All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=860744

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=c1d5ef349ca8e23f5faaecb7757bd8e490c1751332208988620ff9f0c1a0a442


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/8941731426517232128

=== 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: clankium-low-end-phone-perf-bisect
  Benchmark    : system_health.memory_mobile
  Metric       : memory:chrome:all_processes:reported_by_os:gpu_memory:proportional_resident_size_avg/background_tools/background_tools_gmail
  Change       : 6250.00% | 262144.0 -> 16646144.0

Revision                                       Result                   N
android-chrome@99480dfb2c                      262144 +- 0.0            6      good
android-chrome@878f534e9f                      262144 +- 0.0            6      good
android-chrome@878f534e9f,chromium@572347      262144 +- 0.0            6      good
android-chrome@878f534e9f,chromium@572376      262144 +- 0.0            6      good
android-chrome@878f534e9f,chromium@572377      15335424 +- 2567138      6      bad       <--
android-chrome@878f534e9f,chromium@572378      13413035 +- 749139       6      bad
android-chrome@878f534e9f,chromium@572380      13500416 +- 977344       6      bad
android-chrome@878f534e9f,chromium@572383      14680064 +- 2621440      6      bad
android-chrome@878f534e9f,chromium@572390      15772331 +- 3116832      6      bad
android-chrome@4d11ebe3cf                      16646144 +- 3010664      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/8941731426517232128


For feedback, file a bug with component Speed>Bisection