tree f8f692f25842024a67ab6ef94b58c7511abea838
parent 7fff7e5eff2640fac3729ff4f955f8e37cebf75f
author Malcolm Chen <refuhoo@google.com> 1537844492 -0700
committer Malcolm Chen <refuhoo@google.com> 1540241469 -0700

Add PhoneStateListener#onPreferredDataSubIdChanged

When SubscriptionManager#SetPreferredData changes preferredDataSub,
SubscriptionController notifies TelephonyRegistry and then notifies
all PhoneStateListeners that listen to the event.

Bug: 115550764
Test: unittest
Change-Id: Icb0b349b9f07a52d7d9c5e8512f731986f1a1fa3
Merged-In: Icb0b349b9f07a52d7d9c5e8512f731986f1a1fa3