Chrome Version: 71.0.3578.75 (Official Build) Revision	06ef00b5279f93f8e0c1e73acedd49d7dcc09767-refs/branch-heads/3578@{#836} (32/64-bit)
OS: Windows(7,8,8.1,10) & Linux(14.04 LTS).

Pre-condition: 
1. Only 6 downloads entry must be present under chrome://download page.
2. Chrome download bar also be present on chrome://download page. 

What steps will reproduce the problem?
1. Launch Chrome and navigate to chrome://downloads page.
2. Press 'Tab' key from keyboard till focus reaches to 'Show in folder' option of last download entry and observe.

Actual: Gap is seen between vertical scroll bar and down arrow.
Expected: Gap should not seen between vertical scroll bar and down arrow.

This is a regression issue, broken in M-70 series, below is manual regression range:

Good build: 70.0.3502.3 (Revision: 577760)
Bad build: 70.0.3503.0 (Revision: 578159)

You are probably looking for a change made after 577767 (known good), but no later than 577768 (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/53f933e87f1c0f284d0ad640ebb4b085640dbd30..6cf1138b57ed4d2c36ad5f46b612be15046086e1

Suspecting: https://chromium.googlesource.com/chromium/src/+/6cf1138b57ed4d2c36ad5f46b612be15046086e1

@scottchen: 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.

NOTE: 
1. This issue is also reproducible on Stable #70.0.3538.110, Beta #71.0.3578.62, Dev #72.0.3622.0 & Canary #72.0.3624.0
2. This issue is not reproducible on Mac(10.13.1, 10.13.6, 10.14.2) OS.
3. Bottom area of last tiles is not seen properly on chrome://download page when blue focus ring reaches to 'Show in folder' option of last tiles whereas in good build (70.0.3502.3) last tiles is seen properly.

Kindly review the attached screen-cast for reference.

Thank You..!
 

Deleted: Download_Screenshot.png 12.6 KB

	Download_Screenshot.png 12.6 KB View Download

Deleted: Actual behavior.mp4 694 KB

	Actual behavior.mp4 694 KB View Download

Deleted: Expected behavior.mp4 599 KB

	Expected behavior.mp4 599 KB View Download