All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=751992

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=3bfa1a4380b4c5d90206eff2a765cceeac0686da99a60f47ac32305fc83affd0


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

android-nexus7v2

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8972297499520245792

=== Auto-CCing suspected CL author mtklein@chromium.org ===

Hi mtklein@chromium.org, the bisect results pointed to your CL, please take a look at the
results.


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

Suspected Commit
  Author : Mike Klein
  Commit : 5f9b59b52db2b9a11d41bb7fa93ec5e5d6104236
  Date   : Sat Jul 29 12:28:32 2017
  Subject: use new Stage ABI for ARMv7 too

Bisect Details
  Configuration: android_nexus7_perf_bisect
  Benchmark    : smoothness.sync_scroll.key_mobile_sites_smooth
  Metric       : mean_input_event_latency/http___cuteoverload.com
  Change       : 64.87% | 198.787666667 -> 69.8323333333

Revision                             Result                  N
chromium@490659                      198.788 +- 81.0643      6      good
chromium@490660                      214.816 +- 51.3716      6      good
chromium@490660,skia@5f9b59b52d      76.2652 +- 7.62774      6      bad       <--
chromium@490661                      72.9852 +- 16.8659      6      bad
chromium@490663                      74.8418 +- 18.1713      6      bad
chromium@490667                      72.0987 +- 15.6584      6      bad
chromium@490675                      69.8323 +- 12.9982      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...cuteoverload.com smoothness.sync_scroll.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/8972297499520245792


For feedback, file a bug with component Speed>Bisection

Looks like this was expected, it's fixing  crbug.com/747873