commit ee9219e2ac383a0f44fb7b40dac2b6d10a491935
author glebl <glebl@chromium.org> Fri Nov 04 03:00:33 2016
committer Commit bot <commit-bot@chromium.org> Fri Nov 04 03:03:54 2016
tree f80f50f4c2e21c0051c46f64745678e5edd30440
parent aeb8129a0f5c3829193312fed52595ffde9b7c8a

Add support of optional leader_point in NGLayoutOpportunityIterator

Leader point together with origin_point creates a temporary exclusion that should be avoided in the layout opportunity iterator.

This patch is based on the already reviewed, submitted, reverted patch http://crrev.com/2472583006 with the only difference that it uses WTF::Optional for NGLayoutOpportunityIterator's optional parameters.

BUG=635619

Review-Url: https://codereview.chromium.org/2477913002
Cr-Commit-Position: refs/heads/master@{#429775}