[css-grid] Refactor the extent for baseline alignment computation

[css-grid] Refactor the extent for baseline alignment computation

Title says it all, we were doing basically the same in two different methods
of the track sizing algorithm. We use an optional as return value to tell
the caller whether baseline alignment applies or not.

Review-Url: https://codereview.chromium.org/2852283002
Cr-Commit-Position: refs/heads/master@{#468653}
Committed: https://chromium.googlesource.com/chromium/src/+/73c6ed6036451a31ef2b47d12ece1ee652c1c6d6

[svillar, 2017-05-02 09:36:32]

svillar@igalia.com changed reviewers:
+ jfernandez@igalia.com, rego@igalia.com

[jfernandez, 2017-05-02 14:23:37]

lgtm

[svillar, 2017-05-02 14:28:05]

The CQ bit was checked by svillar@igalia.com

[commit-bot: I haz the power, 2017-05-02 14:28:20]

CQ is trying da patch.

Follow status at:
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-05-02 16:01:06]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1493735285140340, "parent_rev":
"9d30c08f5979bb312459afee2871e74a5b43d094", "commit_rev":
"73c6ed6036451a31ef2b47d12ece1ee652c1c6d6"}

[commit-bot: I haz the power, 2017-05-02 16:01:17]

Description was changed from

==========
[css-grid] Refactor the extent for baseline alignment computation

Title says it all, we were doing basically the same in two different methods
of the track sizing algorithm. We use an optional as return value to tell
the caller whether baseline alignment applies or not.
==========

to

==========
[css-grid] Refactor the extent for baseline alignment computation

Title says it all, we were doing basically the same in two different methods
of the track sizing algorithm. We use an optional as return value to tell
the caller whether baseline alignment applies or not.

Review-Url: https://codereview.chromium.org/2852283002
Cr-Commit-Position: refs/heads/master@{#468653}
Committed:
https://chromium.googlesource.com/chromium/src/+/73c6ed6036451a31ef2b47d12ece...
==========

[commit-bot: I haz the power, 2017-05-02 16:01:18]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/73c6ed6036451a31ef2b47d12ece...