replace OVERRIDE and FINAL with override and final in athena/

replace OVERRIDE and FINAL with override and final in athena/

BUG=417463
Committed: https://crrev.com/ed6dc77f0477ac378a7a2a655464f254338cbad5
Cr-Commit-Position: refs/heads/master@{#298050}

[Mostyn Bramley-Moore, 2014-10-03 12:51:50]

mostynb@opera.com changed reviewers:
+ dcheng@chromium.org, sky@chromium.org

[Mostyn Bramley-Moore, 2014-10-03 12:52:04]

@sky: can you give this a thumbs-up?

The script I used to make this change is mentioned in the comments over here:
https://codereview.chromium.org/614103004/

[sky, 2014-10-03 15:21:37]

sky@chromium.org changed reviewers:
+ oshima@chromium.org
- sky@chromium.org

[sky, 2014-10-03 15:21:46]

sky->oshima

[oshima, 2014-10-03 16:28:06]

lgtm

[Mostyn Bramley-Moore, 2014-10-03 16:41:34]

The CQ bit was checked by mostynb@opera.com

[commit-bot: I haz the power, 2014-10-03 16:42:38]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/623103002/20001

[commit-bot: I haz the power, 2014-10-03 17:09:54]

Committed patchset #2 (id:20001) as b21bbaf0276109f6a94b13134b34ba7d0d5c8330

[commit-bot: I haz the power, 2014-10-03 17:10:35]

Patchset 2 (id:??) landed as
https://crrev.com/ed6dc77f0477ac378a7a2a655464f254338cbad5
Cr-Commit-Position: refs/heads/master@{#298050}