Unreviewed, rolling out r147263.
http://trac.webkit.org/changeset/147263
https://bugs.webkit.org/show_bug.cgi?id=113632

Breaks test fast/loader/display-image-unset-allows-cached-
image-load.html (Requested by mlam on #webkit).

Patch by Sheriff Bot <webkit.review.bot@gmail.com> on 2013-03-29

* loader/cache/CachedResource.cpp:
(WebCore::CachedResource::freshnessLifetime):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@147267 268f45cc-cd09-0410-ab3c-d52691b4dbfc