All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=765119

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=d740c3a14f237aa4753e96a8aecee48a36118c4be3ae6843e2345625157240f6


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

android-nexus5X

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8968483858617845888

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

Suspected Commit
  Author : Brian White
  Commit : 1278570bd438b22d1a703d67d441d813839d44ac
  Date   : Tue Sep 05 01:25:16 2017
  Subject: Revert "Do histogram validation after every JNI call."

Bisect Details
  Configuration: android_nexus5X_perf_bisect
  Benchmark    : thread_times.key_mobile_sites_smooth
  Metric       : thread_IO_cpu_time_per_frame/http___nytimes.com_
  Change       : 7.83% | 1.94649066165 -> 2.09896901596

Revision             Result                   N
chromium@499524      1.94649 +- 0.225759      9      good
chromium@499533      1.90028 +- 0.153049      6      good
chromium@499536      1.90287 +- 0.207123      6      good
chromium@499537      2.15862 +- 0.175644      6      bad       <--
chromium@499538      2.15323 +- 0.176148      6      bad
chromium@499542      2.13862 +- 0.128881      6      bad
chromium@499560      2.09897 +- 0.124619      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...nytimes.com. thread_times.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/8968483858617845888


For feedback, file a bug with component Speed>Bisection