Merge "binderLibTest: filling buffer" am: 184a9c7331

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/2151721

Change-Id: I9b09e62cd03f744420bb41e6cd7a70738803fa2b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>