Using the per-revision bisect providing the bisect results,
Good build:55.0.2863.0(Revision: 419330).
Bad build: 55.0.2864.0 (Revision: 419385).

You are probably looking for a change made after 419344 (known good), but no later than 419345 (first known bad).

CHANGELOG URL:
-----------------
https://chromium.googlesource.com/chromium/src/+log/7f8965f2d8ef4ac323cc4654769e853174267f6f..a75f7d2fb6a32656361607654107dfa6dd4f1719

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

@dschuyler - 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.

Thanks!

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/51458ec148c09cf7f75feca928c22d6bf9cedb3d

commit 51458ec148c09cf7f75feca928c22d6bf9cedb3d
Author: dschuyler <dschuyler@chromium.org>
Date: Sat Oct 08 00:36:29 2016

[MD settings] align paper-input by baseline

Adjust paper-inputs that have elements before or after to line up by
their text baselines.

BUG= 651340 
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:closure_compilation

Review-Url: https://codereview.chromium.org/2400113002
Cr-Commit-Position: refs/heads/master@{#424028}

[modify] https://crrev.com/51458ec148c09cf7f75feca928c22d6bf9cedb3d/chrome/browser/resources/settings/appearance_page/appearance_page.html
[modify] https://crrev.com/51458ec148c09cf7f75feca928c22d6bf9cedb3d/chrome/browser/resources/settings/controls/settings_input.html
[modify] https://crrev.com/51458ec148c09cf7f75feca928c22d6bf9cedb3d/chrome/browser/resources/settings/languages_page/edit_dictionary_page.html
[modify] https://crrev.com/51458ec148c09cf7f75feca928c22d6bf9cedb3d/chrome/browser/resources/settings/settings_vars_css.html