All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=783773

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=1469e4dc683b482f978714b5a9e463e60ec249a9588ee2f6c75ab88a9a858879


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

android-nexus6
android-nexus7v2

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8963304407087485472

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

Suspected Commit
  Author : Caleb Rouleau
  Commit : 5daa21ce99f8f70abe1202689a510d9f03e5a3e1
  Date   : Wed Nov 08 23:25:07 2017
  Subject: Have pages edit grouping keys themselves.

Bisect Details
  Configuration: android_nexus7_perf_bisect
  Benchmark    : loading.mobile
  Metric       : timeToFirstContentfulPaint_avg/Regular-3G/Dawn
  Change       : 54.90% | 3187.8205 -> 1437.805

Revision             Result                  N
chromium@514954      3187.82 +- 853.526      6      good
chromium@514983      2957.99 +- 240.144      6      good
chromium@514998      3205.87 +- 867.333      6      good
chromium@514999      1487.81 +- 257.59       6      bad       <--
chromium@515000      1537.04 +- 303.541      6      bad
chromium@515002      1558.66 +- 180.933      6      bad
chromium@515005      1452.14 +- 323.81       6      bad
chromium@515012      1497.01 +- 332.811      6      bad
chromium@515069      1437.8 +- 286.682       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=Dawn loading.mobile

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8963304407087485472


For feedback, file a bug with component Speed>Bisection