Merge "Add extra key to StreamingCall." into udc-dev am: 6bbc974a am:...

Merge "Add extra key to StreamingCall." into udc-dev am: 6bbc974a am: 36881780 am: d6466b83 am: 0cb3fbde

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22912877



Change-Id: I0aa567ccf81ad23e0a60f16267c0b12c45660f56
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>