All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=700969

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg1MiFwAoM


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

chromium-rel-win7-gpu-intel

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8985217535278851216

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8985217481297906912

I kicked off two bisects, one for the second spike (with the alert) and one for the first.

=== BISECT JOB RESULTS ===
NO Perf regression found

Bisect Details
  Configuration: winx64intel_perf_bisect
  Benchmark    : smoothness.top_25_smooth
  Metric       : frame_times/http___www.youtube.com

Revision             Result                   N
chromium@456010      17.0618 +- 0.937285      21      good
chromium@456048      17.0219 +- 0.892368      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 --story-filter=http...www.youtube.com smoothness.top_25_smooth

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8985217535278851216

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5777205717630976


| 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!

=== BISECT JOB RESULTS ===
NO Perf regression found

Bisect Details
  Configuration: winx64intel_perf_bisect
  Benchmark    : smoothness.top_25_smooth
  Metric       : frame_times/http___www.youtube.com

Revision             Result                    N
chromium@455055      16.8458 +- 0.0177107      21      good
chromium@455781      16.846 +- 0.014923        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 --story-filter=http...www.youtube.com smoothness.top_25_smooth

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8985217481297906912

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=6114242001895424


| 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!

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8982592682779995392

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