All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=706931

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg7Pm-iAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg7PnF6QoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg7IyYnAsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg7Na8jQgM


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

chromium-rel-mac11

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8983672000864696736

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

Hi sdy@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 : sdy
  Commit : 4f561865ff1add5ad5367d3c15f98a8fba1dff2a
  Date   : Thu Mar 23 00:14:07 2017
  Subject: [Mac] Turn on Auto Layout for browser windows.

Bisect Details
  Configuration: mac_10_11_perf_bisect
  Benchmark    : startup.warm.blank_page
  Metric       : first_non_empty_paint_time/first_non_empty_paint_time
  Change       : 21.73% | 639.666666667 -> 778.666666667

Revision             Result                  N
chromium@458817      639.667 +- 16.8918      6      good
chromium@458893      648.833 +- 32.3239      6      good
chromium@458931      652.0 +- 18.8149        6      good
chromium@458941      648.833 +- 20.8046      6      good
chromium@458944      652.5 +- 26.1438        6      good
chromium@458945      790.167 +- 16.1503      6      bad       <--
chromium@458946      761.833 +- 108.622      6      bad
chromium@458950      782.667 +- 27.8807      6      bad
chromium@458968      778.667 +- 34.8616      6      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --pageset-repeat=2 --also-run-disabled-tests startup.warm.blank_page

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8983672000864696736

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5274127289548800


| 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!

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/8b7a7716bedcc5120cafc3df7ecb61aa542a1089

commit 8b7a7716bedcc5120cafc3df7ecb61aa542a1089
Author: sdy <sdy@chromium.org>
Date: Mon Apr 10 17:35:04 2017

Turn off Auto Layout pending investigation of a performance regression.

BUG= 706931 ,  695577 

Review-Url: https://codereview.chromium.org/2811793002
Cr-Commit-Position: refs/heads/master@{#463311}

[modify] https://crrev.com/8b7a7716bedcc5120cafc3df7ecb61aa542a1089/chrome/browser/ui/cocoa/browser_window_controller_unittest.mm
[modify] https://crrev.com/8b7a7716bedcc5120cafc3df7ecb61aa542a1089/chrome/browser/ui/cocoa/tabs/tab_window_controller.mm