All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=857081

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=28a8f62d00d2b40c81b0d55481662d40919dcc6e331feae71f0c16964725cc52


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

health-plan-webview-phone

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8942556646480390256

=== 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: webview-phone-perf-bisect
  Benchmark    : system_health.memory_mobile
  Metric       : memory:webview:all_processes:reported_by_chrome:malloc:allocated_objects_size_avg/load_media/load_media_youtube
  Change       : 0.68% | 64701002.6667 -> 65140107.5556

Revision                                       Result                  N
android-chrome@6305b6474c                      64701003 +- 234841      9       good
android-chrome@e841561f09                      64619404 +- 212147      9       good
android-chrome@e841561f09,chromium@569891      64630485 +- 312404      9       good
android-chrome@e841561f09,chromium@569894      64542345 +- 214642      6       good
android-chrome@e841561f09,chromium@569895      64537986 +- 234103      9       good
android-chrome@e841561f09,chromium@569896      65193321 +- 333632      6       bad       <--
android-chrome@e841561f09,chromium@569897      65175369 +- 260489      14      bad
android-chrome@e841561f09,chromium@569902      65057886 +- 225247      9       bad
android-chrome@33d8f0dcc2                      65140108 +- 317804      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-webview --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/8942556646480390256


For feedback, file a bug with component Speed>Bisection