Chrome Version       : 54.0.2803.0 canary
OS: Windows 8

What steps will reproduce the problem?
1. Open Task Manager
2. Resize a column to make it wider, or just have lots of things.

(also: Edit a bookmark, Mash the "New Folder" button until you need scrollbars)
(note I'm seeing this on an RDP session at 150% font scaling - but that might be irrelevant)

What is the expected result?

Scrollbars


What happens instead of that?

No scrollbars.

Bisected to 
https://chromium.googlesource.com/chromium/src/+log/8c82b175a6fa0cc4edd1c6647fd77a7f44525a65..83a3c26417896b207efe22b116a03a9a162c0ca5

Probably r404155


commit	83a3c26417896b207efe22b116a03a9a162c0ca5	[log] [tgz]
author	tomhudson <tomhudson@google.com>	Thu Jul 07 14:15:18 2016
Remove NativeThemeWin::PaintIndirect


UserAgentString: Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.103 Safari/537.36