All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=740922

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=e326af6c51c2928c4a17590ea5267b42ed97159aaf10082ef596d8efa8ce5063


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

android-nexus5X

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8974363827521510256

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

Hi mvstanton@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 : Mike Stanton
  Commit : c633282dafeac8b929ec496077804190a9825ff7
  Date   : Wed Jul 05 14:08:08 2017
  Subject: [builtins] Array.map should transition output arrays.

Bisect Details
  Configuration: android_nexus5X_perf_bisect
  Benchmark    : media.android.tough_video_cases_tbmv2
  Metric       : memory:chrome:renderer_processes:reported_by_chrome:v8:heap:effective_size_avg/video.html?src_tulip2.mp4
  Change       : 1.12% | 2447355.33333 -> 2474712.0

Revision                           Result                  N
chromium@484295                    2447355 +- 3384.95      6      good
chromium@484304                    2446677 +- 399.697      6      good
chromium@484305                    2447290 +- 3415.36      6      good
chromium@484305,v8@02ce935ad3      2446737 +- 366.504      6      good
chromium@484305,v8@a93188c63d      2446730 +- 594.367      6      good
chromium@484305,v8@c633282daf      2474755 +- 3196.3       6      bad       <--
chromium@484306                    2474832 +- 3579.77      6      bad
chromium@484308                    2474115 +- 270.506      6      bad
chromium@484312                    2475509 +- 4191.93      6      bad
chromium@484329                    2474886 +- 2958.77      6      bad
chromium@484362                    2474712 +- 3226.69      6      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=video.html.src.tulip2.mp4 media.android.tough_video_cases_tbmv2

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8974363827521510256


For feedback, file a bug with component Speed>Bisection