All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=758220

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=58588031a3163e881112ffd733d6233012204b0bb982dade08be829d1f27c763


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

chromium-rel-mac12-mini-8gb

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8970458333082071280

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

Suspected Commit
  Author : Dominic Mazzoni
  Commit : 91ce4a5c047cf0a01f7d23c839bd4364428fa6ad
  Date   : Thu Aug 17 04:47:27 2017
  Subject: Add use counters for all ARIA attributes.

Bisect Details
  Configuration: mac_10_12_mini_8gb_perf_bisect
  Benchmark    : blink_perf.bindings
  Metric       : set-attribute-rare/set-attribute-rare
  Change       : 10.88% | 586.18777318 -> 522.866362384

Revision             Result                  N
chromium@495073      586.188 +- 6.37061      9       good
chromium@495075      573.076 +- 129.233      14      good
chromium@495076      535.526 +- 26.5495      9       bad       <--
chromium@495077      539.227 +- 7.40996      9       bad
chromium@495081      539.932 +- 3.91486      6       bad
chromium@495089      504.179 +- 2.76758      6       bad
chromium@495104      526.03 +- 48.7619       6       bad
chromium@495135      522.866 +- 1.88849      6       bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests blink_perf.bindings

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8970458333082071280


For feedback, file a bug with component Speed>Bisection