All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=855491

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=b2d8778543c6a6061caca1faf01d8c4b4301e932593791f457eeda86f010029d


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

perf-go-webview-phone

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8943021552000071056

=== 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_os:gpu_memory:proportional_resident_size_avg/background/after_http_yandex_ru_touchsearch_text_science
  Change       : 10.36% | 5088597.33333 -> 5615616.0

Revision                                       Result                  N
android-chrome@8e54c6dbe8                      5088597 +- 6166.71      6      good
android-chrome@8e54c6dbe8,chromium@568239      5087915 +- 6562.13      6      good
android-chrome@8e54c6dbe8,chromium@568240      5614933 +- 6029.15      6      bad       <--
android-chrome@8e54c6dbe8,chromium@568241      5616981 +- 7172.87      6      bad
android-chrome@8e54c6dbe8,chromium@568243      5616299 +- 6029.15      6      bad
android-chrome@8e54c6dbe8,chromium@568247      5616981 +- 7172.87      6      bad
android-chrome@8e54c6dbe8,chromium@568255      5616981 +- 4960.5       6      bad
android-chrome@6e1a51a024                      5615616 +- 9340.32      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=http.yandex.ru.touchsearch.text.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/8943021552000071056


For feedback, file a bug with component Speed>Bisection