All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=753997

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=92153abfc6a6d510bae16c1ac256bfab9d622da34becc7a692b22568517d97f7


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

chromium-rel-win7-gpu-intel

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8971702961347025040

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

Bisect Details
  Configuration: winx64intel_perf_bisect
  Benchmark    : smoothness.tough_animation_cases
  Metric       : frame_times/overlay_background_color_css_transitions.html

Revision             Result                  N
chromium@491680      103.139 +- 16.4188      21      good
chromium@491729      103.242 +- 10.0656      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=overlay.background.color.css.transitions.html smoothness.tough_animation_cases

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8971702961347025040


For feedback, file a bug with component Speed>Bisection

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8968083033890692352

Extending to a wider range since the graph bumps up over a few revisions.

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

Bisect Details
  Configuration: winx64intel_perf_bisect
  Benchmark    : smoothness.tough_animation_cases
  Metric       : frame_times/overlay_background_color_css_transitions.html

Revision             Result                  N
chromium@491358      388.623 +- 177.154      21      good
chromium@491959      407.539 +- 121.551      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=overlay.background.color.css.transitions.html smoothness.tough_animation_cases

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8968083033890692352


For feedback, file a bug with component Speed>Bisection

Doesn't repro.