[layoutng] Set the intrinsic content logical height on the old layout tree

The overflow size is the content size without being affected by width/height
and max/min properties, so it's exactly what we need here.

This is important because without this change, there are DCHECK failures
if we're a child of a flexbox as the size remains at -1.

R=eae@chromium.org,ikilpatrick@chromium.org,glebl@chromium.org
BUG=635619

Review-Url: https://codereview.chromium.org/2337763005
Cr-Commit-Position: refs/heads/master@{#418695}
1 file changed