All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=772704

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=475d3f195fc5d1b6368df35b46435c6db77c2fa45ea823118722adb7c9c87869


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

android-nexus5X

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8966315778592509984

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

Suspected Commit
  Author : Toon Verwaest
  Commit : b8b25e1c27b6634b764245671b5fcaacb19278bf
  Date   : Thu Sep 28 11:24:12 2017
  Subject: [ic] Remove extra-ic-state and Map::code_cache

Bisect Details
  Configuration: android_nexus5X_perf_bisect
  Benchmark    : v8.runtimestats.browsing_mobile
  Metric       : IC:duration_avg/browse_news/browse_news_toi
  Change       : 3.24% | 1618.638 -> 1671.04928571

Revision                           Result                  N
chromium@505039                    1618.64 +- 40.4457      6      good
chromium@505100                    1594.05 +- 29.9059      5      good
chromium@505130                    1602.71 +- 39.4234      5      good
chromium@505145                    1604.73 +- 73.8721      5      good
chromium@505153                    1606.58 +- 83.2636      6      good
chromium@505155                    1603.19 +- 48.598       6      good
chromium@505156                    1589.01 +- 110.541      8      good
chromium@505156,v8@329f694678      1596.97 +- 31.6205      7      good
chromium@505156,v8@690d52afa8      1600.75 +- 50.8478      9      good
chromium@505156,v8@b8b25e1c27      1692.41 +- 64.8484      5      bad       <--
chromium@505156,v8@70abcb06ae      1675.53 +- 26.0396      5      bad
chromium@505157                    1691.14 +- 20.2412      5      bad
chromium@505160                    1671.05 +- 26.3616      7      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=android-chromium --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=browse.news.toi v8.runtimestats.browsing_mobile

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8966315778592509984


For feedback, file a bug with component Speed>Bisection