All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=763870

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=475fb9d8529a838f7e4d428ebcea8558f7a70d889aed9ac209d9030694129e65


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

android-nexus6
android-nexus7v2
android-webview-nexus6
chromium-rel-mac12

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8968752081795736656

=== Auto-CCing suspected CL author herb@google.com ===

Hi herb@google.com, 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 : Herb Derby
  Commit : bf13c2bc8e5d9372c0ce50ef4637c7acaec3d401
  Date   : Fri Sep 08 23:26:09 2017
  Subject: Use interpolation for small radii.

Bisect Details
  Configuration: android_webview_nexus6_aosp_perf_bisect
  Benchmark    : rasterize_and_record_micro.top_25
  Metric       : rasterize_time/file___static_top_25_googleplus.html
  Change       : 11.27% | 37.8855 -> 42.1545

Revision             Result                   N
chromium@500724      37.8855 +- 0.59479       6      good
chromium@500732      38.1055 +- 0.739717      6      good
chromium@500734      38.2738 +- 0.452114      6      good
chromium@500735      38.1173 +- 0.606964      6      good
chromium@500736      42.4113 +- 0.640972      6      bad       <--
chromium@500739      42.2048 +- 0.321874      6      bad
chromium@500754      42.1232 +- 0.540673      6      bad
chromium@500783      42.1545 +- 0.347784      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=file...static.top.25.googleplus.html rasterize_and_record_micro.top_25

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8968752081795736656


For feedback, file a bug with component Speed>Bisection