All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=776750

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=5dd4c6597f1ef9f9cd92af70732a23391780b7d4fe3ef97f4f278b76cb7647a1


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

android-webview-nexus5X
android-webview-nexus6

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8965206473356365120

=== BISECT JOB RESULTS ===
Perf regression found but unable to narrow commit range

Build failures prevented the bisect from narrowing the range further.


Bisect Details
  Configuration: android_webview_nexus6_aosp_perf_bisect
  Benchmark    : smoothness.gpu_rasterization.top_25_smooth
  Metric       : frame_times/http___sports.yahoo.com_
  Change       : 24.47% | 19.0490259008 -> 23.7101221973

Suspected Commit Range
  3 commits in range
  https://chromium.googlesource.com/chromium/src/+log/1313dbc33722906334359620de7109b67bdcce91..fadc26de4635da9d31ef25cb01b63187650a2895


Revision             Result                   N
chromium@508702      19.049 +- 0.594785       9        good
chromium@508733      18.9917 +- 0.839165      14       good
chromium@508749      19.1404 +- 1.08066       14       good
chromium@508752      18.9216 +- 1.94831       14       good
chromium@508754      19.0427 +- 1.93567       14       good
chromium@508755      ---                      ---      build failure
chromium@508756      ---                      ---      build failure
chromium@508757      18.5829 +- 2.30785       14       bad
chromium@508763      18.3893 +- 3.01237       14       bad
chromium@508823      23.7101 +- 7.82101       9        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 --story-filter=http...sports.yahoo.com. smoothness.gpu_rasterization.top_25_smooth

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8965206473356365120


For feedback, file a bug with component Speed>Bisection

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8964931117721806000

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

Suspected Commit
  Author : David Bokan
  Commit : b0d47f5f4d4b9717bfdd43ae6d40257235d0848f
  Date   : Fri Oct 13 16:49:07 2017
  Subject: Fix coordinate space issues in scroll.js

Bisect Details
  Configuration: android_webview_nexus6_aosp_perf_bisect
  Benchmark    : smoothness.gpu_rasterization.top_25_smooth
  Metric       : frame_times/http___sports.yahoo.com_
  Change       : 27.66% | 19.1048595699 -> 24.3899092809

Revision                                 Result                   N
chromium@508702                          19.1049 +- 0.402336      6       good
chromium@508763                          18.3371 +- 2.65551       9       good
chromium@508778                          18.648 +- 1.89786        9       good
chromium@508786                          18.9893 +- 1.68974       9       good
chromium@508788                          18.9576 +- 0.450448      6       good
chromium@508789                          19.3578 +- 6.06682       9       good
chromium@508789,catapult@b0d47f5f4d      24.1318 +- 8.97274       14      bad       <--
chromium@508789,catapult@dd5b39ac0c      24.1675 +- 2.17942       9       bad
chromium@508790                          24.0265 +- 3.71053       6       bad
chromium@508793                          23.2887 +- 7.4915        9       bad
chromium@508823                          24.3899 +- 1.64892       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 --story-filter=http...sports.yahoo.com. smoothness.gpu_rasterization.top_25_smooth

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8964931117721806000


For feedback, file a bug with component Speed>Bisection