Ie, this lady wasn't considered a journalist.
Chen is an employee of a media organization. That the organization has a blog doesn't make it different to, say, AA Gill writing for The Times, which also has a blog. The main difference is The Times is a more recognized media outlet than Gawker media.
Interesting question: what if it were Engadget? AOL is a recognized media name (sad this was used by the judge in his definition). Or Reddit (owned by Conde Nast) started paying people to write about gadgets?