All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=744740

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=e42afd6e6e63f2516397195df65eaa104e684c4cc62c68d72effee9cabf62bf8


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

chromium-rel-mac11-air

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8973798432285416336

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

Hi sunnyps@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 : Sunny Sachanandani
  Commit : 057d5553e4524a7726b2e7d5ecfef85289379000
  Date   : Fri Jul 14 04:07:29 2017
  Subject: cc: Dump more state in begin main frame hang crash key.

Bisect Details
  Configuration: mac_air_perf_bisect
  Benchmark    : blink_perf.parser
  Metric       : innerHTML-setter/innerHTML-setter
  Change       : 9.96% | 821.229104521 -> 739.396552115

Revision             Result                  N
chromium@486665      821.229 +- 35.0488      6      good
chromium@486669      783.561 +- 19.3567      6      good
chromium@486670      726.967 +- 26.0218      6      bad       <--
chromium@486671      723.231 +- 37.965       6      bad
chromium@486672      726.114 +- 32.7621      6      bad
chromium@486678      727.167 +- 38.9057      6      bad
chromium@486690      739.087 +- 19.6461      6      bad
chromium@486715      739.397 +- 18.1917      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 blink_perf.parser

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8973798432285416336


For feedback, file a bug with component Speed>Bisection

 Issue 744732  has been merged into this issue.

 Issue 744741  has been merged into this issue.

 Issue 746246  has been merged into this issue.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/a1efdc3eec28f62fab81f4d9f6c224302675a7d5

commit a1efdc3eec28f62fab81f4d9f6c224302675a7d5
Author: Sunny Sachanandani <sunnyps@chromium.org>
Date: Thu Jul 20 00:18:59 2017

cc: Remove crash logging for BeginMainFrame hang.

This regressed some benchmarks and also accounts for a few percent of
power consumption.

Revert "cc: Add crash key for debugging BeginMainFrame renderer hang."

This reverts commit 7a4f2242badc95b109bb551e2ec1ebcebc2ff0d2.

Revert "cc: Dump more state in begin main frame hang crash key."

This reverts commit 057d5553e4524a7726b2e7d5ecfef85289379000.

TBR=brianderson,rsesek,alokp,scottmg,brucedawson
BUG=622080, 744740 , 742471 

Cq-Include-Trybots: master.tryserver.blink:linux_trusty_blink_rel
Change-Id: Ib96e7ca083c4ce3a22890b8d6e822f57dd391ef7
Reviewed-on: https://chromium-review.googlesource.com/578066
Commit-Queue: Sunny Sachanandani <sunnyps@chromium.org>
Reviewed-by: Bruce Dawson <brucedawson@chromium.org>
Reviewed-by: Sunny Sachanandani <sunnyps@chromium.org>
Cr-Commit-Position: refs/heads/master@{#488060}
[modify] https://crrev.com/a1efdc3eec28f62fab81f4d9f6c224302675a7d5/android_webview/common/crash_reporter/crash_keys.cc
[modify] https://crrev.com/a1efdc3eec28f62fab81f4d9f6c224302675a7d5/cc/scheduler/scheduler.cc
[modify] https://crrev.com/a1efdc3eec28f62fab81f4d9f6c224302675a7d5/cc/scheduler/scheduler.h
[modify] https://crrev.com/a1efdc3eec28f62fab81f4d9f6c224302675a7d5/cc/scheduler/scheduler_state_machine.cc
[modify] https://crrev.com/a1efdc3eec28f62fab81f4d9f6c224302675a7d5/cc/scheduler/scheduler_state_machine.h
[modify] https://crrev.com/a1efdc3eec28f62fab81f4d9f6c224302675a7d5/chrome/app/chrome_crash_reporter_client_win.cc
[modify] https://crrev.com/a1efdc3eec28f62fab81f4d9f6c224302675a7d5/chrome/common/crash_keys.cc
[modify] https://crrev.com/a1efdc3eec28f62fab81f4d9f6c224302675a7d5/chrome/common/crash_keys.h
[modify] https://crrev.com/a1efdc3eec28f62fab81f4d9f6c224302675a7d5/chromecast/crash/cast_crash_keys.cc