Enable extension browser tests on debug windows.

Enable extension browser tests on debug windows.

BUG=177163
Committed: https://crrev.com/121cbb5f7fce9719ab6152cb2e059575df8139d6
Cr-Commit-Position: refs/heads/master@{#329495}

[hubbe, 2015-05-12 17:13:43]

The CQ bit was checked by hubbe@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2015-05-12 17:14:10]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1128253005/1

[commit-bot: I haz the power, 2015-05-12 17:57:26]

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

[commit-bot: I haz the power, 2015-05-12 17:57:26]

Dry run: This issue passed the CQ dry run.

[hubbe, 2015-05-12 18:00:43]

hubbe@chromium.org changed reviewers:
+ asargent@chromium.org

[asargent_no_longer_on_chrome, 2015-05-12 19:43:33]

lgtm

[hubbe, 2015-05-12 20:41:11]

The CQ bit was checked by hubbe@chromium.org

[commit-bot: I haz the power, 2015-05-12 20:42:42]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1128253005/1

[commit-bot: I haz the power, 2015-05-12 21:30:33]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-05-12 21:31:30]

Patchset 1 (id:??) landed as
https://crrev.com/121cbb5f7fce9719ab6152cb2e059575df8139d6
Cr-Commit-Position: refs/heads/master@{#329495}

[sergeyv, 2015-05-13 12:55:59]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/1134333003/ by sergeyv@chromium.org.

The reason for reverting is:  GcdPrivateAPITest.WifiPasswords fails after this
patch.

Failure example: 
http://build.chromium.org/p/chromium.win/buildstatus?builder=Win7%20Tests%20%....