All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=749338

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=8728de99b4e8a26f3bc9fb647912d36a7a232ec6e2981ddf3c8ec5c9c44654d1


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

android-nexus7v2
chromium-rel-win10
chromium-rel-win7-gpu-intel
chromium-rel-win7-gpu-nvidia

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8972961283033618016

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

Suspected Commit
  Author : Naina Raisinghani
  Commit : fd7f99c9125b7f9b054b3a32c0100b526792f74c
  Date   : Mon Jul 24 05:21:35 2017
  Subject: Remove code and tests using StyleSharing

Bisect Details
  Configuration: android_nexus7_perf_bisect
  Benchmark    : blink_perf.shadow_dom
  Metric       : v1-large-shallow-layout/v1-large-shallow-layout
  Change       : 19.99% | 83.7445 -> 100.482

Revision             Result                  N
chromium@488906      83.7445 +- 1.15038      6      good
chromium@488914      86.098 +- 5.79137       6      good
chromium@488915      103.4 +- 3.15046        6      bad       <--
chromium@488916      105.795 +- 7.01841      6      bad
chromium@488918      103.07 +- 2.86851       6      bad
chromium@488921      103.701 +- 7.17096      6      bad
chromium@488935      100.482 +- 3.00346      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 blink_perf.shadow_dom

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8972961283033618016


For feedback, file a bug with component Speed>Bisection