All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=750281

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=b8d64bd90ba5a8d1501caf551a401053614151be6702df53cce99c92c4a2e861


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

chromium-rel-win10
chromium-rel-win7-dual
chromium-rel-win7-gpu-intel
chromium-rel-win8-dual

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8972801704812213536

=== BISECT JOB RESULTS ===
Perf regression found with culprit

Suspected Commit
  Author : Geoff Lang
  Commit : 65d1cd6e7454a3fd383d0deeaaad67918f97be3b
  Date   : Tue Jul 25 17:34:04 2017
  Subject: Revert "Lazily create shader translators and implement glReleaseShaderCompiler"

Bisect Details
  Configuration: winx64_10_perf_bisect
  Benchmark    : media.tough_video_cases_tbmv2
  Metric       : memory:chrome:all_processes:reported_by_chrome:malloc:effective_size_avg/video.html?src_tulip2.mp3_type_audio
  Change       : 5.17% | 12762036.0 -> 13421445.6667

Revision             Result                   N
chromium@489334      12762036 +- 60158.9      6      good
chromium@489346      12750576 +- 67730.4      6      good
chromium@489352      12759489 +- 44981.6      6      good
chromium@489353      12761736 +- 79924.1      6      good
chromium@489354      13411072 +- 87337.1      6      bad       <--
chromium@489355      13416545 +- 41551.4      6      bad
chromium@489358      13406930 +- 66190.0      6      bad
chromium@489382      13411487 +- 37379.4      6      bad
chromium@489429      13421446 +- 52485.9      6      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=release_x64 --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=video.html.src.tulip2.mp3.type.audio 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/8972801704812213536


For feedback, file a bug with component Speed>Bisection