All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=783739

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=d02c6a0f7fd475a69e86f90d7aacb5c5312852d0189756e1ca98fcde9aa3ce29


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

android-nexus5

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8963315730058417616

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

Suspected Commit
  Author : Caleb Rouleau
  Commit : 5daa21ce99f8f70abe1202689a510d9f03e5a3e1
  Date   : Wed Nov 08 23:25:07 2017
  Subject: Have pages edit grouping keys themselves.

Bisect Details
  Configuration: android_nexus5_perf_bisect
  Benchmark    : loading.mobile
  Metric       : timeToFirstMeaningfulPaint_avg/Regular-3G/Youtube
  Change       : 77.63% | 7201.1555 -> 1610.8615

Revision             Result                  N
chromium@514974      7201.16 +- 1000.6       6      good
chromium@514989      7179.58 +- 871.024      6      good
chromium@514997      7126.56 +- 1072.25      6      good
chromium@514998      7601.65 +- 1368.59      6      good
chromium@514999      1608.3 +- 82.0594       6      bad       <--
chromium@515001      1604.25 +- 96.8884      6      bad
chromium@515004      1598.52 +- 99.9631      6      bad
chromium@515033      1610.02 +- 55.862       6      bad
chromium@515092      1610.86 +- 48.7337      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=Youtube loading.mobile

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8963315730058417616


For feedback, file a bug with component Speed>Bisection