All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=761727

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=e147706d5d42d68350dd6723e9b96b6ae7e45b9929fa900d78e9f60a275991b4


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

chromium-rel-mac11
chromium-rel-mac11-pro
chromium-rel-mac12
chromium-rel-mac12-mini-8gb
chromium-rel-win7-gpu-ati
chromium-rel-win7-gpu-intel
chromium-rel-win7-x64-dual
win-high-dpi

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8969400187723903616

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

Suspected Commit
  Author : Dave Tapuska
  Commit : f238a1a8f2f73d226bdb38394a6e085a59cf0e41
  Date   : Mon Aug 28 21:24:39 2017
  Subject: Move Input Injection from Chrome IPC to mojo.

Bisect Details
  Configuration: mac_pro_perf_bisect
  Benchmark    : v8.runtimestats.browsing_desktop
  Metric       : v8-gc-phantom-handle-callback_max/browse_social/browse_social_tumblr_infinite_scroll
  Change       : 111.13% | 0.0898333333333 -> 0.189666666667

Revision             Result                      N
chromium@497727      0.0898333 +- 0.0362054      6      good
chromium@497804      0.097 +- 0.0291548          6      good
chromium@497842      0.109 +- 0.0579137          6      good
chromium@497861      0.0725 +- 0.0661324         6      good
chromium@497871      0.0788333 +- 0.0445739      6      good
chromium@497876      0.0833333 +- 0.0702235      6      good
chromium@497878      0.0906667 +- 0.0549545      9      good
chromium@497879      0.0986667 +- 0.151743       9      good
chromium@497880      0.199333 +- 0.13636         9      bad       <--
chromium@498032      0.189667 +- 0.038384        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=browse.social.tumblr.infinite.scroll v8.runtimestats.browsing_desktop

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8969400187723903616


For feedback, file a bug with component Speed>Bisection