Rebaseline fast/events/constructors/progress-event-constructor.html after VS2013 switch

This is one noted in the bug as potentially interesting.

It looks like a progression to me as on Windows we go from FAIL->PASS,
and can remove the platform-specific baselines.

R=dpranke@chromium.org
BUG=348800

Review URL: https://codereview.chromium.org/177353008

git-svn-id: svn://svn.chromium.org/blink/trunk@168401 bbb929c8-8fbe-4397-9dbb-9b2b20218538