Temporarily disable some extensions management tests in official builds

Temporarily disable some extensions management tests in official builds

These are failing on the official builders. A fix for that is out for
review, but in the mean time this disables those tests to get the bots
green.

BUG=567497
TBR=rockot@chromium.org

Committed: https://crrev.com/75d5990c0a0b1fa3bba1c50c28c2fa34654c71b0
Cr-Commit-Position: refs/heads/master@{#364431}

[asargent_no_longer_on_chrome, 2015-12-10 18:04:33]

The CQ bit was checked by asargent@chromium.org

[commit-bot: I haz the power, 2015-12-10 18:06:20]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1513573008/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1513573008/20001

[commit-bot: I haz the power, 2015-12-10 19:43:16]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-12-10 19:44:13]

Description was changed from

==========
Temporarily disable some extensions management tests in official builds

These are failing on the official builders. A fix for that is out for
review, but in the mean time this disables those tests to get the bots
green.

BUG=567497
TBR=rockot@chromium.org
==========

to

==========
Temporarily disable some extensions management tests in official builds

These are failing on the official builders. A fix for that is out for
review, but in the mean time this disables those tests to get the bots
green.

BUG=567497
TBR=rockot@chromium.org

Committed: https://crrev.com/75d5990c0a0b1fa3bba1c50c28c2fa34654c71b0
Cr-Commit-Position: refs/heads/master@{#364431}
==========

[commit-bot: I haz the power, 2015-12-10 19:44:14]

Patchset 2 (id:??) landed as
https://crrev.com/75d5990c0a0b1fa3bba1c50c28c2fa34654c71b0
Cr-Commit-Position: refs/heads/master@{#364431}