All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=722239

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg6vzDrAoM


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

android-webview-nexus6

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8979543255413991168

The roll includes an update of V8 to version 6.0.191.

There were confusing rolls in and out of Chromium, but it looks like the problem started after 6.0.189.

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

Hi rmcilroy@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 : Ross McIlroy
  Commit : 11a211ff1b81e8d83d1aa4898743c2efb89603bd
  Date   : Wed May 10 15:04:35 2017
  Subject: Reland: [TypeFeedbackVector] Store optimized code in the vector

Bisect Details
  Configuration: android_webview_nexus6_aosp_perf_bisect
  Benchmark    : speedometer
  Metric       : React-TodoMVC/React-TodoMVC
  Change       : 3.35% | 6893.09537037 -> 7123.92555556

Revision                           Result                  N
chromium@471271                    6893.1 +- 370.347       9      good
chromium@471279                    6797.4 +- 81.7404       6      good
chromium@471280                    6857.32 +- 105.022      6      good
chromium@471280,v8@5c66d6fcd4      6871.55 +- 142.09       6      good
chromium@471280,v8@cf37556f0e      6869.28 +- 59.5746      6      good
chromium@471280,v8@69c6970fae      6869.27 +- 153.451      6      good
chromium@471280,v8@2026d5cb79      6891.43 +- 194.036      6      good
chromium@471280,v8@93fff34eaa      6856.05 +- 222.663      6      good
chromium@471280,v8@11a211ff1b      7088.24 +- 111.07       6      bad       <--
chromium@471280,v8@f86985ad11      7159.31 +- 188.28       6      bad
chromium@471281                    7120.86 +- 201.294      6      bad
chromium@471283                    7099.78 +- 178.446      6      bad
chromium@471287                    7123.93 +- 200.002      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 speedometer

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8979543255413991168

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5819243628593152


| O O | Visit http://www.chromium.org/developers/speed-infra/perf-bug-faq
|  X  | for more information addressing perf regression bugs. For feedback,
| / \ | file a bug with component Speed>Bisection.  Thank you!

 Issue 722350  has been merged into this issue.

Fixed after the roll in r471865.