Try 1 at rebaseline

Try 1 at rebaseline

BUG=skia:

Committed: https://skia.googlesource.com/skia/+/b6f431612fb6bcf86217f9136846b00ab57efa5c

[kelvinly, 2014-06-10 19:53:58]

Using two standard deviations from the average for expectations

[benchen, 2014-06-10 19:59:23]

LGTM. Be prepared to make many iterations from here. Thanks!
You may use the rebase.py tool under experimental/benchtools to apply and test
new ranges.
https://sites.google.com/site/skiadocs/developer-documentation/tree-sheriff#b...

https://codereview.chromium.org/324083007/diff/1/bench/gen_bench_expectations.py
File bench/gen_bench_expectations.py (right):

https://codereview.chromium.org/324083007/diff/1/bench/gen_bench_expectations...
bench/gen_bench_expectations.py:56: return [avg - 2*std_dev, avg + 2*std_dev]
Sometimes for some combinations the results from this one point all have the
same value, which will make the  upper and lower bounds the same. I suggest at
least adding some padding like -0.5, +0.5 to avoid this situation. Could be done
in subsequent CLs though.

[benchen, 2014-06-10 20:00:29]

Oh, and for CL descriptions, since we also have "gm rebaseline", it's clearer to
use "bench rebaseline" for bench related CLs.

[kelvinly, 2014-06-10 20:19:37]

The CQ bit was checked by kelvinly@google.com

[commit-bot: I haz the power, 2014-06-10 20:19:56]

CQ is trying da patch. Follow status at
 https://skia-tree-status.appspot.com/cq/kelvinly@google.com/324083007/1

[commit-bot: I haz the power, 2014-06-10 22:05:14]

Change committed as b6f431612fb6bcf86217f9136846b00ab57efa5c