All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=781546

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=b856c63e4463e9a4cbec2148913c1601176cbe4d3f14195b1a6365250a8a0c63


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

chromium-rel-mac-retina

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8963833598785716928

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

Suspected Commit
  Author : Sunny Sachanandani
  Commit : d2e9756d46f6a324a1e98d3553eb045556a5f4af
  Date   : Mon Oct 30 20:45:44 2017
  Subject: cc: Use CHROMIUM_texture_storage_image for GMB backed texture resources.

Bisect Details
  Configuration: mac_retina_perf_bisect
  Benchmark    : media.desktop
  Metric       : memory:chrome:all_processes:reported_by_chrome:gpu:effective_size_avg/video.html?src_crowd2160.mp4
  Change       : 0.85% | 169417485.333 -> 167982349.333

Revision             Result                N
chromium@512454      169417485 +- 0.0      6      good
chromium@512551      169417485 +- 0.0      6      good
chromium@512599      169417485 +- 0.0      6      good
chromium@512611      169417485 +- 0.0      6      good
chromium@512614      169417485 +- 0.0      6      good
chromium@512615      167982349 +- 0.0      6      bad       <--
chromium@512616      167982349 +- 0.0      6      bad
chromium@512617      167982349 +- 0.0      6      bad
chromium@512623      167982349 +- 0.0      6      bad
chromium@512647      167982349 +- 0.0      6      bad
chromium@512839      167982349 +- 0.0      6      bad
chromium@513223      167982349 +- 0.0      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.crowd2160.mp4 media.desktop

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8963833598785716928


For feedback, file a bug with component Speed>Bisection