Replace OVERRIDE with its C++11 counterparts in src/sql

Replace OVERRIDE with its C++11 counterparts in src/sql

This step is a complete search for OVERRIDE to
replace it with its lowercase versions.

BUG=417463
Committed: https://crrev.com/3a4c5c75a03b01316587f72517b9f676e766e383
Cr-Commit-Position: refs/heads/master@{#299655}

[RAGHURAM, 2014-10-09 08:06:26]

r.nagaraj@samsung.com changed reviewers:
+ gbillock@chromium.org

[RAGHURAM, 2014-10-09 08:07:06]

Please Review.

Thanks & Regards

[RAGHURAM, 2014-10-09 11:47:21]

r.nagaraj@samsung.com changed reviewers:
+ erikwright@chromium.org

[RAGHURAM, 2014-10-13 12:16:02]

r.nagaraj@samsung.com changed reviewers:
+ shess@chromium.org

[erikwright (departed), 2014-10-14 14:20:45]

On 2014/10/09 08:07:06, RAGHURAM wrote:
> Please Review.
> 
> Thanks & Regards

LGTM.

[RAGHURAM, 2014-10-15 05:43:18]

The CQ bit was checked by r.nagaraj@samsung.com

[commit-bot: I haz the power, 2014-10-15 05:44:16]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/639753004/1

[commit-bot: I haz the power, 2014-10-15 06:16:28]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-10-15 06:18:54]

Patchset 1 (id:??) landed as
https://crrev.com/3a4c5c75a03b01316587f72517b9f676e766e383
Cr-Commit-Position: refs/heads/master@{#299655}