Only enable OneClickSigninHelper for web-based signin

Only enable OneClickSigninHelper for web-based signin

BUG=

Committed: https://crrev.com/639bf9ee3ad459bd0a6623edb1f816eaebf4d120
Cr-Commit-Position: refs/heads/master@{#302337}

[guohui, 2014-10-30 17:41:45]

guohui@chromium.org changed reviewers:
+ rogerta@chromium.org

[guohui, 2014-10-30 17:41:46]

Hey,

could you please review the CL?

Thanks,

Hui

[guohui, 2014-10-30 17:42:13]

guohui@chromium.org changed reviewers:
+ sky@chromium.org

[guohui, 2014-10-30 17:42:23]

On 2014/10/30 17:41:46, guohui wrote:
> Hey,
> 
> could you please review the CL?
> 
> Thanks,
> 
> Hui

+sky@ for owner review.

[sky, 2014-10-30 21:05:36]

LGTM

[Roger Tawa OOO till Jul 10th, 2014-10-31 20:41:34]

lgtm

[guohui, 2014-10-31 20:41:42]

The CQ bit was checked by guohui@chromium.org

[commit-bot: I haz the power, 2014-10-31 20:43:45]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/669783003/1

[commit-bot: I haz the power, 2014-10-31 22:19:58]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-10-31 22:21:20]

Patchset 1 (id:??) landed as
https://crrev.com/639bf9ee3ad459bd0a6623edb1f816eaebf4d120
Cr-Commit-Position: refs/heads/master@{#302337}