Use the --key and --gitHash flags on nanobench.
Use the --key and --gitHash flags on nanobench.

DO NOT SUBMIT (until nanobench supports these flags.)

BUG=skia:
R=mtklein@google.com, borenet@google.com

Author: jcgregorio@google.com

Review URL: https://codereview.chromium.org/394953006

Tiger66639/skia-buildbot,google/skia-buildbot,Tiger66639/skia-buildbot,google/skia-buildbot,Tiger66639/skia-buildbot,google/skia-buildbot,google/skia-buildbot,Tiger66639/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,Tiger66639/skia-buildbot,Tiger66639/skia-buildbot,google/skia-buildbot,Tiger66639/skia-buildbot