Revert of plugins/update-widgets-crash.html victim element goes missing

Revert of plugins/update-widgets-crash.html victim element goes missing (patchset #1 id:1 of https://codereview.chromium.org/1122483002/)

Reason for revert:
Didn't quite fix the issue: same failure appeared on the build bots.  Reverting here to fix via TestExpectations instead.

Original issue's description:
> plugins/update-widgets-crash.html victim element goes missing
> 
> The victim element to be removed is non-existant sometimes after the bugs
> listed resolved. Workaround for now, by testing that the "victim" element
> exists to avoid an exception, which causes extra test console output, and
> fails the test. See issue 476590 #46 for a bot failure example.
> 
> TBR=haraken@chromium.org
> BUG=457054, 476590
> NOTRY=true
> 
> Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=194807

TBR=haraken@chromium.org,bbudge@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=457054, 476590
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=194809

[Noel Gordon, 2015-05-01 15:21:03]

Created Revert of plugins/update-widgets-crash.html victim element goes missing

[commit-bot: I haz the power, 2015-05-01 15:21:10]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1120963002/1

[commit-bot: I haz the power, 2015-05-01 15:21:39]

Committed patchset #1 (id:1) as
https://src.chromium.org/viewvc/blink?view=rev&revision=194809

[haraken, 2015-05-01 15:28:17]

LGTM