By default, HTML files are imported by Tools/Scripts/import-w3c-tests if they are either ref tests or js tests. HTML files within "resources" folders are generally not ref tests or js tests. But they should be imported anyway as they may be used by ref/js tests.
Created attachment 222087 [details] Patch
Comment on attachment 222087 [details] Patch Clearing flags on attachment: 222087 Committed r173841: <http://trac.webkit.org/changeset/173841>
All reviewed patches have been landed. Closing bug.