All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=797421

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=fbc4ccde1cc4715535fd413f42339241ec9fcb8fb1136a2c7bfee5c8cf7bb1a4


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

android-webview-nexus5X

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8959470482613031504

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

Hi dtseng@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 : David Tseng
  Commit : 018d87586d823b803a5a6949444236f1f4bbe561
  Date   : Wed Dec 20 21:39:54 2017
  Subject: Revert "Turn NativeViewAccessibility into ViewAccessibility"

Bisect Details
  Configuration: android_webview_arm64_aosp_perf_bisect
  Benchmark    : system_health.memory_mobile
  Metric       : memory:webview:all_processes:reported_by_chrome:malloc:effective_size_avg/background_media/background_media_imgur
  Change       : 1.59% | 36406349.7143 -> 36985118.2857

Revision             Result                   N
chromium@525468      36406350 +- 2476007      21      good
chromium@525469      37023035 +- 1223858      9       bad       <--
chromium@525470      36961458 +- 2593038      21      bad
chromium@525472      36886787 +- 2494368      21      bad
chromium@525475      37106969 +- 2048248      14      bad
chromium@525481      37063101 +- 2604756      14      bad
chromium@525504      36947122 +- 2438264      14      bad
chromium@525531      36985118 +- 1840714      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=background.media.imgur 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/8959470482613031504


For feedback, file a bug with component Speed>Bisection

This recovered.