[automerger skipped] GpuStats: refactor single stats pieces into a uniform way
am: 65a1504e80 -s ours
am skip reason: change_id I2907065a55d03a6c1494737e6f0a77f6e94272eb with SHA1 b1c1a377a8 is in history

Change-Id: I68e577b897c0c744aa9df7d9ffe5d9dbd9f2015b