All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=856072

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=635a3a71ef57bc2b59210f81de2594ac374eb8fd56220266b464a43526e952a8


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

health-plan-clankium-low-end-phone

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8942758012031349984

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

Suspected Commit
  Author : Steve Kobes
  Commit : 807c7cf898178b44c11866b69cf350da47f41b76
  Date   : Sat Jun 23 22:39:38 2018
  Subject: Remove ScrollableArea::IsScrollable and IsProgrammaticallyScrollable.

Bisect Details
  Configuration: clankium-low-end-phone-perf-bisect
  Benchmark    : system_health.memory_mobile
  Metric       : memory:chrome:all_processes:reported_by_os:gpu_memory:proportional_resident_size_avg/load_media/load_media_youtube
  Change       : 12.15% | 8465066.66667 -> 9241713.77778

Revision                                       Result                 N
android-chrome@6305b6474c                      8465067 +- 489880      6       good
android-chrome@e841561f09                      8418418 +- 254758      9       good
android-chrome@e841561f09,chromium@569891      8185401 +- 531520      9       good
android-chrome@e841561f09,chromium@569894      8198290 +- 470633      14      good
android-chrome@e841561f09,chromium@569895      8572197 +- 433090      14      good
android-chrome@e841561f09,chromium@569896      9431625 +- 745771      14      bad       <--
android-chrome@e841561f09,chromium@569897      9700011 +- 656233      6       bad
android-chrome@e841561f09,chromium@569902      9356727 +- 911621      14      bad
android-chrome@33d8f0dcc2                      9241714 +- 513609      9       bad

Please refer to the following doc on diagnosing memory regressions:
  https://chromium.googlesource.com/chromium/src/+/master/docs/memory-infra/memory_benchmarks.md

To Run This Test
  src/tools/perf/run_benchmark -v --browser=android-chrome --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=load.media.youtube system_health.memory_mobile

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8942758012031349984


For feedback, file a bug with component Speed>Bisection