I made a completely wrong change in http://trac.webkit.org/changeset/165896, trying to maintain Safari's black PDF background but swap to white if the PDF was empty to avoid an all-black view; but, we shouldn't be forcing a background color, as some (all?) clients don't use a black background. Remove that code.
Created attachment 239193 [details]
Created attachment 239194
Comment on attachment 239193 [details]