Add parse-ext content-types so that unit tests pass.
Add parse-ext content-types so that unit tests pass.


git-svn-id: 9ccbd9d86b746f4b66ec41278f73faea0938905b@306808 13f79535-47bb-0310-9956-ffa450edef68

commoncrawl/nutch,commoncrawl/nutch,commoncrawl/nutch,commoncrawl/nutch