All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=787415

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=c9231e2b9cf0a893ad11e0546dab02e8da965e891169c812f607aab748e83120


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

android-nexus5
android-nexus6
android-webview-nexus6
chromium-rel-mac11
chromium-rel-win7-gpu-intel
chromium-rel-win7-x64-dual

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8962315583595782480

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

Suspected Commit
  Author : Nghia Nguyen
  Commit : 564e33d345ee080be36ad0e6b6107afbcd09df4d
  Date   : Tue Nov 07 14:06:23 2017
  Subject: Update wprgo binaries to latest version

Bisect Details
  Configuration: android_webview_nexus6_aosp_perf_bisect
  Benchmark    : v8.browsing_mobile
  Metric       : total:500ms_window:renderer_eqt:v8_max/browse_news/browse_news_qq
  Change       : 70.37% | 67.8299081896 -> 115.562265041

Revision                                 Result                  N
chromium@515129                          67.8299 +- 92.1757      9       good
chromium@515147                          70.2507 +- 75.1746      9       good
chromium@515148                          80.386 +- 67.0475       6       good
chromium@515148,catapult@a7fb6add75      80.0752 +- 65.1833      9       good
chromium@515148,catapult@b33d83ad5d      85.8151 +- 39.3361      6       good
chromium@515148,catapult@564e33d345      119.878 +- 13.7072      6       bad       <--
chromium@515148,catapult@c169bba255      109.609 +- 61.3751      14      bad
chromium@515149                          102.435 +- 85.1419      9       bad
chromium@515150                          111.819 +- 32.9156      6       bad
chromium@515152                          110.782 +- 70.8351      14      bad
chromium@515156                          113.894 +- 39.1431      9       bad
chromium@515164                          115.562 +- 47.7086      9       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=browse.news.qq v8.browsing_mobile

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8962315583595782480


For feedback, file a bug with component Speed>Bisection