w3c/web-platform-tests — pull request #443 by rniwa (2013-11-22 06:18:20+00:00)
Title: Use .html extension instead of .xht extension inside html-templates/additions-to-the-css-user-agent-style-sheet

since they're not valid XHTML documents (e.g. missing html element) and need to be parsed as HTML documents.

This is preventing us (WebKit) from importing these 3 tests.