Manual regression range:
Good Build: 55.0.2867.0
Bad Build:  55.0.2868.0

Deleted: Actual_Scroll.mp4 365 KB

	Actual_Scroll.mp4 365 KB View Download

Deleted: Expected_Scroll.mp4 558 KB

	Expected_Scroll.mp4 558 KB View Download

Correction in steps:
1.Launch chrome and navigate to chrome://history
2.Press tab key till focus reaches actions icon of visited history.
3.Click on page and press "home" and "end" button to scroll up/down,observe.

Actual: Home and end button for scrolling doesn't work in chrome://history/ page
 
Expected: Home and end button for scrolling should work properly in chrome://history/ page

Using the per-revision bisect providing the bisect results,
Good build: 55.0.2867.0 (Revision: 419930).
Bad build: 55.0.2868.0 (Revision: 420217).

You are probably looking for a change made after 419955 (known good), but no later than 419956 (first known bad).
CHANGELOG URL:
  https://chromium.googlesource.com/chromium/src/+log/eedb95b1a034bb392ed83e84ee690395a0db3e27..a1bc7bb78d1a777435f8aa73bdcd4eaae4eff8b3

@calamity -- 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.
Thank You.

Updating the latest behavior of the bug. Issue is still observed on latest Dev M56-56.0.2891.0.
 	
calamity@ Any update on this bug? Could you please take a look in it if this is related to your change, else please feel free to reassign to the concerned dev person who can work on it. 

This is a natural consequence of the new keyboard navigation. WAI.