tree 747e60a76678a0b21a85afc26f56f3a50aa34cb6
parent 6632298d0771084277936a4324944ab3b63d9725
author Pengquan Meng <mpq@google.com> 1507583404 -0700
committer Pengquan Meng <mpq@google.com> 1508775956 -0700

Improves service state changed notification

The service of GsmCdmaPhone and ImsPhone are changed independently, but
the service state tracker only notify the service state of
GsmCdmaPhone. This changed make the ServiceStateTracker notify the
merged state of GsmCdmaPhone and ImsPhone even if these two phone change
their service state independently.

Bug: 67471135
Test: manually test and unit test

Change-Id: Iba99fc2b02ae536897d9cde07d81b6ab64b5a9cb