Fix crash when new avatar signin with cross account error

Fix crash when new avatar signin with cross account error

OneClickSigninHelper::HandleCrossAccountError has an input parameter of web contents that may have been killed when the method is called, e.g. signin from the new avatar bubble. Instead this method should just use the current active tab, since it is only used to attach a tab-modal warning dialog.

BUG=388607
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=287973

[guohui, 2014-08-06 18:48:36]

Hey,

could you please review this CL?

Thanks,

Hui

[Roger Tawa OOO till Jul 10th, 2014-08-06 19:11:31]

lgtm

[guohui, 2014-08-06 19:13:59]

The CQ bit was checked by guohui@chromium.org

[commit-bot: I haz the power, 2014-08-06 19:15:23]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/guohui@chromium.org/444083003/20001

[commit-bot: I haz the power, 2014-08-06 22:50:15]

FYI, CQ is re-trying this CL (attempt #1).
The failing builders are:
  win8_chromium_rel on tryserver.chromium.win
(http://build.chromium.org/p/tryserver.chromium.win/builders/win8_chromium_rel...)

[commit-bot: I haz the power, 2014-08-06 22:54:19]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-08-06 22:54:21]

Try jobs failed on following builders:
  win8_chromium_rel on tryserver.chromium.win
(http://build.chromium.org/p/tryserver.chromium.win/builders/win8_chromium_rel...)

[guohui, 2014-08-06 23:24:21]

The CQ bit was checked by guohui@chromium.org

[commit-bot: I haz the power, 2014-08-06 23:27:49]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/guohui@chromium.org/444083003/40001

[commit-bot: I haz the power, 2014-08-07 06:59:52]

Change committed as 287973