All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=794545

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=89ab210100ce9c4385dbb4e6e1d54ccd7cb8156207f2cfa853ba4fa7051d37b4


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

android-nexus5

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8960317409847689616

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

Suspected Commit
  Author : Xianzhu Wang
  Commit : 94b89f4fe30c693692988e3360acf3c8952c532e
  Date   : Sun Dec 10 06:24:43 2017
  Subject: [SPv175/PE] SetLayerState for AncestorClippingMaskLayer and ChildClippingMaskLayer

Bisect Details
  Configuration: android_nexus5_perf_bisect
  Benchmark    : smoothness.key_mobile_sites_smooth
  Metric       : mean_input_event_latency/http___worldjournal.com_
  Change       : 28.20% | 22.5003333333 -> 28.8458333333

Revision             Result                  N
chromium@523016      22.5003 +- 3.45504      6      good
chromium@523018      23.2842 +- 5.23534      6      good
chromium@523019      21.9657 +- 1.76507      6      good
chromium@523020      28.8458 +- 2.88588      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=http...worldjournal.com. smoothness.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/8960317409847689616


For feedback, file a bug with component Speed>Bisection