[CSSRegions] Constrain auto-height region computation in a different way

[CSSRegions] Constrain auto-height region computation in a different way

Since the region is a render block, we can use RenderBox::constrainContentBoxLogicalHeightByMinMax
instead of RenderBox::computeReplacedLogicalHeightRespectingMinMaxHeight to better reflect the fact
that the region is not a replaced element.
Covered by existing regions tests, since when replaced-based the region had an intrinsic height of 0 and now, block-based,
it does not have any children.

BUG=243651
NOTRY=true

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=151442

[eseidel, 2013-05-28 20:10:06]

eae and levi are the best reviewers for anyting subpixel related.

[eseidel, 2013-05-28 20:10:26]

Bah.  Sorry.  commented on teh wrong bug.  but this lgtm too.

[eseidel, 2013-05-28 20:10:31]

lgtm

[commit-bot: I haz the power, 2013-05-28 20:10:37]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/mihnea@adobe.com/16033003/1

[commit-bot: I haz the power, 2013-05-28 21:01:56]

Retried try job too often on linux_layout_rel for step(s) webkit_tests
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=linux_layo...

[commit-bot: I haz the power, 2013-05-29 18:00:59]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/mihnea@adobe.com/16033003/1

[commit-bot: I haz the power, 2013-05-29 18:30:41]

Retried try job too often on linux_layout_rel for step(s) webkit_tests
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=linux_layo...

[commit-bot: I haz the power, 2013-05-30 05:27:21]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/mihnea@adobe.com/16033003/1

[commit-bot: I haz the power, 2013-05-30 05:27:43]

Change committed as 151442