All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=842217

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=aa402dbe5432e1a04249f4368d814824c8abf2504a08973de63163736b1d91cb


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

health-plan-clankium-low-end-phone
health-plan-webview-low-end-phone

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8946806401642285376

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

Suspected Commit
  Author : jgruber
  Commit : e0c3f6d6ca005185e537fb85bbe841fe5dae5240
  Date   : Tue May 08 11:21:37 2018
  Subject: Disable embedded builtins

Bisect Details
  Configuration: webview-low-end-phone-perf-bisect
  Benchmark    : system_health.memory_mobile
  Metric       : memory:webview:all_processes:reported_by_chrome:v8:allocated_objects_size_avg/background_social/background_social_facebook
  Change       : 47.58% | 721056.0 -> 1064160.0

Revision                                                     Result              N
android-chrome@be902aa047                                    721056 +- 0.0       6      good
android-chrome@be902aa047,chromium@556849                    721076 +- 0.0       6      good
android-chrome@be902aa047,chromium@556890                    721076 +- 0.0       6      good
android-chrome@be902aa047,chromium@556893                    721076 +- 0.0       6      good
android-chrome@be902aa047,chromium@556894                    721076 +- 0.0       6      good
android-chrome@be902aa047,chromium@556894,v8@855850eb7f      721068 +- 0.0       6      good
android-chrome@be902aa047,chromium@556894,v8@e0c3f6d6ca      1064636 +- 0.0      6      bad       <--
android-chrome@be902aa047,chromium@556894,v8@c34562803e      1064636 +- 0.0      6      bad
android-chrome@be902aa047,chromium@556894,v8@9f5018c9b0      1064636 +- 0.0      6      bad
android-chrome@be902aa047,chromium@556894,v8@61af2762ef      1064160 +- 0.0      6      bad
android-chrome@be902aa047,chromium@556895                    1064160 +- 0.0      6      bad
android-chrome@be902aa047,chromium@556901                    1064160 +- 0.0      6      bad
android-chrome@be902aa047,chromium@556911                    1064160 +- 0.0      6      bad
android-chrome@1390428f76                                    1064160 +- 0.0      6      bad
android-chrome@41db54dacb                                    1064160 +- 0.0      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=background.social.facebook 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/8946806401642285376


For feedback, file a bug with component Speed>Bisection