https://chromeperf.appspot.com/buildbucket_job_status/9014033286242909424 for png decode regresssion at 387966 - 388001.

https://chromeperf.appspot.com/buildbucket_job_status/9014033183646302928 submitted for  jpeg improvement at 387392 - 387429.

===== BISECT JOB RESULTS =====
Status: completed


===== SUSPECTED CL(s) =====
Subject : cc: Disable image hijack canvas when tiles don't have images.
Author  : vmpstr
Commit description:
  
This patch disables the image hijack canvas whenever the tile being
rasterized does not have images. This also deletes a function that is
no longer being used.

R=enne
CQ_INCLUDE_TRYBOTS=tryserver.blink:linux_blink_rel

Review URL: https://codereview.chromium.org/1892573003

Cr-Commit-Position: refs/heads/master@{#387429}
Commit  : 8623c9c8b645083ce4951054f117d1f3d03083c2
Date    : Thu Apr 14 21:23:47 2016


===== TESTED REVISIONS =====
Revision         Mean     Std Dev   N  Good?
chromium@387391  79.3571  7.10729   5  good
chromium@387406  77.2595  0.596963  5  good
chromium@387416  77.9697  1.95906   5  good
chromium@387422  76.9948  0.615873  5  good
chromium@387426  76.2832  1.07859   5  good
chromium@387428  75.9412  1.09226   5  good
chromium@387429  71.5968  0.901492  5  bad    <--

Bisect job ran on: mac_retina_perf_bisect
Bug ID: 607925

Test Command: src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --also-run-disabled-tests image_decoding.image_decoding_measurement
Test Metric: energy_consumption_mwh/image_decoding.html?jpg
Relative Change: 9.78%
Score: 99.9

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/mac_retina_perf_bisect/builds/1268
Job details: https://chromeperf.appspot.com/buildbucket_job_status/9014033183646302928


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5840362506027008

| 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 Tests>AutoBisect.  Thank you!

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

Hi mek@chromium.org, the bisect results pointed to your CL below as possibly
causing a regression. Please have a look at this info and see whether
your CL be related.


===== BISECT JOB RESULTS =====
Status: completed


===== SUSPECTED CL(s) =====
Subject : Foreign fetch should not intercept same origin or main resource requests.
Author  : mek
Commit description:
  
As specified in step 4 and 9 of https://slightlyoff.github.io/ServiceWorker/spec/service_worker/index.html#on-foreign-fetch-request-algorithm

BUG= 540509 

Review URL: https://codereview.chromium.org/1870743002

Cr-Commit-Position: refs/heads/master@{#387982}
Commit  : b05fc6e9adea363eee39ae5e4de1db647b5de2b8
Date    : Mon Apr 18 19:26:28 2016


===== TESTED REVISIONS =====
Revision         Mean     Std Dev   N  Good?
chromium@387965  62.49    0.556806  8  good
chromium@387974  63.2094  0.73347   8  good
chromium@387978  63.3205  0.46027   8  good
chromium@387980  63.2545  0.590278  8  good
chromium@387981  63.3565  0.702929  8  good
chromium@387982  64.8136  0.702205  5  bad    <--
chromium@388001  64.6121  0.923686  5  bad

Bisect job ran on: mac_retina_perf_bisect
Bug ID: 607925

Test Command: src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --also-run-disabled-tests image_decoding.image_decoding_measurement
Test Metric: energy_consumption_mwh/image_decoding.html?webp
Relative Change: 3.79%
Score: 99.5

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/mac_retina_perf_bisect/builds/1267
Job details: https://chromeperf.appspot.com/buildbucket_job_status/9014033286242909424


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5340883679969280

| 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 Tests>AutoBisect.  Thank you!

Apologies, mek, we are just testing bisect, no action needed here.

This issue has been available for more than 365 days with no owner or cc list, so archiving this bug. Please re-open or file a new bug if this is still an issue.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot