Update barbet SVN to 51 am: a3ff25068d

Original change: https://googleplex-android-review.googlesource.com/c/device/google/barbet/+/25291300

Change-Id: Ic29af371008a337e6b5633ac671c7792ba0f659d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>