Merge "SonivoxTest: Use MediaPreparer to download test files" into main am: 5e9ae01ee1 am: 40c2ce9eb4 am: 1570e53606 am: 8edbdb706e am: 1478f9b3a6

Original change: https://android-review.googlesource.com/c/platform/external/sonivox/+/2773024

Change-Id: Ib69763e6ea55bd462e23e0d2ee43fa57bb349740
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>