All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=860742

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=fc325749ef2e6d728ee1239dfec033d6adbe721984059b44de8aaaccaf78b8b6


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

health-plan-clankium-low-end-phone
perf-go-phone-1024
perf-go-phone-512

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8941731454079089056

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

Suspected Commit
  Author : Khushal
  Commit : db2d4ad73d521275dd1c97a7ebc8effce024f948
  Date   : Tue Jul 03 22:36:27 2018
  Subject: gpu: Share GrContext between RasterDecoders for OOP raster.

Bisect Details
  Configuration: go-phone-1024-perf-bisect
  Benchmark    : system_health.memory_mobile
  Metric       : memory:chrome:all_processes:reported_by_chrome:malloc:effective_size_avg/background_tools/background_tools_gmail
  Change       : 59.81% | 17059092.6667 -> 27261932.6667

Revision                                       Result                   N
android-chrome@99480dfb2c                      17059093 +- 23225.9      6      good
android-chrome@878f534e9f                      16272636 +- 332957       6      good
android-chrome@878f534e9f,chromium@572347      16057793 +- 239273       6      good
android-chrome@878f534e9f,chromium@572376      16538436 +- 616507       6      good
android-chrome@878f534e9f,chromium@572377      26253067 +- 1266807      6      bad       <--
android-chrome@878f534e9f,chromium@572378      26366017 +- 1525826      6      bad
android-chrome@878f534e9f,chromium@572380      25841109 +- 1100386      6      bad
android-chrome@878f534e9f,chromium@572383      26617403 +- 1196093      6      bad
android-chrome@878f534e9f,chromium@572390      27032529 +- 1355911      6      bad
android-chrome@4d11ebe3cf                      26111876 +- 548097       6      bad
android-chrome@22df6667c5                      27261933 +- 1295239      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-chrome --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=background.tools.gmail 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/8941731454079089056


For feedback, file a bug with component Speed>Bisection