All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=776752

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=8a7df4a853a82f8f8628329d619d282a99b2bd27ff164e366dad0fa9fb9fd5e6


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

android-nexus5X

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8965206452969497824

=== 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_nexus5X_perf_bisect
  Benchmark    : smoothness.top_25_smooth
  Metric       : frame_times/http___booking.com
  Change       : 1.53% | 17.00544837 -> 17.2654653834

Revision                                 Result                   N
chromium@508734                          17.0054 +- 0.168761      9      good
chromium@508763                          16.9893 +- 0.29725       9      good
chromium@508778                          16.9597 +- 0.230682      6      good
chromium@508785                          17.0142 +- 0.136555      6      good
chromium@508789                          17.0285 +- 0.215187      6      good
chromium@508789,catapult@b0d47f5f4d      17.378 +- 0.406076       6      bad       <--
chromium@508789,catapult@dd5b39ac0c      17.4103 +- 0.286697      6      bad
chromium@508790                          17.3376 +- 0.592384      9      bad
chromium@508791                          17.343 +- 0.499057       9      bad
chromium@508792                          17.3162 +- 0.539252      9      bad
chromium@508849                          17.2655 +- 0.27084       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...booking.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/8965206452969497824


For feedback, file a bug with component Speed>Bisection