cc: Stop warning about virtual+override until we can remove the virtuals

cc: Stop warning about virtual+override until we can remove the virtuals

This is making people ignore other presubmit warnings in all the noise.

R=ajuma, enne, vmpstr

Committed: https://crrev.com/4bef9dd91fa3cbb3cf08386e215b4746eab60a05
Cr-Commit-Position: refs/heads/master@{#299132}

[vmpstr, 2014-10-10 15:38:05]

lgtm, please file a bug to undo this as well so it doesn't get lost.

[danakj, 2014-10-10 16:12:30]

Thanks done, and added it to the comment.

[danakj, 2014-10-10 16:12:30]

The CQ bit was checked by danakj@chromium.org

[commit-bot: I haz the power, 2014-10-10 16:13:25]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/639183005/50001

[commit-bot: I haz the power, 2014-10-10 17:18:44]

Committed patchset #2 (id:50001)

[commit-bot: I haz the power, 2014-10-10 17:19:15]

Patchset 2 (id:??) landed as
https://crrev.com/4bef9dd91fa3cbb3cf08386e215b4746eab60a05
Cr-Commit-Position: refs/heads/master@{#299132}