Speculative crash fix.
Speculative crash fix.

While investigating another bug, I tried changing the PostTask(CloseNow)
to a PostDelayedTask(CloseNow) in WidgetWin.  This exposed a crash in the
cookie prompt if I clicked the Allow or Block buttons more than once.

R=sky
BUG=none
TEST=none

Review URL: http://codereview.chromium.org/650067

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@39519 0039d316-1c4b-4281-b951-d872f2087c98

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