All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=749923

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=8ed946321e2a122457ca47b2fea991d8ef0bcacbccb591efbcb5434ff8391647


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

android-nexus7v2

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8972863455928356880

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

Suspected Commit
  Author : Yutaka Hirano
  Commit : 4f87e237dabe3d4025c52a43885a469a7e872cd2
  Date   : Tue Jul 25 08:13:52 2017
  Subject: Use Independent URLLoader

Bisect Details
  Configuration: android_nexus7_perf_bisect
  Benchmark    : service_worker.service_worker_micro_benchmark
  Metric       : concurrent_1_response_90_percentile/concurrent_1_response_90_percentile
  Change       : 41.12% | 10.7622222222 -> 15.1872222222

Revision             Result                   N
chromium@489249      10.7622 +- 9.82207       9      good
chromium@489253      9.53583 +- 0.157863      6      good
chromium@489254      14.7417 +- 0.404763      6      bad       <--
chromium@489255      15.2742 +- 1.75957       6      bad
chromium@489257      14.8861 +- 1.98053       9      bad
chromium@489265      14.99 +- 1.63719         9      bad
chromium@489281      15.1872 +- 1.87993       9      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 service_worker.service_worker_micro_benchmark

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8972863455928356880


For feedback, file a bug with component Speed>Bisection