All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=758955

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=9f7e2969cb4922ac0f9e7d41593a3abed8b358f4d7a9c1b2c43acc57c8cf123f


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

android-nexus7v2

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8970287077591604160

=== 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.key_mobile_sites_smooth
  Metric       : first_gesture_scroll_update_latency/Pinterest
  Change       : 79.48% | 191.361285714 -> 343.450777778

Revision             Result                  N
chromium@496667      191.361 +- 261.399      14      good
chromium@496809      197.669 +- 282.421      14      good
chromium@496845      174.199 +- 168.688      6       good
chromium@496863      119.468 +- 90.5571      6       good
chromium@496872      169.701 +- 186.094      6       good
chromium@496876      150.751 +- 232.846      6       good
chromium@496877      223.364 +- 67.7269      6       good
chromium@496878      371.863 +- 161.26       9       bad       <--
chromium@496880      387.167 +- 158.29       6       bad
chromium@496950      343.451 +- 319.87       9       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=Pinterest smoothness.key_mobile_sites_smooth

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8970287077591604160


For feedback, file a bug with component Speed>Bisection