Merge "Log number of conference child calls" into ub-contactsdialer-a-dev am: 6db499fd7b
am: 0781936537

* commit '0781936537e09c26651a0f20acadcd75d57bc7b7':
  Log number of conference child calls
tree: 76871f04561ac70e899e471d49573ab95278e650
  1. InCallUI/