Updated mediawiki/extensions
Project: mediawiki/extensions/MultimediaViewer  7161ac3cc452e8d3ed665a1cd449422cce6995fe

Record sampling factor in EventLogging calls.

Change-Id: I3966bf5dfe9ed607bda8e87f3b1924de37716dcf
Mingle: https://wikimedia.mingle.thoughtworks.com/projects/multimedia/cards/619