Nope, it's not, because it persists between clean Windows installs. In fact, using the chrome://sync-internals/ from the sibling comment, I can see a "Click&Clean App" in my Apps (not Extensions!), which has id "pdabfienifkbhoihedcgeogidfmibmhp" which id, if you open it in Google Store, leads to [0], which is a page for the Privacy Test extension. And I can't delete it from my profile, because Chrome let's you manage only Extensions, not Apps!

[0] https://chrome.google.com/webstore/detail/privacy-test/pdabf...