All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=747874

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=55b33ad31880a5594f66aeb85aa5601369c7cf5fc8f8501e517c287d042726df


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

android-webview-nexus5X

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8973192863162718480

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

Suspected Commit
  Author : Florin Malita
  Commit : c785be2815a779a528834a06e2e4d00d9fe3dfce
  Date   : Thu Jul 20 22:06:51 2017
  Subject: Enable Skia rasterpipeline for tiling

Bisect Details
  Configuration: android_webview_arm64_aosp_perf_bisect
  Benchmark    : smoothness.sync_scroll.key_mobile_sites_smooth
  Metric       : frame_times/http___cuteoverload.com
  Change       : 14.02% | 18.1231458771 -> 20.664885729

Revision             Result                   N
chromium@488405      18.1231 +- 0.785837      6      good
chromium@488423      18.3495 +- 0.683018      6      good
chromium@488428      18.3729 +- 0.6734        6      good
chromium@488430      18.4845 +- 1.01599       6      good
chromium@488431      21.0417 +- 1.01739       6      bad       <--
chromium@488432      20.6828 +- 1.41711       6      bad
chromium@488441      21.2037 +- 1.48207       6      bad
chromium@488477      20.6649 +- 1.28774       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=http...cuteoverload.com smoothness.sync_scroll.key_mobile_sites_smooth

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8973192863162718480


For feedback, file a bug with component Speed>Bisection