All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=694629

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg-JnFpgoM


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

chromium-rel-mac12

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8987028919450834048

=== BISECT JOB RESULTS ===
Perf regression found but unable to narrow commit range

Build failures prevented the bisect from narrowing the range further.


Bisect Details
  Configuration: mac_10_12_perf_bisect
  Benchmark    : tab_switching.typical_25
  Metric       : idle_wakeups_total/idle_wakeups_total
  Change       : 2.89% | 2469.0 -> 2390.07142857

Suspected Commit Range
  11 commits in range
  https://chromium.googlesource.com/chromium/src/+log/0c4b1788e3e0010560d6a064433f4f99afae5fda..0a762e43411be0bd7426da0d749b7e49d4de47b3


Revision             Result                  N
chromium@450253      2469.0 +- 96.8401       6        good
chromium@450287      2483.67 +- 124.354      9        good
chromium@450304      2395.43 +- 720.336      14       good
chromium@450309      2323.07 +- 1444.64      14       good
chromium@450310      ---                     ---      build failure
---                  ---                     ---      too many build failures to list
chromium@450319      ---                     ---      build failure
chromium@450320      2390.07 +- 249.61       14       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 tab_switching.typical_25

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8987028919450834048

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5903179423678464


| 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!

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8986484190785306160

=== BISECT JOB RESULTS ===
NO Perf regression found

Bisect Details
  Configuration: mac_10_12_perf_bisect
  Benchmark    : tab_switching.typical_25
  Metric       : idle_wakeups_total/idle_wakeups_total

Revision             Result                  N
chromium@450253      2159.95 +- 273.783      21      good
chromium@450320      2067.0 +- 1195.62       21      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 tab_switching.typical_25

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8986484190785306160

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5025490642927616


| 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!

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8982659702290060544

=== BISECT JOB RESULTS ===
NO Perf regression found

Bisect Details
  Configuration: mac_10_12_perf_bisect
  Benchmark    : tab_switching.typical_25
  Metric       : idle_wakeups_total/idle_wakeups_total

Revision             Result                  N
chromium@450253      1270.84 +- 241.011      19      good
chromium@450320      1231.67 +- 271.278      18      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 tab_switching.typical_25

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8982659702290060544

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5025490642927616


| 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!

This alert was found before M-60 branched. Closing as WontFix as this is believed to either be invalid or non-reproducible.