tree d0171abc9b127ba6639b169933b1d7ebfe720d8d
parent a0c6881ad75267773683f41bbc76506e7d90d0fd
author Grace Jia <xiaotonj@google.com> 1576879080 -0800
committer Grace Jia <xiaotonj@google.com> 1578534281 -0800

Prevent video calls that down graded to audio calls from merging to
conference call.

Test: TelephonyUnitTest
Bug: 143585631
Change-Id: I7414753fcbf78ad0d0cecf15067fe1d02db04214