All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=755181

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=d752aeefcfb755de0b45d15fdb8a4a3138131b9b15fc417c16386baa944ad65e


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

chromium-rel-mac11
chromium-rel-win10
chromium-rel-win7-dual
chromium-rel-win7-gpu-intel
chromium-rel-win7-gpu-nvidia
chromium-rel-win7-x64-dual
chromium-rel-win8-dual

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8971266833843565504

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

Hi hubbe@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 : Fredrik Hubinette
  Commit : 46c25f4aeea8ba4487d9104b0b7034c40631cbec
  Date   : Sat Aug 12 00:27:30 2017
  Subject: Revert "Add test and fixes for loading many videos on the same page."

Bisect Details
  Configuration: mac_10_11_perf_bisect
  Benchmark    : media.tough_video_cases_tbmv2
  Metric       : cpu_time_percentage_avg/video.html?src_garden2_10s.mp4_seek
  Change       : 56.26% | 0.487428383885 -> 0.76165817787

Revision             Result                     N
chromium@493879      0.487428 +- 0.0605632      6      good
chromium@493890      0.501498 +- 0.0982104      6      good
chromium@493896      0.490881 +- 0.073182       6      good
chromium@493897      0.791617 +- 0.114657       6      bad       <--
chromium@493898      0.790477 +- 0.124626       6      bad
chromium@493899      0.752884 +- 0.0960278      6      bad
chromium@493901      0.765119 +- 0.125265       6      bad
chromium@493922      0.777467 +- 0.13488        6      bad
chromium@493964      0.761658 +- 0.0938667      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=video.html.src.garden2.10s.mp4.seek media.tough_video_cases_tbmv2

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8971266833843565504


For feedback, file a bug with component Speed>Bisection

Interesting, but the CL is a revert, so marking this as WontFix.

 Issue 755176  has been merged into this issue.

 Issue 755184  has been merged into this issue.

 Issue 755178  has been merged into this issue.

 Issue 757319  has been merged into this issue.

 Issue 757321  has been merged into this issue.

 Issue 757311  has been merged into this issue.