All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=867281

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=3cecb29c5cf9acb04b3eb7d55c6c5361104cadc7b9548c36849c4ae9cb337716


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

health-plan-webview-phone

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8940070842346213440

=== Auto-CCing suspected CL author enne@chromium.org ===

Hi enne@chromium.org, the bisect results pointed to your CL, please take a look at the
results.


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

Suspected Commit
  Author : Adrienne Walker
  Commit : f973fceec6e8eec76f90fa30d33a9a3c13aebf24
  Date   : Wed Jul 18 20:08:24 2018
  Subject: Free fewer resources when idle in oop raster

Bisect Details
  Configuration: webview-phone-perf-bisect
  Benchmark    : system_health.memory_mobile
  Metric       : memory:webview:all_processes:reported_by_os:system_memory:proportional_resident_size_avg/load_tools/load_tools_docs
  Change       : 1.99% | 62110210.6667 -> 63345666.6667

Revision                                       Result                   N
android-chrome@cd22f0f943                      62110211 +- 154671       6      good
android-chrome@cd22f0f943,chromium@576157      62132397 +- 144583       6      good
android-chrome@cd22f0f943,chromium@576174      62220803 +- 95238.4      6      good
android-chrome@cd22f0f943,chromium@576178      62033923 +- 172628       6      good
android-chrome@cd22f0f943,chromium@576179      62039725 +- 219162       6      good
android-chrome@cd22f0f943,chromium@576180      63407789 +- 116791       6      bad       <--
android-chrome@cd22f0f943,chromium@576182      63119533 +- 186280       6      bad
android-chrome@cd22f0f943,chromium@576190      63193432 +- 234824       6      bad
android-chrome@c0e3d62ff2                      63345667 +- 147852       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.tools.docs 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/8940070842346213440


For feedback, file a bug with component Speed>Bisection