Chrome Version: 71.0.3569.0 (Official Build) fb87327b9e0a0a50c96e084943e5525c25f76fd1-refs/branch-heads/3569@{#1}(32/64-bit)
OS: Mac(10.12.6, 10.13.1, 10.14.1, 10.13.6)

What steps will reproduce the problem?
1. Launch chrome, give print command (Ctrl + P) to open Print Preview overlay.
2. Press 'Cmd -' and observe.

Actual Result  : Print preview overlay gets closed on pressing 'Cmd -'.
Expected Result: Print preview overlay should not get closed on pressing 'Cmd -'.

This is a regression issue broken in ‘M-67’ and below is the 'per-revision' bisect information:
Good Build : 67.0.3394.0 (Revision : 549696)
Bad Build  : 67.0.3395.0 (Revision : 549859)

You are probably looking for a change made after 549701 (known good), but no later than 549702 (first known bad).

CHANGE-LOG 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/81487d859688a8121fc415d258bfb845a0a07c8b..b7554e2a1d0a8108947a624e440819bc1a3fbade

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.

Kindly refer the attached screen-cast.

Note: 
1. Issue is specific to Mac OS
2. Issue is also reproducible on latest Canary #71.0.3570.0

Thank you!
 

Deleted: ActualVideo.mov 1.2 MB

	ActualVideo.mov 1.2 MB View Download

Deleted: ExpectedVideo.mov 2.2 MB

	ExpectedVideo.mov 2.2 MB View Download