All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=776365

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=c2f3aec23ea3661e86583a698bce8445ab34dda20823133259c1755fe287e4f1


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

android-nexus6

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8965296194693208544

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

Suspected Commit
  Author : Khushal
  Commit : 051a012c57a3fdfd6c933ec3df1c0e60d247a73a
  Date   : Fri Oct 06 04:42:46 2017
  Subject: perf: Enable field trial testing for image animations in cc.

Bisect Details
  Configuration: android_nexus6_perf_bisect
  Benchmark    : thread_times.key_mobile_sites_smooth
  Metric       : thread_raster_cpu_time_per_frame/http___www.boingboing.net
  Change       : 61.38% | 0.754698691971 -> 1.21794395603

Revision             Result                     N
chromium@506949      0.754699 +- 0.020725       6      good
chromium@506963      0.761455 +- 0.0272652      6      good
chromium@506967      0.75801 +- 0.0430105       6      good
chromium@506968      0.766057 +- 0.03945        6      good
chromium@506969      1.20678 +- 0.0372175       6      bad       <--
chromium@506970      1.20537 +- 0.0239891       6      bad
chromium@506976      1.19825 +- 0.0756095       6      bad
chromium@507002      1.21794 +- 0.0162578       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...www.boingboing.net 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/8965296194693208544


For feedback, file a bug with component Speed>Bisection