The following revision refers to this bug:
  https://chromium.googlesource.com/infra/infra/+/9839668a81958df32e143b4e5183af5a6803492d

commit 9839668a81958df32e143b4e5183af5a6803492d
Author: Brandon Wylie <wylieb@chromium.org>
Date: Fri Oct 06 16:57:26 2017

[Findit] Flake Analyzer - Timeout estimation should only sample from current build.

Bug:772039
Change-Id: I3af6a0f4a22a77c7fcbfb428540665071c31ed30
Reviewed-on: https://chromium-review.googlesource.com/702719
Commit-Queue: Brandon Wylie <wylieb@chromium.org>
Reviewed-by: Jeffrey Li <lijeffrey@chromium.org>
Reviewed-by: Shuotao Gao <stgao@chromium.org>

[modify] https://crrev.com/9839668a81958df32e143b4e5183af5a6803492d/appengine/findit/waterfall/flake/test/determine_true_pass_rate_pipeline_test.py
[modify] https://crrev.com/9839668a81958df32e143b4e5183af5a6803492d/appengine/findit/waterfall/flake/test/flake_analysis_util_test.py
[modify] https://crrev.com/9839668a81958df32e143b4e5183af5a6803492d/appengine/findit/waterfall/flake/flake_analysis_util.py
[modify] https://crrev.com/9839668a81958df32e143b4e5183af5a6803492d/appengine/findit/waterfall/flake/determine_true_pass_rate_pipeline.py