org/changeset/200427>
All reviewed patches have been landed. Closing bug.