Revert of Disable another WebView fullscreen video test until we land fullscreen IPC changes

Revert of Disable another WebView fullscreen video test until we land fullscreen IPC changes (https://codereview.chromium.org/371933003/)

Reason for revert:
revert this as all related CLs are committed

Original issue's description:
> Disable another WebView fullscreen video test until we land fullscreen IPC changes
> 
> there are 2 changes needs to be submitted before we reenable the tests:
> 1. https://codereview.chromium.org/290643005/ and
> 2. https://codereview.chromium.org/292573004/
> 
> the blink change will break all the tests, so we need to reenable the test after the chromium change lands
> 
> BUG=367346
> 
> Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=281627

TBR=boliu@chromium.org
BUG=367346
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=282111

[qinmin, 2014-07-09 16:32:51]

Created Revert of Disable another WebView fullscreen video test until we land
fullscreen IPC changes

[boliu, 2014-07-09 16:34:12]

dude you really want this one to sit through cq

[boliu, 2014-07-09 16:34:18]

The CQ bit was unchecked by boliu@chromium.org

[boliu, 2014-07-09 16:34:31]

On 2014/07/09 16:34:12, boliu wrote:
> dude you really want this one to sit through cq

unchecked cq for ya

[qinmin, 2014-07-09 16:46:05]

The CQ bit was checked by qinmin@chromium.org

[commit-bot: I haz the power, 2014-07-09 16:47:32]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/qinmin@chromium.org/382583002/1

[commit-bot: I haz the power, 2014-07-09 20:30:21]

Change committed as 282111