This is needed if internal component wants to listen to precise call state change. Bug: 117980553 Test: unittest Change-Id: Id5a60519cbf1d724f939fc10b1f03cccfe5c1b5c
This is needed if internal component wants to listen to precise call state change. Bug: 117980553 Test: unittest Change-Id: Id5a60519cbf1d724f939fc10b1f03cccfe5c1b5c