All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=776774

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=23eac0c5a2782f9a23e0700ca0aa5d1e1fcb8b61b0b936201af155d32cf5a454


Bot(s) for this bug's original alert(s):

chromium-rel-win7-gpu-nvidia

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8965205444105747280

=== Auto-CCing suspected CL author jamie@nullspace.ca ===

Hi jamie@nullspace.ca, the bisect results pointed to your CL, please take a look at the
results.


=== BISECT JOB RESULTS ===
Perf regression found with culprit

Suspected Commit
  Author : Jamie Madill
  Commit : 0a6752e3cedd7852193b0f3f8c0e47cd0939812a
  Date   : Wed Oct 18 03:20:14 2017
  Subject: Use default window size in RenderTestParams.

Bisect Details
  Configuration: winx64nvidia_perf_bisect
  Benchmark    : angle_perftests
  Metric       : DynamicPromotion_d3d9/score
  Change       : 88.51% | 49173.0 -> 5650.83333333

Revision                              Result                  N
chromium@509854                       49173.0 +- 7.61577      6      good
chromium@509897                       49171.7 +- 7.43864      6      good
chromium@509897,angle@ba2eaea22f      49156.2 +- 17.2868      6      good
chromium@509897,angle@c514348e2a      49168.8 +- 7.40495      6      good
chromium@509897,angle@0a6752e3ce      5653.17 +- 11.262       6      bad       <--
chromium@509897,angle@d042fba42d      5650.5 +- 14.6116       6      bad
chromium@509898                       5655.83 +- 13.6687      6      bad
chromium@509899                       5648.83 +- 14.5201      6      bad
chromium@509900                       5647.67 +- 8.20569      6      bad
chromium@509903                       5647.33 +- 13.1656      6      bad
chromium@509908                       5653.17 +- 11.1729      6      bad
chromium@509919                       5649.83 +- 8.76546      6      bad
chromium@509940                       5649.5 +- 12.8647       6      bad
chromium@510025                       5650.83 +- 13.1466      6      bad

To Run This Test
  .\src\out\Release_x64\angle_perftests.exe --test-launcher-print-test-stdio=always --test-launcher-jobs=1

More information on addressing performance regressions:
  http://g.co/ChromePerformanceRegressions

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8965205444105747280


For feedback, file a bug with component Speed>Bisection