All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=842761

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=4e31603ada2df3e3d108b5462ed1d74c8996c325c4f2c3c1122fc94aa09f773d


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

health-plan-clankium-phone

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8946533067966211808

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

Suspected Commit
  Author : Andrew Grieve
  Commit : dfb58c04e51c2e3eb18f7e78fcc829b7d9d6ff05
  Date   : Fri May 11 03:48:36 2018
  Subject: Revert "Remove -stablesparsenaming proguard flag"

Bisect Details
  Configuration: clankium-phone-perf-bisect
  Benchmark    : memory.top_10_mobile
  Metric       : memory:chrome:all_processes:reported_by_os:system_memory:proportional_resident_size_avg/background/after_http_www_baidu_com_s_word_google
  Change       : 2.86% | 91801772.0 -> 94423041.3333

Revision                       Result                  N
android-chrome@a03058257f      91801772 +- 191584      6      good
android-chrome@159f504c2c      91629399 +- 216119      6      good
android-chrome@e65cccf457      92560727 +- 494018      6      good
android-chrome@6b1376335e      92675585 +- 197717      6      good
android-chrome@dfb58c04e5      94667607 +- 379696      6      bad       <--
android-chrome@1bfcb4ee3d      94425431 +- 240920      6      bad
android-chrome@120ca38372      94423041 +- 242269      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=http.www.baidu.com.s.word.google memory.top_10_mobile

More information on addressing performance regressions:
  http://g.co/ChromePerformanceRegressions

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8946533067966211808


For feedback, file a bug with component Speed>Bisection