Revert of Temporarily adding timers to one WebRTC browsertest.

Revert of Temporarily adding timers to one WebRTC browsertest. (https://codereview.chromium.org/371013002/)

Reason for revert:
Broke content_browsertests on win7: https://build.chromium.org/p/chromium.webkit/builders/Win7%20(dbg)/builds/14477/steps/content_browsertests/logs/stdio

Original issue's description:
> Temporarily adding timers to one WebRTC browsertest.
> 
> Perhaps then we can see where it gets stuck or slowed down on Android
> bots.
> 
> BUG=387895
> NOTRY=true
> 
> Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=281518

TBR=tommi@chromium.org,phoglund@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=387895
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=281597

[eseidel, 2014-07-07 22:04:49]

Created Revert of Temporarily adding timers to one WebRTC browsertest.

[commit-bot: I haz the power, 2014-07-07 22:06:09]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/eseidel@chromium.org/377763002/1

[commit-bot: I haz the power, 2014-07-07 22:07:40]

Change committed as 281597