All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=783642

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=d9d86a4bbe669443d24a3f05e5475e8866cb4389b1eb09cbde7806302b8b34bf


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

android-nexus5

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8963323303356987088

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

Suspected Commit
  Author : Justin Novosad
  Commit : 5b07996e178c5f4e153e771d48ab839867fa7440
  Date   : Wed Nov 08 23:26:00 2017
  Subject: Reland: Refactor of Canvas2DLayerBridge resource model

Bisect Details
  Configuration: android_nexus5_perf_bisect
  Benchmark    : smoothness.gpu_rasterization.tough_filters_cases
  Metric       : frame_times/IE PirateMark
  Change       : 13.20% | 35.5532617376 -> 40.245289177

Revision             Result                   N
chromium@514974      35.5533 +- 0.163524      6      good
chromium@514989      35.6096 +- 0.240754      6      good
chromium@514997      35.6176 +- 0.251164      6      good
chromium@514999      35.5807 +- 0.187791      6      good
chromium@515000      35.5022 +- 0.216018      6      good
chromium@515001      40.2555 +- 0.324904      6      bad       <--
chromium@515004      40.19 +- 0.179283        6      bad
chromium@515033      40.2523 +- 0.121903      6      bad
chromium@515092      40.2453 +- 0.255243      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=IE.PirateMark smoothness.gpu_rasterization.tough_filters_cases

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8963323303356987088


For feedback, file a bug with component Speed>Bisection