All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=755283

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=fe52e4e934e391fe8f8b055f5b03da268a4ed34fc55e43919458604ad26523c3


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

chromium-rel-mac-retina
chromium-rel-mac11
chromium-rel-mac11-air
chromium-rel-mac11-pro
chromium-rel-mac12
chromium-rel-mac12-mini-8gb
win-high-dpi

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8971254192927246016

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

Hi ccameron@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 : ccameron chromium
  Commit : 28e0a3c183499e50b1b89231d4ed40bafb8883fe
  Date   : Fri Aug 11 04:59:46 2017
  Subject: Revert "Ensure overlapping compositor locks can time out"

Bisect Details
  Configuration: mac_pro_perf_bisect
  Benchmark    : loading.desktop
  Metric       : timeToFirstContentfulPaint_avg/pcv1-warm/uol.com.br
  Change       : 39.39% | 254.688166667 -> 355.017166667

Revision             Result                  N
chromium@493544      254.688 +- 10.9745      6      good
chromium@493609      266.268 +- 59.9897      6      good
chromium@493641      257.659 +- 30.8749      6      good
chromium@493657      257.067 +- 7.40682      6      good
chromium@493665      251.255 +- 12.305       6      good
chromium@493669      252.771 +- 5.62158      6      good
chromium@493670      259.972 +- 26.5091      6      good
chromium@493671      365.151 +- 12.0192      6      bad       <--
chromium@493673      355.017 +- 12.9237      6      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=uol.com.br loading.desktop

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8971254192927246016


For feedback, file a bug with component Speed>Bisection

 Issue 755609  has been merged into this issue.

ccameron, should this be WontFix because the CL was a revert?