Chrome version: 63.0.3223.0 569732c0a96ec8d0c4c5df7f7012188696c7d37c-refs/heads/master@{#503964}(32/64 bit)
OS: Windows(7,8,10), Mac(10.12.6), Linux(14.04 LTS).

Steps to reproduce:
1.Launch Chrome and Sign-in in gmail.
2.Go to Compose mail and zoomin to 125% and observe.

Actual Result: Horizontal Scrollbar is seen in Compose window after zoom-in to 125%.
Expected Result: Horizontal Scrollbar should not be seen in Compose window after zoom-in to 125%.

This is Regression Issue broken in M-62 and and Using the per-revision bisect providing the bisect results,
Good Build: 62.0.3178.0(Revision:492240)
Bad Build: 62.0.3179.0(Revision:492477)

You are probably looking for a change made after 492372 (known good), but no later than 492373 (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/8ae3ea1c2efcf9d2786cb1af66315b08f0a95051..01cf6fd553bcc6d5a9ca6763eed42fbca5ecc494

Suspect:https://chromium.googlesource.com/chromium/src/+/01cf6fd553bcc6d5a9ca6763eed42fbca5ecc494

szager: Could you please look into the issue, pardon me if it has nothing to do with your changes and if possible please assign it to concern owner.
 

Deleted: actual.mp4 477 KB

	actual.mp4 477 KB View Download

Deleted: expected.mp4 528 KB

	expected.mp4 528 KB View Download