All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=787454

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=cd4992465dbe6ae32c7488639f6600b91d0b8b946b08e4b01310304bba282aad


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

android-nexus5
android-nexus7v2
android-one
android-webview-nexus6

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8962310149103524672

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

Suspected Commit
  Author : Michael Starzinger
  Commit : 23883b85f21a2c61515cb57064b19901ae666884
  Date   : Thu Nov 09 09:31:15 2017
  Subject: [deoptimizer] Turn deopt entries into immovable Code objects.

Bisect Details
  Configuration: android_webview_nexus6_aosp_perf_bisect
  Benchmark    : v8.browsing_mobile
  Metric       : v8-gc-total_max/browse_news/browse_news_qq
  Change       : 91.97% | 13.4006666667 -> 25.7258333333

Revision                           Result                  N
chromium@515252                    13.4007 +- 14.228       9      good
chromium@515279                    13.0193 +- 6.15314      6      good
chromium@515286                    10.835 +- 1.91562       6      good
chromium@515288                    12.1887 +- 4.13161      6      good
chromium@515289                    13.3227 +- 3.50347      6      good
chromium@515289,v8@23883b85f2      25.274 +- 2.06288       6      bad       <--
chromium@515289,v8@b9c9932202      24.248 +- 2.07005       6      bad
chromium@515289,v8@bc4bd08e63      25.0325 +- 4.48106      6      bad
chromium@515289,v8@9eb92da618      26.5583 +- 4.97181      6      bad
chromium@515290                    24.4447 +- 3.50649      6      bad
chromium@515293                    25.4417 +- 2.02342      6      bad
chromium@515306                    25.8 +- 7.24933         6      bad
chromium@515359                    25.7258 +- 4.1103       6      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/8962310149103524672


For feedback, file a bug with component Speed>Bisection