All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=749339

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=180f4ac03ae8eca65b1ec50b3844797f999e19f1120649a30f2b93c38cdd95d9


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

chromium-rel-mac12

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8972961212684676576

=== BISECT JOB RESULTS ===
Perf regression found but unable to narrow commit range

Build failures prevented the bisect from narrowing the range further.


Bisect Details
  Configuration: mac_10_12_perf_bisect
  Benchmark    : blink_perf.layout
  Metric       : large-table-with-collapsed-borders-and-colspans-wider-than-table/large-table-with-collapsed-borders-and-colspans-wider-than-table
  Change       : 2.38% | 235.045214286 -> 238.181666667

Suspected Commit Range
  5 commits in range
  https://chromium.googlesource.com/chromium/src/+log/d1fbfe0224ae4ae7812c524e6dacebe647d1efc6..ca58856ddbdfbb75d80c657838e5c9f9d327b174


Revision             Result                  N
chromium@488889      235.045 +- 18.8607      14       good
chromium@488890      ---                     ---      build failure
chromium@488891      ---                     ---      build failure
chromium@488892      ---                     ---      build failure
chromium@488893      ---                     ---      build failure
chromium@488894      235.849 +- 9.947        14       bad
chromium@488899      238.182 +- 18.4506      6        bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests blink_perf.layout

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8972961212684676576


For feedback, file a bug with component Speed>Bisection