Revert "Disable PopupBlockerBrowserTest.CtrlEnterKey"

Revert "Disable PopupBlockerBrowserTest.CtrlEnterKey"

We can rever it due to fixed Ctrl-Enter Key issue.

> Disable PopupBlockerBrowserTest.CtrlEnterKey
>
> Failing due to Blink r189541 which can't just be reverted. Disable this
> test while investigating the Blink r198541 failure. Landing to progress
> the Blink roll.
>
> TBR=jochen@chromum.org
> NOTREECHECK=true
> NOTRY=true
> BUG=455691
BUG=455691
R=jochen@chromum.org

Committed: https://crrev.com/181fd72851b24e9dd6005dd1784b95792d3e514f
Cr-Commit-Position: refs/heads/master@{#315758}

[Miyoung Shin, 2015-02-09 11:58:45]

jochen@, 
We can revert this after landing https://crrev.com/910693004/ that need your
review.

[Miyoung Shin, 2015-02-10 04:34:02]

myid.shin@samsung.com changed reviewers:
+ jochen@chromium.org
- jochen@chromum.org

[jochen (gone - plz use gerrit), 2015-02-10 10:37:59]

lgtm

[Miyoung Shin, 2015-02-11 14:17:16]

The CQ bit was checked by myid.shin@samsung.com

[commit-bot: I haz the power, 2015-02-11 14:18:25]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/900893003/1

[commit-bot: I haz the power, 2015-02-11 14:47:35]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-02-11 14:48:13]

Patchset 1 (id:??) landed as
https://crrev.com/181fd72851b24e9dd6005dd1784b95792d3e514f
Cr-Commit-Position: refs/heads/master@{#315758}