All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=700560

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgtJzWoAsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg1OzK2QoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgtKqXvgkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgtOqhuQkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg1KeXoQsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgtOq1pAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg1Put-gsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg1ITT9wkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDglL-q5QsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg1MmWoAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDglK2FugkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg1IrnhwkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDglK2FugoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgtLi_ogkM


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

chromium-rel-mac-retina

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8985467744535458352

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

Hi sammc@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 : sammc
  Commit : 4ea3f616e30bd2c052b44e4455988b4362cbb0ec
  Date   : Thu Mar 09 02:45:03 2017
  Subject: Revert of Buffer 2 seconds of data in the ffmpeg demuxer. (patchset #3 id:40001 of https://codereview.chromium.org/2737653002/ )

Bisect Details
  Configuration: mac_retina_perf_bisect
  Benchmark    : media.tough_video_cases
  Metric       : energy_impact/video.html?src_crowd1080.mp4
  Change       : 0.41% | 761.132095238 -> 764.274095238

Revision             Result                  N
chromium@455646      761.132 +- 23.1789      21      good
chromium@455647      760.185 +- 8.93239      6       good
chromium@455648      766.492 +- 10.3662      14      bad       <--
chromium@455649      767.408 +- 11.1598      9       bad
chromium@455651      768.132 +- 10.4325      9       bad
chromium@455656      769.162 +- 13.2079      9       bad
chromium@455665      767.672 +- 10.4123      9       bad
chromium@455683      768.649 +- 11.2041      9       bad
chromium@455719      764.274 +- 80.142       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 --story-filter=video.html.src.crowd1080.mp4 media.tough_video_cases

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8985467744535458352

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5013748638547968


| 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!

That CL was a revert.