Using the per-revision bisect providing the bisect results,
Good Build : 56.0.2913.0 (Revision:430459)
Bad Build : 56.0.2914.0 (Revision:430837)

You are probably looking for a change made after 430815 (known good), but no later than 430816 (first known bad).

CHANGELOG URL:

The script might not always return single CL as suspect as some perf builds might get missing due to failure.
  https://chromium.googlesource.com/chromium/src/+log/4d77b0e6f0b1ee3fc3b9a1ddb268d86f7c29f065..8c4965f69d6de2d3c4ed9c6cd5b2ccbee1667cad

From the CL above, assigning the issue to the concern owner 

@dpapad - Could you please check whether this is caused with respect to your change, if not please help us in assigning it to the right owner.

Review-Url: https://codereview.chromium.org/2365453002

Thanks!

Issue os observed on Ubuntu 14.04 OS as well.

Thanks.!

The ripple is too big to fit inside the row it is displayed. This was happening even before https://codereview.chromium.org/2365453002, (see attached screenshot).

Looking into this issue, and it seems like checkbox's ripple size is hardcoded to be 3*checkbox-size in Polymer source. I'm asking for Polymer team's thoughts on making that configurable; will get back to this once I hear back.

Just for update, Still able to reproduce the issue on Ubuntu 14.04,Win 10.0 & Mac 10.11.6 using latest chrome canary version 57.0.2935.0.

scottchen@ Could you please look into this issue.

Thanks!

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/7383f00039f3d3a10e76e714e51b69e9b9750309

commit 7383f00039f3d3a10e76e714e51b69e9b9750309
Author: dpapad <dpapad@chromium.org>
Date: Wed Nov 30 02:04:43 2016

MD Settings: roll paper-radio-button, 1.2.1 -> 1.3.1

BUG= 664433 , 668021 
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:closure_compilation

Review-Url: https://codereview.chromium.org/2526053002
Cr-Commit-Position: refs/heads/master@{#435124}

[modify] https://crrev.com/7383f00039f3d3a10e76e714e51b69e9b9750309/chrome/browser/resources/md_downloads/vulcanized.html
[modify] https://crrev.com/7383f00039f3d3a10e76e714e51b69e9b9750309/chrome/browser/resources/md_history/app.vulcanized.html
[modify] https://crrev.com/7383f00039f3d3a10e76e714e51b69e9b9750309/chrome/browser/resources/md_history/lazy_load.vulcanized.html
[modify] https://crrev.com/7383f00039f3d3a10e76e714e51b69e9b9750309/third_party/polymer/v1_0/PRESUBMIT.py
[modify] https://crrev.com/7383f00039f3d3a10e76e714e51b69e9b9750309/third_party/polymer/v1_0/bower.json
[modify] https://crrev.com/7383f00039f3d3a10e76e714e51b69e9b9750309/third_party/polymer/v1_0/components-chromium/paper-radio-button/bower.json
[modify] https://crrev.com/7383f00039f3d3a10e76e714e51b69e9b9750309/third_party/polymer/v1_0/components-chromium/paper-radio-button/paper-radio-button-extracted.js
[modify] https://crrev.com/7383f00039f3d3a10e76e714e51b69e9b9750309/third_party/polymer/v1_0/components-chromium/paper-radio-button/paper-radio-button.html
[modify] https://crrev.com/7383f00039f3d3a10e76e714e51b69e9b9750309/third_party/polymer/v1_0/components_summary.txt
[modify] https://crrev.com/7383f00039f3d3a10e76e714e51b69e9b9750309/third_party/web-animations-js/sources/.bower.json

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/2c6ab947d7b070c009ee5199e8e447757d8c0179

commit 2c6ab947d7b070c009ee5199e8e447757d8c0179
Author: scottchen <scottchen@chromium.org>
Date: Thu Dec 01 21:33:48 2016

MD Settings: Reduce paper-radio-button's ripple size.

paper-radio-button's ripple size is changed to 40px to be consistent with the default ripple size as paper-checkbox. This size reduction will prevent it from going out of its container's bounds.

BUG= 664433 
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:closure_compilation

Review-Url: https://codereview.chromium.org/2539353003
Cr-Commit-Position: refs/heads/master@{#435720}

[modify] https://crrev.com/2c6ab947d7b070c009ee5199e8e447757d8c0179/chrome/browser/resources/settings/settings_vars_css.html