All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=758973

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=d074115fea2e8bff898928de7aecad9a9c039759eb7df94a47998e60a968f463


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

android-nexus7v2

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8970285544581273104

=== 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    : smoothness.top_25_smooth
  Metric       : percentage_smooth/Weather.com
  Change       : 18.60% | 92.7683200224 -> 75.5149955963

Revision             Result                  N
chromium@496667      92.7683 +- 5.91658      6      good
chromium@496809      92.985 +- 7.27434       6      good
chromium@496845      91.7374 +- 3.42558      6      good
chromium@496863      89.9063 +- 3.82392      6      good
chromium@496872      93.2122 +- 4.45553      6      good
chromium@496876      92.6304 +- 4.46595      6      good
chromium@496877      92.7367 +- 6.91936      6      good
chromium@496878      74.4005 +- 10.6087      6      bad       <--
chromium@496880      75.9892 +- 6.80657      6      bad
chromium@496950      75.515 +- 5.52246       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=Weather.com smoothness.top_25_smooth

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8970285544581273104


For feedback, file a bug with component Speed>Bisection