All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=681031

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgwOPrpAoM


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

chromium-rel-win10

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8990565510798379408

=== BISECT JOB RESULTS ===
Perf regression found but unable to narrow commit range

Bisect Details
  Configuration: winx64_10_perf_bisect
  Benchmark    : thread_times.tough_scrolling_cases
  Metric       : thread_total_all_cpu_time_per_frame/thread_total_all_cpu_time_per_frame

Suspected Commit Range
  4 commits in range
  https://chromium.googlesource.com/chromium/src/+log/38d5cb2144655aad592209bb2a59d21be02df69d..9e81b5fefe756225638bb71dfb097fa11d2a8f8c


Revision             Result                   N
chromium@442950      12.8111 +- 0.275031      9        good
chromium@443011      12.9047 +- 0.977285      14       good
chromium@443019      12.7254 +- 0.695169      14       good
chromium@443021      ---                      ---      build failure
chromium@443023      12.9109 +- 0.425087      21       bad
chromium@443026      12.9493 +- 0.461246      14       bad
chromium@443041      12.9874 +- 0.229272      6        bad
chromium@443071      13.0023 +- 0.183982      6        bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=release_x64 --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests thread_times.tough_scrolling_cases

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8990565510798379408

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=6373856962412544


| O O | Visit http://www.chromium.org/developers/speed-infra/perf-bug-faq
|  X  | for more information addressing perf regression bugs. For feedback,
| / \ | file a bug with component Tests>AutoBisect.  Thank you!

This alert was found before M-60 branched. Closing as WontFix as this is believed to either be invalid or non-reproducible.