Prevent wrong content type for CSS files

The mime-util library contains two content type mappings for .css
files: application/x-pointplus and text/css.  Unfortunately, using
the wrong one will result in most browsers discarding the file as
a CSS file.  Ensure we only use the correct type for CSS files.

This happens because MimeUtilFileTypeRegistry attempts to get all
MIME types from mime-util and then sort the result based on the
specificity of each type.  Since both types have no magic string,
only the ExtensionMimeDetector matches.

Change-Id: Idfe88dc823f191d9c9e0b9c9da3b5d2ec471f9db
1 file changed