All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=792025

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=018961c8840085f2978ff74b31f1408d597844cbe40a200def4d2a1a82e9f8b7


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

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

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8961037646689030880

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

Suspected Commit
  Author : Tsuyoshi Horo
  Commit : e9cdaa227686d4e995569173d451cab0767ac48f
  Date   : Mon Nov 27 09:57:08 2017
  Subject: Add PWAFullCodeCache to fieldtrial_testing_config.json

Bisect Details
  Configuration: android_nexus5X_perf_bisect
  Benchmark    : system_health.common_mobile
  Metric       : cpu_time_percentage_avg/load_news/load_news_washingtonpost
  Change       : 4.40% | 0.313347695251 -> 0.327119713935

Revision             Result                      N
chromium@519233      0.313348 +- 0.00720041      6      good
chromium@519252      0.305737 +- 0.0173627       6      good
chromium@519257      0.309894 +- 0.0150676       6      good
chromium@519260      0.310774 +- 0.00971776      6      good
chromium@519261      0.323142 +- 0.0101474       6      bad       <--
chromium@519262      0.327799 +- 0.0149209       6      bad
chromium@519271      0.32712 +- 0.00969231       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=load.news.washingtonpost system_health.common_mobile

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8961037646689030880


For feedback, file a bug with component Speed>Bisection