Merge "Call streaming implementation cleanups." into udc-dev am: c7cae571...

Merge "Call streaming implementation cleanups." into udc-dev am: c7cae571 am: 7039ff8a am: d57c26e6 am: daaf40fd

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/services/Telecomm/+/22912703



Change-Id: Id07e5aceb38c13efe4db77c18c450293d83bdd7c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>