Add click logging for Smartspace media recommendation card.

This change is originally added in ag/14271917, but accidentally removed by ag/14188374 for a merge conflict > <.

Test: statsd_testdrive output https://paste.googleplex.com/5438521440468992
Bug: 181364757
Change-Id: Ic848fe38afef252595ac2f17841e663cd634a33d