tree ff418bbaa504196ec40f133a6632f6afbeb8d44e
parent 9caec7855727db80524ca759dcd24fe75acc64f9
author Hall Liu <hallliu@google.com> 1600481013 -0700
committer Hall Liu <hallliu@google.com> 1603390709 +0000

Expose and update the call forward/waiting APIs

Expose the call forwarding and call waiting APIs, update their
documentation, and convert them to async APIs due to their dependence on
network communication.

Fixes: 168655869
Test: atest android.telephony.cts.TelephonyManagerTest
Change-Id: Ic20bc99314c8538a3f75f6af9c37bc4d30781825
Merged-In: Ic20bc99314c8538a3f75f6af9c37bc4d30781825