Created attachment 211581 [details] Test In the attached test case, if one slowly resizes the browser window, the green background element is laid out and split continuosly between the 4 regions.
Created attachment 226529 [details] Patch
Wouldn't be better to use checkLayout.js and give up the reference test? Looks like you are testing that the second and the third region have zero height.
Created attachment 227070 [details] Patch
Comment on attachment 227070 [details] Patch r=me
Comment on attachment 227070 [details] Patch Clearing flags on attachment: 227070 Committed r165873: <http://trac.webkit.org/changeset/165873>
All reviewed patches have been landed. Closing bug.