Update the string for gaia incognito header

Update the string for gaia incognito header

BUG=375416
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=274030

[guohui, 2014-05-30 18:14:00]

Hey,

could you please take a look at the cl?

Thanks,

Hui

[Roger Tawa OOO till Jul 10th, 2014-05-30 18:24:18]

lgtm

[guohui, 2014-05-30 18:28:00]

The CQ bit was checked by guohui@chromium.org

[commit-bot: I haz the power, 2014-05-30 18:28:48]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/guohui@chromium.org/305103006/20001

[guohui, 2014-05-30 20:20:19]

+noms@ for owner review of chrome/browser/profiles/profile_metrics.cc
+asvitkine@ for owner review of tools/metrics/histograms/histograms.xml

[guohui, 2014-05-30 20:20:24]

The CQ bit was unchecked by guohui@chromium.org

[Alexei Svitkine (slow), 2014-05-30 20:24:52]

Was the old option simply named incorrectly or is it changing in meaning? The
reason I ask is generally for UMA, it's better not to re-use the same enum
values for different options. But if it was simply named incorrectly when it was
originally checked in, then its ok to fix the name.

[noms (inactive), 2014-05-30 20:27:27]

profiles lgtm

[guohui, 2014-05-30 20:46:39]

It was simply named incorrectly.

[Alexei Svitkine (slow), 2014-05-30 20:47:31]

gotcha, LGTM

[guohui, 2014-05-30 20:56:31]

The CQ bit was checked by guohui@chromium.org

[commit-bot: I haz the power, 2014-05-30 20:59:36]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/guohui@chromium.org/305103006/20001

[commit-bot: I haz the power, 2014-05-31 04:56:10]

Change committed as 274030