Chrome Version: 53.0.2781.0 (Official Build) d855b4a44ca015cc874b69b828717bb4293c3092-refs/heads/master@{#402177} 32/64-bit.
OS: Windows (7,8,8.1,10), Linux (14.04 LTS), Mac OS X(10.10.5, 10.11.4)

Precondition: 
1. Enable the 'Material Design history' flag from chrome://flags.
2. Navigates to few webpages such that vertical scroll bar appears in chrome://history page.

What steps will reproduce the problem?
1. Launch chrome and navigates to chrome://history page.
2. zoom in the page till horizontal scroll bar appears.
3. Now observe the vertical scroll bar.

Vertical scroll bar disappears after zooming the page.
Vertical scroll bar should seen after zooming the page.

This is a regression issue, broken in 'M-51', below is manual bisect and narrow bisect:

Good Build : 51.0.2677.0
Bad Build : 51.0.2678.0

Narrow Bisect info:
https://chromium.googlesource.com/chromium/src/+log/b3afb3ccd55aee90f2b0dd27a22950bd6f66f2fb..8cfeda6bf66b061ff207f772c38d054b57d533df?pretty=fuller&n=10000

Suspecting : r380925

Kindly review the attached screen-cast for reference.
 

Deleted: Actual behavior.mp4 906 KB

	Actual behavior.mp4 906 KB View Download

Deleted: Expected_behavior.mp4 1.2 MB

	Expected_behavior.mp4 1.2 MB View Download