0. Enable tiled drawing
1. Search for "w-4" on Google
2. Click the first result, which should be a link to a W-4 PDF
When the PDF loads, a cross-fade happens between the Google search results page. This looks kind of nice, but I don't think it's intentional.
Created attachment 131932 [details]
Created attachment 131937 [details]
Committed r110780: <http://trac.webkit.org/changeset/110780>