All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=772469

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=61ab094db3eb8b30b663ae5652927a40b0355dcee0fdeade1ab6585ce7b91386


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

android-webview-nexus6

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8966459832794390688

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

Suspected Commit
  Author : David Bokan
  Commit : 771bc4ee1d609083dd81daa0ee78229b49dfa270
  Date   : Thu Oct 05 18:39:46 2017
  Subject: Use viewport coords in gpuBenchmarking gestures

Bisect Details
  Configuration: android_webview_nexus6_aosp_perf_bisect
  Benchmark    : thread_times.tough_compositor_cases
  Metric       : mean_frame_time_renderer_compositor/mean_frame_time_renderer_compositor
  Change       : 32.18% | 21.3326062063 -> 28.1971916772

Revision             Result                    N
chromium@506783      21.3326 +- 0.197466       6      good
chromium@506801      21.2767 +- 0.0759003      6      good
chromium@506803      21.3044 +- 0.173975       6      good
chromium@506804      28.2531 +- 0.301918       6      bad       <--
chromium@506806      28.3194 +- 0.299535       6      bad
chromium@506810      28.259 +- 0.305655        6      bad
chromium@506819      28.1437 +- 0.0768793      6      bad
chromium@506854      28.1972 +- 0.267981       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 thread_times.tough_compositor_cases

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8966459832794390688


For feedback, file a bug with component Speed>Bisection