All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=798269

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=05a0a4422b198936bd0379aaa9be64b29b9aab79b1db639b1ffdda8928d40445


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

android-nexus6

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8958529302919605856

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

Suspected Commit
  Author : Ali Ijaz Sheikh
  Commit : aefc8a315343b124f16a2cfdaab3b086629e145d
  Date   : Wed Dec 20 14:15:08 2017
  Subject: [heap] fix regression on thread_times.key_silk_cases

Bisect Details
  Configuration: android_nexus6_perf_bisect
  Benchmark    : v8.browsing_mobile
  Metric       : memory:chrome:renderer_processes:reported_by_chrome:v8:heap:effective_size_max/browse_chrome/browse_chrome_omnibox
  Change       : 19.93% | 15455087.3333 -> 18534689.3333

Revision                           Result                   N
chromium@525500                    15455087 +- 323387       6      good
chromium@525528                    15398952 +- 326748       6      good
chromium@525542                    15591652 +- 425685       6      good
chromium@525549                    15522679 +- 301457       6      good
chromium@525550                    15596907 +- 429952       6      good
chromium@525550,v8@aefc8a3153      18155819 +- 1640037      6      bad       <--
chromium@525550,v8@26e21fa67a      18024489 +- 1327094      6      bad
chromium@525550,v8@2d3eb1ba3e      17506078 +- 1325203      6      bad
chromium@525551                    18158679 +- 1749658      6      bad
chromium@525553                    18236589 +- 1498466      6      bad
chromium@525556                    18534689 +- 1175144      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=browse.chrome.omnibox 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/8958529302919605856


For feedback, file a bug with component Speed>Bisection