All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=784339

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=9d8da7f8729c5f85049cd99680706659e8ee29c195b5d6329db3f8139c06ad5e


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

android-nexus5
android-nexus5X
android-nexus6
android-nexus7v2
android-webview-nexus5X

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8963037102813268752

Revert of recent improvement.

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

Suspected Commit
  Author : Caleb Rouleau
  Commit : 46cf2b51bb3b56831ded3ffb60400f51091400ea
  Date   : Fri Nov 10 22:23:42 2017
  Subject: [Telemetry] give traffic_setting to parent. Fix Bug.

Bisect Details
  Configuration: android_nexus5X_perf_bisect
  Benchmark    : loading.mobile
  Metric       : timeToFirstContentfulPaint_avg/cold_Regular-3G/FlipBoard
  Change       : 29678.65% | 167.7435 -> 49951.7556667

Revision             Result                  N
chromium@515681      167.743 +- 53.155       6      good
chromium@515711      162.788 +- 51.4696      6      good
chromium@515713      163.816 +- 52.1667      6      good
chromium@515714      49831.8 +- 462.523      6      bad       <--
chromium@515715      49545.4 +- 1032.97      6      bad
chromium@515719      49432.9 +- 1167.88      6      bad
chromium@515726      49558.3 +- 1008.4       6      bad
chromium@515740      49728.9 +- 1585.34      6      bad
chromium@515799      49951.8 +- 794.304      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=FlipBoard loading.mobile

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8963037102813268752


For feedback, file a bug with component Speed>Bisection