All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=768549

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=c3c474857bf88141cc2fd6025ea7889da856d27882282f6f5c02352f9c67c99f


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

android-nexus7v2
android-webview-nexus5X

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8967445298228567040

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

Suspected Commit
  Author : Brian White
  Commit : 7ac4e75787ae3b44a33026e4e3671410c81a273c
  Date   : Sun Sep 24 04:33:45 2017
  Subject: Validate histograms around IPC calls on Android.

Bisect Details
  Configuration: android_webview_arm64_aosp_perf_bisect
  Benchmark    : blink_perf.owp_storage
  Metric       : IDBFactory::open/IDBFactory::open
  Change       : 18.37% | 4.38625833333 -> 5.19195833332

Revision             Result                   N
chromium@503949      4.38626 +- 0.131819      6      good
chromium@503950      4.35518 +- 0.106707      6      good
chromium@503951      5.19196 +- 0.1349        6      bad       <--

Please refer to the following doc on diagnosing blink_perf regressions:
  https://chromium.googlesource.com/chromium/src/+/master/docs/speed/benchmark_harnesses/blink_perf.md

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 blink_perf.owp_storage

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8967445298228567040


For feedback, file a bug with component Speed>Bisection