Correctly account for nested multicol top border / padding.

Correctly account for nested multicol top border / padding.

Top border and padding will be baked into the first LayoutColumnSet object of a
multicol container, but not until the column set is laid out. Since column sets
are laid out after flow threads, use a more reliable way to include top border
and padding.

BUG=552615
Committed: https://crrev.com/0441243b0f371f2d98134a070ada9b149d95f32e
Cr-Commit-Position: refs/heads/master@{#386213}

[mstensho (USE GERRIT), 2016-04-08 08:10:49]

mstensho@opera.com changed reviewers:
+ leviw@chromium.org

[mstensho (USE GERRIT), 2016-04-08 08:10:50]

LayoutColumnSet is probably the nastiest thing about the multicol
implementation. :(

[leviw_travelin_and_unemployed, 2016-04-08 20:37:15]

The CQ bit was checked by leviw@chromium.org

[leviw_travelin_and_unemployed, 2016-04-08 20:37:16]

lgtm

[commit-bot: I haz the power, 2016-04-08 20:37:34]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1863413002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1863413002/1

[commit-bot: I haz the power, 2016-04-08 21:54:01]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-04-08 21:55:15]

Description was changed from

==========
Correctly account for nested multicol top border / padding.

Top border and padding will be baked into the first LayoutColumnSet object of a
multicol container, but not until the column set is laid out. Since column sets
are laid out after flow threads, use a more reliable way to include top border
and padding.

BUG=552615
==========

to

==========
Correctly account for nested multicol top border / padding.

Top border and padding will be baked into the first LayoutColumnSet object of a
multicol container, but not until the column set is laid out. Since column sets
are laid out after flow threads, use a more reliable way to include top border
and padding.

BUG=552615

Committed: https://crrev.com/0441243b0f371f2d98134a070ada9b149d95f32e
Cr-Commit-Position: refs/heads/master@{#386213}
==========

[commit-bot: I haz the power, 2016-04-08 21:55:16]

Patchset 1 (id:??) landed as
https://crrev.com/0441243b0f371f2d98134a070ada9b149d95f32e
Cr-Commit-Position: refs/heads/master@{#386213}