Merge "[RCS]Implement File Upload" am: f8f0e5d0b9 am: 06809ae0e5 am: ae2e72527c

Original change: https://android-review.googlesource.com/c/platform/packages/services/Telephony/+/1647006

Change-Id: Iaf6fa2b3047aa738f52e41fed874d6293a1c177e