All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=788327

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=a34ee2736580e9a7fcdb0f2c1f0d1b343a436c0bd69effbbc712bbb1a0360e79


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

android-webview-nexus5X

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8962048222799255616

=== 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_webview_arm64_aosp_perf_bisect
  Benchmark    : smoothness.tough_animation_cases
  Metric       : frame_times/balls_svg_animations.html
  Change       : 6.80% | 271.128441005 -> 289.571987675

Revision             Result                  N
chromium@518008      271.128 +- 2.53405      6      good
chromium@518015      277.213 +- 4.94132      6      good
chromium@518016      290.202 +- 3.17699      6      bad       <--
chromium@518017      290.118 +- 6.89787      6      bad
chromium@518018      288.484 +- 3.62449      6      bad
chromium@518021      287.391 +- 5.54483      6      bad
chromium@518034      287.965 +- 4.8696       6      bad
chromium@518060      289.572 +- 3.1646       6      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=android-webview --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=balls.svg.animations.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/8962048222799255616


For feedback, file a bug with component Speed>Bisection