All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=759104

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=f983e9c05417f91b335fcd004ec6d69ea213947e38cee6b80a94671251d06e37


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

android-nexus7v2

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8970267319073501776

=== 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_tbmv2
  Metric       : cpu_time_percentage_avg/video.html?src_tulip2.mp4
  Change       : 63.56% | 0.56498379903 -> 0.924082288203

Revision             Result                     N
chromium@496667      0.564984 +- 0.0743593      6      good
chromium@496809      0.56038 +- 0.0793888       6      good
chromium@496845      0.586233 +- 0.0151892      6      good
chromium@496863      0.551183 +- 0.109273       6      good
chromium@496872      0.585528 +- 0.0087677      6      good
chromium@496876      0.585437 +- 0.0143298      6      good
chromium@496877      0.581062 +- 0.0368984      6      good
chromium@496878      0.918865 +- 0.0349933      6      bad       <--
chromium@496880      0.911728 +- 0.0842389      6      bad
chromium@496950      0.924082 +- 0.0861908      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.mp4 media.android.tough_video_cases_tbmv2

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8970267319073501776


For feedback, file a bug with component Speed>Bisection