All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=855469

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=02564b8b09c86e69eb002bbf55b39af89f9ec3c23a3ca03aea294f94ca8c4521


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

perf-go-webview-phone

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8943021936293748592

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

Suspected Commit
  Author : James Wallace-Lee
  Commit : fbb0e336a2d6fe1237aecbb9cdfaa59e252857fa
  Date   : Mon Jun 18 23:57:47 2018
  Subject: AW: Don't draw if PrepareTiles is needed and no damage

Bisect Details
  Configuration: go-webview-phone-perf-bisect
  Benchmark    : memory.top_10_mobile
  Metric       : memory:webview:all_processes:reported_by_chrome:cc:effective_size_avg/background/after_https_www_google_co_uk_hl_en_q_science
  Change       : 4.17% | 2019913.14286 -> 2104173.71429

Revision                                       Result                  N
android-chrome@8e54c6dbe8                      2019913 +- 61447.5      14      good
android-chrome@8e54c6dbe8,chromium@568239      1997028 +- 43690.7      9       good
android-chrome@8e54c6dbe8,chromium@568240      2113536 +- 0.0          6       bad       <--
android-chrome@8e54c6dbe8,chromium@568241      2113536 +- 0.0          6       bad
android-chrome@8e54c6dbe8,chromium@568243      2113536 +- 0.0          6       bad
android-chrome@8e54c6dbe8,chromium@568247      2113536 +- 0.0          6       bad
android-chrome@8e54c6dbe8,chromium@568255      2113536 +- 0.0          6       bad
android-chrome@6e1a51a024                      2104174 +- 35030.5      14      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=https.www.google.co.uk.hl.en.q.science 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/8943021936293748592


For feedback, file a bug with component Speed>Bisection