If they were null, then the Parcelable would fail to work.
Bug: 126726802
Test: manual
Change-Id: I7929ffa2f20e5de1c8e68e8263cca99496e9d014
Exempt-From-Owner-Approval: Trivial API annotations
Add signaling methods and data pipes for handling real-time text during
a call.
Change-Id: I876827c448252c5f786d7a4919c47891acb03877
Test: manual, through telecom testapps