Return ints from border{Before,After,Start,End}Width

Return ints from border{Before,After,Start,End}Width

The users of these functions in LayoutBoxModelObject already returns
ints and the functions they wrap also returns int.

BUG=496033
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=197161

[davve, 2015-06-15 14:23:43]

The CQ bit was checked by davve@opera.com to run a CQ dry run

[commit-bot: I haz the power, 2015-06-15 14:23:54]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1183163002/1

[commit-bot: I haz the power, 2015-06-15 15:30:41]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-06-15 15:30:42]

Dry run: This issue passed the CQ dry run.

[davve, 2015-06-15 16:09:18]

davve@opera.com changed reviewers:
+ mstensho@opera.com

[davve, 2015-06-15 16:09:19]

One more int thing that was close by. PTAL.

[mstensho (USE GERRIT), 2015-06-16 07:04:37]

The CQ bit was checked by mstensho@opera.com

[mstensho (USE GERRIT), 2015-06-16 07:04:37]

lgtm

[commit-bot: I haz the power, 2015-06-16 07:04:42]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1183163002/1

[commit-bot: I haz the power, 2015-06-16 07:08:03]

Committed patchset #1 (id:1) as
https://src.chromium.org/viewvc/blink?view=rev&revision=197161