All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=718753

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg8vPRsQoM


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

chromium-rel-mac12

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8980446109802960688

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8980446098134558592

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

Suspected Commit
  Author : zakerinasab
  Commit : 4c4a925b1a047a296b7962566ff63918f3eba1c4
  Date   : Tue May 02 20:34:28 2017
  Subject: Add performance test for ImageData.dataUnion

Bisect Details
  Configuration: mac_10_12_perf_bisect
  Benchmark    : blink_perf.canvas
  Metric       : drawimage-not-pixelaligned/drawimage-not-pixelaligned
  Change       : 83.17% | 11565.2238938 -> 1945.9245986

Revision             Result                  N
chromium@468707      11565.2 +- 340.022      6      good
chromium@468758      11524.2 +- 675.534      6      good
chromium@468762      11651.8 +- 226.437      6      good
chromium@468763      11539.0 +- 724.4        6      good
chromium@468764      1934.3 +- 48.7479       6      bad       <--
chromium@468765      1918.32 +- 110.974      6      bad
chromium@468771      1939.94 +- 36.4335      6      bad
chromium@468784      1932.01 +- 21.4995      6      bad
chromium@468809      1945.92 +- 11.0074      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 blink_perf.canvas

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8980446109802960688

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5801773865893888


| 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!

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

Suspected Commit
  Author : zakerinasab
  Commit : 4c4a925b1a047a296b7962566ff63918f3eba1c4
  Date   : Tue May 02 20:34:28 2017
  Subject: Add performance test for ImageData.dataUnion

Bisect Details
  Configuration: mac_10_12_perf_bisect
  Benchmark    : blink_perf.canvas
  Metric       : drawimage-not-pixelaligned/drawimage-not-pixelaligned
  Change       : 83.28% | 11636.0766588 -> 1945.17499882

Revision             Result                  N
chromium@468707      11636.1 +- 171.045      6      good
chromium@468758      11699.8 +- 411.659      6      good
chromium@468762      11797.9 +- 155.355      6      good
chromium@468763      11716.6 +- 218.225      6      good
chromium@468764      1942.25 +- 17.0463      6      bad       <--
chromium@468765      1931.09 +- 51.8753      6      bad
chromium@468771      1948.02 +- 13.8307      6      bad
chromium@468784      1931.17 +- 38.1621      6      bad
chromium@468809      1945.17 +- 10.5763      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 blink_perf.canvas

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8980446098134558592

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5831075793731584


| 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!