Merge "Satellite demo mode : Simulated sending and receiving" into udc-dev am: c858b2c611 am: 902ae6212c

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22845479

Change-Id: I862649f23c38ba623b9c21ae35c9d98f1b3dc7d4
Signed-off-by: Automerger Merge Worker <[email protected]>