All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=771203

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=1a8f00a6fcec0173843e158b22caa88ae1e0ecbac8d08fbc4adf0fdcb6d8a261


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

android-webview-nexus5X

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8966740773990963920

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

Suspected Commit
  Author : Andrew Grieve
  Commit : 8a218af5c68598645675d76980984777c8429bb3
  Date   : Tue Sep 26 04:31:21 2017
  Subject: Android: Roll ndk to add CHROMIUM_CXX_TWEAK_INLINES

Bisect Details
  Configuration: android_webview_arm64_aosp_perf_bisect
  Benchmark    : rasterize_and_record_micro.top_25
  Metric       : record_time/file___static_top_25_booking.html
  Change       : 7.81% | 0.196333333333 -> 0.211666666667

Revision             Result                      N
chromium@504278      0.196333 +- 0.00627163      6      good
chromium@504281      0.193833 +- 0.00168325      6      good
chromium@504282      0.194333 +- 0.00439697      6      good
chromium@504283      0.2115 +- 0.00122474        6      bad       <--
chromium@504284      0.214 +- 0.0111355          6      bad
chromium@504289      0.212 +- 0.00316228         6      bad
chromium@504300      0.212833 +- 0.00899074      6      bad
chromium@504321      0.211667 +- 0.0033665       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.booking.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/8966740773990963920


For feedback, file a bug with component Speed>Bisection