Update GLBench references for arrow.

TEST=Checked using Beyond Compare that png's are sufficiently close.
BUG=None.

Change-Id: I534c6ca4ba7181732c11afc97b5da3af8b5252cb
Reviewed-on: https://gerrit.chromium.org/gerrit/41775
Commit-Queue: Ilja H. Friedel <ihf@chromium.org>
Tested-by: Ilja H. Friedel <ihf@chromium.org>
Reviewed-by: Stuart Abercrombie <sabercrombie@chromium.org>
4 files changed
tree: 2a939fb76770f7c693054b2e82b3824a16b03e33
  1. README
  2. glbench_knownbad_images/
  3. glbench_reference_images/