All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=774458

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=287495e43d01ed863992cd540be775e933a6f20434466ba2992354b1c354e059


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

android-nexus6

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8965847783050982096

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

Suspected Commit
  Author : Benedikt Meurer
  Commit : 08db4d7652967c1ed12450a73ff53f5d6bbf1fdf
  Date   : Mon Oct 02 12:35:05 2017
  Subject: [ic] Properly handle polymorphic symbol accesses.

Bisect Details
  Configuration: android_nexus6_perf_bisect
  Benchmark    : v8.browsing_mobile
  Metric       : memory:chrome:renderer_processes:reported_by_chrome:v8:heap:effective_size_avg/browse_shopping/browse_shopping_avito
  Change       : 15.54% | 27332432.8633 -> 31580130.9285

Revision                           Result                   N
chromium@505590                    27332433 +- 1259898      6      good
chromium@505719                    26715981 +- 2617734      6      good
chromium@505728                    27651450 +- 1286214      6      good
chromium@505730                    27039759 +- 1165442      6      good
chromium@505731                    27148363 +- 1826708      6      good
chromium@505731,v8@08db4d7652      31390832 +- 1279217      6      bad       <--
chromium@505731,v8@17d86d76fb      31240161 +- 1519606      6      bad
chromium@505731,v8@1fa0f9ba4c      31546759 +- 775096       6      bad
chromium@505732                    30765620 +- 1839331      6      bad
chromium@505736                    31019875 +- 1364878      6      bad
chromium@505752                    30253401 +- 1426505      6      bad
chromium@505784                    30823171 +- 1937757      6      bad
chromium@505848                    30649313 +- 2295801      6      bad
chromium@506105                    31580131 +- 2373149      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.shopping.avito 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/8965847783050982096


For feedback, file a bug with component Speed>Bisection