HardwareBuffer API cleanups am: 8d49e953eb

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2333066

Change-Id: Ia53d6944fd17274d74d2e70fa3b10289aea36e5d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>