All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=777405

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=6d0c97e940ddb017d6d6fc5c7e534a6dbcee9c69aba01968050f5c170d660a0a


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

android-webview-nexus5X

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8964938961057302800

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

Suspected Commit
  Author : Yi Gu
  Commit : bf1ce6b9e9cffee8a73f4cf3bc8658d0de2e7924
  Date   : Thu Oct 19 16:26:20 2017
  Subject: Remove the feature SkipCompositingSmallScrollers

Bisect Details
  Configuration: android_webview_arm64_aosp_perf_bisect
  Benchmark    : thread_times.key_silk_cases
  Metric       : thread_renderer_compositor_cpu_time_per_frame/http___jsfiddle.net_3yDKh_16_show_
  Change       : 8.26% | 2.86111904762 -> 3.09751199583

Revision             Result                    N
chromium@510099      2.86112 +- 0.039884       6      good
chromium@510101      2.86743 +- 0.0347507      6      good
chromium@510102      3.08712 +- 0.0624627      6      bad       <--
chromium@510103      3.09146 +- 0.0455953      6      bad
chromium@510106      3.0953 +- 0.0510227       6      bad
chromium@510112      3.0883 +- 0.0483374       6      bad
chromium@510124      3.11105 +- 0.042729       6      bad
chromium@510148      3.09751 +- 0.0491738      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...jsfiddle.net.3yDKh.16.show. 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/8964938961057302800


For feedback, file a bug with component Speed>Bisection