Merge "Add a few tests that FRONT_BUFFER is flushing properly" into tm-dev am: 7c62346fd6 am: a51acf4141

Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/interfaces/+/17507360

Change-Id: Ied603581fa1b4290647625d9e99b8721b42fef3a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>