All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=760153

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=9b63718ca08d227076f2294220b735770828790039bdd34cea12e7f2503017b6


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

android-nexus5
android-nexus5X
android-webview-nexus6

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8969912493947083024

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

Suspected Commit
  Author : Khushal
  Commit : 4ad05f3ae24fedcb1fc0438787d2ba4a5c61e520
  Date   : Thu Aug 17 23:13:43 2017
  Subject: cc: Use src_rect for checker-imaging size veto.

Bisect Details
  Configuration: android_nexus5X_perf_bisect
  Benchmark    : thread_times.key_mobile_sites_smooth
  Metric       : thread_raster_cpu_time_per_frame/http___slashdot.org_
  Change       : 37.18% | 0.409246172877 -> 0.561395395441

Revision             Result                      N
chromium@495360      0.409246 +- 0.0161072       6      good
chromium@495371      0.407001 +- 0.0211142       6      good
chromium@495372      0.559913 +- 0.0213284       6      bad       <--
chromium@495373      0.560963 +- 0.021579        6      bad
chromium@495374      0.564597 +- 0.0115265       6      bad
chromium@495376      0.561467 +- 0.028199        6      bad
chromium@495381      0.565379 +- 0.0109384       6      bad
chromium@495401      0.56439 +- 0.0226455        6      bad
chromium@495442      0.571392 +- 0.0155265       6      bad
chromium@495524      0.561395 +- 0.00803267      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...slashdot.org. thread_times.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/8969912493947083024


For feedback, file a bug with component Speed>Bisection