All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=663884

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg04r-vgkM


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

win-zenbook

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8996436520643516160

Bisect failed: http://build.chromium.org/p/tryserver.chromium.perf/builders/winx64_zen_perf_bisect/builds/586
Failure reason: the build has failed.

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8996258226446071632

===== BISECT JOB RESULTS =====
Status: failed


=== Bisection aborted ===
The bisect was aborted because The metric values for the initial "good" and "bad" revisions do not represent a clear regression.
Please contact the the team (see below) if you believe this is in error.

===== TESTED REVISIONS =====
Revision         Mean     Std Dev   N   Good?
chromium@430580  16.8476  0.583286  27  good
chromium@430606  16.8095  0.398899  27  bad

Bisect job ran on: winx64_zen_perf_bisect
Bug ID: 663884

Test Command: 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.khronos.org.registry.webgl.sdk.demos.webkit.ManyPlanetsDeep.html smoothness.tough_webgl_cases
Test Metric: mean_frame_time/http___www.khronos.org_registry_webgl_sdk_demos_webkit_ManyPlanetsDeep.html
Relative Change: None

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/winx64_zen_perf_bisect/builds/597
Job details: https://chromeperf.appspot.com/buildbucket_job_status/8996258226446071632


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=6445734017105920

| 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!

These regressions happened before M56 branch. M56 is now in stable. These regressions made it to the stable channel. Marking wontfix.