commit ce96e26c277a746aa95774851ad8daf5c8b3c0d1
author Shuo Qian <shuoq@google.com> Wed Jan 22 13:12:08 2020 -0800
committer Shuo Qian <shuoq@google.com> Fri Jan 24 23:56:17 2020 +0000
tree 4623b5877abd1fe81cf5a732feac8144e3230151
parent 466d01d0efdfa894b365ae00da9333b3d68f8475

Support Call Forwarding and Call Waiting APIs for voice call.

Allows system apps to get/set call forwarding configuration including
 reason, status, number and timeout.

Allows system apps to get/set the status for call waiting function;
Call waiting function enables the waiting for the incoming call when
 it reaches the user who is busy to make another call and allows users
 to decide whether to switch to the incoming call.

Test: Cts; Treehugger; https://paste.googleplex.com/5810435984982016
Bug: 147920077
Change-Id: Iadeea607749c67209df8cb1313f8b134df0a5c4a