All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=699157

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDghJfg9AsM


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

chromium-rel-win10

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8985760699316859536

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

Build failures prevented the bisect from narrowing the range further.


Bisect Details
  Configuration: winx64_10_perf_bisect
  Benchmark    : startup.cold.blank_page
  Metric       : open_tabs_time/open_tabs_time
  Change       : 117.46% | 227.428571429 -> 494.571428571

Suspected Commit Range
  41 commits in range
  https://chromium.googlesource.com/chromium/src/+log/ec69818af043485daccd4d4f43718390e9ddcb08..e4dd371c464f77b6fbef56d212f7de71e03bf002


Revision             Result                  N
chromium@451992      227.429 +- 808.583      21       good
chromium@452027      185.5 +- 30.6186        6        good
chromium@452028      ---                     ---      build failure
---                  ---                     ---      too many build failures to list
chromium@452067      ---                     ---      build failure
chromium@452068      636.667 +- 205.483      6        bad
chromium@452087      494.571 +- 1015.88      21       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 startup.cold.blank_page

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8985760699316859536

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5858268997484544


| 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 Speed>Bisection.  Thank you!

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