fixup! cc: Handle overflow/underflow in MathUtil::RoundUp/RoundDown

fixup! cc: Handle overflow/underflow in MathUtil::RoundUp/RoundDown
functions.

Simple grammatical correction in function names of RoundUpOverflow
and RoundDownUnderflow.
CQ_INCLUDE_TRYBOTS=tryserver.blink:linux_blink_rel

Committed: https://crrev.com/46870db8aa58a80d547ea204a5675fb862066620
Cr-Commit-Position: refs/heads/master@{#342788}

[prashant.n, 2015-08-10 15:08:12]

prashant.n@samsung.com changed reviewers:
+ vmpstr@chromium.org

[prashant.n, 2015-08-10 15:08:12]

PTAL.

[vmpstr, 2015-08-10 17:21:14]

lgtm

[prashant.n, 2015-08-11 04:34:04]

The CQ bit was checked by prashant.n@samsung.com

[commit-bot: I haz the power, 2015-08-11 04:34:10]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1286463003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1286463003/1

[commit-bot: I haz the power, 2015-08-11 05:13:00]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-08-11 05:13:42]

Patchset 1 (id:??) landed as
https://crrev.com/46870db8aa58a80d547ea204a5675fb862066620
Cr-Commit-Position: refs/heads/master@{#342788}