All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=776753

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=7e5b9adc546da15c3a17d3e8b18591d593cdec9dd5dbee5db85e5222590b91bc


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

android-nexus5

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8965206442750339504

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

Suspected Commit
  Author : David Bokan
  Commit : b0d47f5f4d4b9717bfdd43ae6d40257235d0848f
  Date   : Fri Oct 13 16:49:07 2017
  Subject: Fix coordinate space issues in scroll.js

Bisect Details
  Configuration: android_nexus5_perf_bisect
  Benchmark    : smoothness.sync_scroll.key_mobile_sites_smooth
  Metric       : mean_input_event_latency/http___worldjournal.com_
  Change       : 109.42% | 75.2393333333 -> 157.564833333

Revision                                 Result                  N
chromium@508719                          75.2393 +- 4.20675      6      good
chromium@508786                          75.0352 +- 5.52912      6      good
chromium@508789                          77.6477 +- 6.13266      6      good
chromium@508789,catapult@b0d47f5f4d      157.921 +- 19.1994      6      bad       <--
chromium@508789,catapult@dd5b39ac0c      161.472 +- 36.118       6      bad
chromium@508790                          161.255 +- 25.5131      6      bad
chromium@508791                          163.637 +- 43.2109      6      bad
chromium@508795                          144.078 +- 32.822       6      bad
chromium@508803                          154.192 +- 39.4018      6      bad
chromium@508819                          150.309 +- 23.4388      6      bad
chromium@508852                          157.565 +- 47.2357      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=http...worldjournal.com. smoothness.sync_scroll.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/8965206442750339504


For feedback, file a bug with component Speed>Bisection