All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=800060

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=2e3ecdadb8e31854ed60c1d268cd07f3f0a88a9b2b1f98a2b7525e1fe19d761a


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

android-nexus5
android-nexus5X
android-nexus6
android-webview-nexus6

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8957936658713888944

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

Suspected Commit
  Author : George Burgess IV
  Commit : 274d75742451914f74bbad40c405da7f902dd232
  Date   : Wed Jan 03 23:22:46 2018
  Subject: Turn on AFDO for Chromium on Android

Bisect Details
  Configuration: android_nexus5_perf_bisect
  Benchmark    : smoothness.tough_canvas_cases
  Metric       : frame_times/tough_canvas_cases_rendering_throughput_canvas_arcs.html
  Change       : 7.41% | 213.089258667 -> 228.870393829

Revision             Result                  N
chromium@526759      213.089 +- 5.41432      6      good
chromium@526826      213.745 +- 9.01083      6      good
chromium@526843      213.871 +- 6.28313      6      good
chromium@526851      210.848 +- 11.2037      6      good
chromium@526855      215.232 +- 5.93153      6      good
chromium@526857      213.649 +- 9.05262      6      good
chromium@526858      227.911 +- 6.10906      6      bad       <--
chromium@526859      226.604 +- 10.3715      6      bad
chromium@526892      228.87 +- 8.79534       6      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=android-chromium --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=tough.canvas.cases.rendering.throughput.canvas.arcs.html smoothness.tough_canvas_cases

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8957936658713888944


For feedback, file a bug with component Speed>Bisection