All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=759101

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=7578efa95234055c834bfa13a61910869bb4a06778e0f89c827ae9ad0da93b46


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

android-nexus7v2

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8970267416868762320

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

Suspected Commit
  Author : Brian White
  Commit : 7662ff8cb53121cd4d8916007d430b36efd45895
  Date   : Thu Aug 24 00:03:13 2017
  Subject: Validate histograms before and after each task on Android.

Bisect Details
  Configuration: android_nexus7_perf_bisect
  Benchmark    : media.android.tough_video_cases
  Metric       : seek/video.html?src_tulip2.wav_type_audio_seek
  Change       : 121.08% | 26.3775 -> 58.315

Revision             Result                  N
chromium@496667      26.3775 +- 3.85351      6      good
chromium@496809      31.0467 +- 15.9393      6      good
chromium@496845      25.5642 +- 2.76953      6      good
chromium@496863      31.3117 +- 16.1183      6      good
chromium@496872      26.3508 +- 5.20475      6      good
chromium@496876      28.18 +- 16.8171        9      good
chromium@496877      25.3183 +- 2.46519      6      good
chromium@496878      55.7456 +- 72.4429      9      bad       <--
chromium@496880      55.6492 +- 22.3126      6      bad
chromium@496950      58.315 +- 18.1092       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=video.html.src.tulip2.wav.type.audio.seek media.android.tough_video_cases

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8970267416868762320


For feedback, file a bug with component Speed>Bisection