Ensure that the allow on all urls checkbox shows up in chrome:extensions

Ensure that the allow on all urls checkbox shows up in chrome:extensions

Previously, if you allowed an extension on all urls, the checkbox disappeared,
which was obviously very bad.  Fix it.

BUG=402958
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=289336

[not at google - send to devlin, 2014-08-12 18:11:30]

lgtm

[Devlin, 2014-08-12 18:12:25]

The CQ bit was checked by rdevlin.cronin@chromium.org

[commit-bot: I haz the power, 2014-08-12 18:13:45]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/rdevlin.cronin@chromium.org/463983002/1

[commit-bot: I haz the power, 2014-08-13 00:55:50]

FYI, CQ is re-trying this CL (attempt #1).
The failing builders are:
  win_chromium_x64_rel on tryserver.chromium.win
(http://build.chromium.org/p/tryserver.chromium.win/builders/win_chromium_x64_...)

[commit-bot: I haz the power, 2014-08-13 03:55:13]

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

[commit-bot: I haz the power, 2014-08-13 03:55:14]

Try jobs failed on following builders:
  win_chromium_x64_rel on tryserver.chromium.win
(http://build.chromium.org/p/tryserver.chromium.win/builders/win_chromium_x64_...)

[Devlin, 2014-08-13 15:22:28]

The CQ bit was checked by rdevlin.cronin@chromium.org

[commit-bot: I haz the power, 2014-08-13 15:23:08]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/rdevlin.cronin@chromium.org/463983002/1

[Devlin, 2014-08-13 17:37:33]

The CQ bit was checked by rdevlin.cronin@chromium.org

[commit-bot: I haz the power, 2014-08-13 17:38:33]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/rdevlin.cronin@chromium.org/463983002/1

[commit-bot: I haz the power, 2014-08-13 18:58:35]

Committed patchset #1 (1) as 289336