Incorrect Static Position of Absolute Positioned Elements inside Rel-Positioned Containers

Incorrect Static Position of Absolute Positioned Elements inside Rel-Positioned Containers

Per http://www.w3.org/TR/CSS2/visudet.html#abs-non-replaced-width if an
absolute positioned box's 'left' and 'right' values are both auto then it
should position itself as though it is a normal flow box in relation to its
containing block. Where the positioned box's container is a rel-positioned
inline we should disregard any offset created by that inline when
positioning the positioned box's layer.

This bug was spotted during a discussion at
http://lists.w3.org/Archives/Public/www-style/2014Jul/0549.html. The tests
are drawn from that discussion and attributed appropriately.

BUG=398164
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=180488

[leviw_travelin_and_unemployed, 2014-08-18 19:15:36]

Took me a bit to reason around this, but lgtm!

[rhogan, 2014-08-18 19:33:30]

The CQ bit was checked by robhogan@gmail.com

[commit-bot: I haz the power, 2014-08-18 19:34:28]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/robhogan@gmail.com/423173003/20001

[commit-bot: I haz the power, 2014-08-18 19:39:08]

Committed patchset #2 (20001) as 180488