All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=788363

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=fa3c5c1fcea76f143ffa75815a7c248a2ccf02d600158a89231c036ecff982ca


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

android-one

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8962044108975119936

=== BISECT JOB RESULTS ===
Perf regression found with culprit

Suspected Commit
  Author : Ian Kilpatrick
  Commit : 98b46470f307a68c8183d628237d7b361af96244
  Date   : Tue Nov 21 01:22:24 2017
  Subject: Add secure_context_mode_ to CSSParserContext.

Bisect Details
  Configuration: android_one_perf_bisect
  Benchmark    : smoothness.tough_animation_cases
  Metric       : frame_times/balls_javascript_css.html
  Change       : 17.72% | 427.513009889 -> 503.253217028

Revision             Result                  N
chromium@517925      427.513 +- 12.3747      6      good
chromium@517986      429.79 +- 12.6913       6      good
chromium@518001      423.596 +- 4.79985      6      good
chromium@518009      431.902 +- 6.48346      6      good
chromium@518013      430.008 +- 10.159       6      good
chromium@518015      434.038 +- 19.4977      6      good
chromium@518016      501.368 +- 11.8023      6      bad       <--
chromium@518046      499.091 +- 9.49076      6      bad
chromium@518166      503.253 +- 15.9167      6      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=android-chromium --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=balls.javascript.css.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/8962044108975119936


For feedback, file a bug with component Speed>Bisection