All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=753654

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=0f964081f5cfc9b815941c4a7e41b6c7e0c3aac26312088c2ba62f37f2860cf0


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

chromium-rel-mac-retina
chromium-rel-mac11-pro
chromium-rel-mac12
chromium-rel-mac12-mini-8gb
chromium-rel-win10
chromium-rel-win7-gpu-ati
chromium-rel-win7-gpu-intel
chromium-rel-win8-dual
win-high-dpi

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8971770126841551328

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

Suspected Commit
  Author : Hajime Hoshi
  Commit : 3b236983f49cd29b183e446f0bad908ac3cab88b
  Date   : Mon Aug 07 07:24:17 2017
  Subject: Fix a leak of a document that is held by AutofillAgent

Bisect Details
  Configuration: mac_10_12_mini_8gb_perf_bisect
  Benchmark    : page_cycler_v2.basic_oopif
  Metric       : timeToFirstMeaningfulPaint_avg/pcv1-warm/http___www.ebay.com
  Change       : 216.55% | 191.887499998 -> 607.420333326

Revision             Result                  N
chromium@492256      191.887 +- 12.3732      6      good
chromium@492268      192.671 +- 18.803       6      good
chromium@492274      226.15 +- 216.634       6      good
chromium@492277      193.585 +- 20.4299      6      good
chromium@492278      600.073 +- 78.3469      6      bad       <--
chromium@492279      607.42 +- 74.2476       6      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=http...www.ebay.com page_cycler_v2.basic_oopif

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8971770126841551328


For feedback, file a bug with component Speed>Bisection