All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=747578

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=c54341fbfd18756b30d0eb99575e85837c068b12e1ac74c28a075f9a22038729


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

android-nexus5
android-nexus5X
android-nexus6

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8973425584544006576

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

Suspected Commit
  Author : Ken Rockot
  Commit : 474df01407e5d38c85364ae4d1709b8d9af16f16
  Date   : Wed Jul 12 13:28:56 2017
  Subject: Mojo C++ Bindings: Lazy Serialization

Bisect Details
  Configuration: android_nexus5_perf_bisect
  Benchmark    : thread_times.key_silk_cases
  Metric       : thread_IO_cpu_time_per_frame/thread_IO_cpu_time_per_frame
  Change       : 3.13% | 3.1878814116 -> 3.28782038682

Revision             Result                    N
chromium@485915      3.18788 +- 0.054924       6      good
chromium@485929      3.16642 +- 0.0508184      6      good
chromium@485934      3.14876 +- 0.0321753      6      good
chromium@485935      3.26102 +- 0.0303853      6      bad       <--
chromium@485936      3.2688 +- 0.0249826       6      bad
chromium@485938      3.25495 +- 0.0742266      9      bad
chromium@485960      3.26452 +- 0.0452183      6      bad
chromium@486005      3.28782 +- 0.040175       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 thread_times.key_silk_cases

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8973425584544006576


For feedback, file a bug with component Speed>Bisection