Updated mediawiki/extensions
Project: mediawiki/extensions/E3Experiments  acc150e9fc8da51fc29b3c431d043ac58a6d7105

Remove e3.clickTrack() and e3.isUserAnonymous()

e3.clickTrack() was a wrapper for ClickTracking API call,
e3.isUserAnonymous() did the same as mw.user.isAnon().
They have no callers in 1.21wmf9 and above.

Change-Id: I3ab683ef8cda18183a7992711ab836a4bcc77c14