Chrome Version: 71.0.3569.0 (Official Build) Revision	fb87327b9e0a0a50c96e084943e5525c25f76fd1-refs/branch-heads/3569@{#1} (32/64-bit)
OS: Windows(7,8,8.1,10).

What steps will reproduce the problem?
1. Launch Chrome and give print command on any webpage.
2. Change the 'Destination' to 'Save as PDF' and observe the 'More settings' button.

Actual: Bottom separator line is missing for 'More settings' button.
Expected: Bottom separator line should seen for 'More settings' button.

This is a regression issue, broken in M-71 series, below is manual regression range:

Good build: 71.0.3551.0 (Revision: 590851)
Bad build: 71.0.3552.2 (Revision: 591210)

Using the 'per-revision' script providing the bisect result:

You are probably looking for a change made after 591108 (known good), but no later than 591109 (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/974aa7b559b4361d7410479796becb0b933dc6a4..e73e92b7fbf4206ffdb20282ac73bcbed7cf910e

Suspecting: https://chromium.googlesource.com/chromium/src/+/e73e92b7fbf4206ffdb20282ac73bcbed7cf910e

@rbpotter: 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.

NOTE: 
1. This issue is not seen on Mac(10.12.6, 10.13.1, 10.13.6, 10.14.1) and Linux(14.04 LTs) Os.
2. This issue is also reproducible on latest Dev #71.0.3559.6

Thank you.
 

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