All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=856359

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=895785b52343c218d0a001123cffd92263430a9239d510838918a6524b07a169


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

health-plan-webview-phone

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8942709343092379072

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8942614569675856720

=== 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:effective_size_avg/load_media/load_media_youtube
  Change       : 1.74% | 32333216.8889 -> 32895811.8889

Revision                                       Result                  N
android-chrome@6305b6474c                      32333217 +- 295736      9       good
android-chrome@e841561f09                      32498618 +- 267468      14      good
android-chrome@e841561f09,chromium@569891      32399103 +- 259289      9       good
android-chrome@e841561f09,chromium@569894      32311850 +- 256774      9       good
android-chrome@e841561f09,chromium@569895      32411032 +- 241165      6       good
android-chrome@e841561f09,chromium@569896      33055415 +- 333987      6       bad       <--
android-chrome@e841561f09,chromium@569897      32846260 +- 295241      14      bad
android-chrome@e841561f09,chromium@569902      32998348 +- 395808      9       bad
android-chrome@33d8f0dcc2                      32895812 +- 212809      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/8942709343092379072


For feedback, file a bug with component Speed>Bisection

=== 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:effective_size_avg/load_media/load_media_youtube
  Change       : 1.78% | 32296488.8889 -> 32871033.6667

Revision                                       Result                  N
android-chrome@6305b6474c                      32296489 +- 277565      9       good
android-chrome@e841561f09                      32355086 +- 259888      9       good
android-chrome@e841561f09,chromium@569891      32481466 +- 274894      14      good
android-chrome@e841561f09,chromium@569894      32452737 +- 224946      9       good
android-chrome@e841561f09,chromium@569895      32338730 +- 293731      9       good
android-chrome@e841561f09,chromium@569896      32910697 +- 445303      9       bad       <--
android-chrome@e841561f09,chromium@569897      33069431 +- 168773      6       bad
android-chrome@e841561f09,chromium@569902      32907179 +- 284518      9       bad
android-chrome@33d8f0dcc2                      32871034 +- 307451      6       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/8942614569675856720


For feedback, file a bug with component Speed>Bisection