All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=780903

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=318a791d3841a99337052bfe7c12540ce641f4c5106fadd838b295e6d2bcb988


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

chromium-rel-win10
chromium-rel-win7-gpu-ati

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8964016798354026112

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

Suspected Commit
  Author : Jeremy Roman
  Commit : 863386d2cb0b88e41d8f720227930b9b1ad071cc
  Date   : Tue Oct 31 19:25:38 2017
  Subject: [c++] Permit heterogeneous container lookup and use it in base::CommandLine.

Bisect Details
  Configuration: winx64_10_perf_bisect
  Benchmark    : media_perftests
  Metric       : sinc_resampler_convolve/optimized_unaligned
  Change       : 7.11% | 108167.325866 -> 115853.147733

Revision             Result                 N
chromium@512874      108167 +- 30796.1      6      good
chromium@512895      113834 +- 84.2214      6      good
chromium@512901      113698 +- 460.102      6      good
chromium@512904      113742 +- 248.191      6      good
chromium@512905      113834 +- 196.312      6      good
chromium@512906      115902 +- 392.507      6      bad       <--
chromium@512916      116009 +- 70.6085      6      bad
chromium@512958      115853 +- 723.336      6      bad

To Run This Test
  .\src\out\Release_x64\media_perftests.exe --single-process-tests

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8964016798354026112


For feedback, file a bug with component Speed>Bisection