All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=788348

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=87a6800c1ecd503de12a3192faf4de9a0b3ebd68e9eec31977d6361fddabc5cf


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

android-webview-nexus6

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8962046036852133424

=== 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_nexus6_aosp_perf_bisect
  Benchmark    : blink_perf.css
  Metric       : CSSPropertySetterGetterMethods/CSSPropertySetterGetterMethods
  Change       : 29.03% | 627.010252836 -> 445.004873281

Revision             Result                  N
chromium@517977      627.01 +- 10.0518       6      good
chromium@518004      630.643 +- 4.81983      6      good
chromium@518011      620.037 +- 8.62778      6      good
chromium@518014      619.858 +- 3.21184      6      good
chromium@518015      620.385 +- 7.09313      6      good
chromium@518016      448.215 +- 3.71596      6      bad       <--
chromium@518017      448.324 +- 6.32266      6      bad
chromium@518030      445.005 +- 5.30051      6      bad

Please refer to the following doc on diagnosing blink_perf regressions:
  https://chromium.googlesource.com/chromium/src/+/master/docs/speed/benchmark_harnesses/blink_perf.md

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 blink_perf.css

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8962046036852133424


For feedback, file a bug with component Speed>Bisection