NOTE: All the default buttons that have double border are seen weird in other themes

Able to reproduce the issue on Ubuntu 14.04 using latest chrome version #62.0.3189.0.

Thanks...!!

Bisect Information:
-------------------
You are probably looking for a change made after 495214 (known good), but no later than 495215 (first known bad).

CHANGELOG URL:
--------------
https://chromium.googlesource.com/chromium/src/+log/826deb2b00f0b13fc8d2c9e8e53d5df0cdf12ec6..339cc036e7c749ce416ef9d9f46159d2dceadbdf

@estade: 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!!

Issue is observed in Win 10 using #62.0.3189.0 and not seen in Mac with the same version.

Thanks!1

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/fd97f8280d14e0638f766278936445ebc5ea1605

commit fd97f8280d14e0638f766278936445ebc5ea1605
Author: Evan Stade <estade@chromium.org>
Date: Fri Aug 18 17:42:33 2017

Fix button border/background painting.

Regression from I7e4922fcb73a185b873acf3525d

TBR=sky@chromium.org

Bug:  756719 , 756720 , 756728 , 756734 , 756737 , 756848 
Change-Id: I35f34055bbe0982d20d64ea1a0f05b1a5231a7a7
Reviewed-on: https://chromium-review.googlesource.com/621446
Reviewed-by: Evan Stade <estade@chromium.org>
Commit-Queue: Evan Stade <estade@chromium.org>
Cr-Commit-Position: refs/heads/master@{#495604}
[modify] https://crrev.com/fd97f8280d14e0638f766278936445ebc5ea1605/ui/views/controls/button/button.cc

 Above issue is fixed on latest Dev version 62.0.3192.0 for Win and Linux OS with the mentioned steps..

Thanks!