All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=755617

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=50571d578fcbd928a03f1dff1d193fb17151f621265a51db37be4031f188ba3f


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

chromium-rel-mac12
chromium-rel-mac12-mini-8gb

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8971172872349820976

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

Suspected Commit
  Author : jbauman
  Commit : 5b05b9032e67ea278ae3a3d1eb2731d1dcdb68c5
  Date   : Thu Aug 10 06:02:54 2017
  Subject: Allow creating GLImage-backed textures with glTexStorage2D.

Bisect Details
  Configuration: mac_10_12_perf_bisect
  Benchmark    : smoothness.top_25_smooth
  Metric       : first_gesture_scroll_update_latency/https___www.google.com__hl_en_q_barack+obama
  Change       : 16.39% | 1.83611111111 -> 2.137

Revision             Result                   N
chromium@493190      1.83611 +- 0.486877      9      good
chromium@493260      1.77367 +- 0.179481      6      good
chromium@493295      1.76233 +- 0.200712      6      good
chromium@493300      1.74917 +- 0.142544      6      good
chromium@493301      1.82167 +- 0.260322      6      good
chromium@493302      2.18622 +- 0.67285       9      bad       <--
chromium@493304      2.31683 +- 1.2603        6      bad
chromium@493313      2.17317 +- 0.26836       6      bad
chromium@493330      2.137 +- 0.239867        9      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=https...www.google.com..hl.en.q.barack.obama smoothness.top_25_smooth

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8971172872349820976


For feedback, file a bug with component Speed>Bisection