Chrome version: 67.0.3372.0 (Official Build)  Revision	ad7f48548867b059f459e13c53bb8e2e96027381-refs/heads/master@{#543592}(32/64-bit)
OS: Windows (7,8,8.1,10),Linux (14.04 LTS),Mac OS X(10.12.6,10.13.1,10.13.4)

What steps will reproduce the problem?
1. Launch chrome,navigate to NTP and open devtools
2. Go to 'Network' section and press 'F5' key to record some activity.
3. Click on any item in list,click on 'Header' tab and press 'Shift + Tab' key to bring grey focus highlight on 'Header' tab.
4. Now hover mouse over 'close button,observe
 
Actual: Close button 'x' overlaps with 'Header' tab
Expected: Close button 'x' shouldn't overlap with 'Header' tab

This is regression issue, broken in ‘M 67’ and below is the bisect info :
Good build: 67.0.3371.0  (Revision: 543279).
Bad build: 67.0.3372.0 (Revision: 543592).

You are probably looking for a change made after 543546 (known good), but no later than 543547 (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/beaf12c52ec58e3891e8054542f3b28b035b6f72..89abaf826732cad0542766ccc6e68716ab180250

Suspect : https://chromium.googlesource.com/chromium/src/+/89abaf826732cad0542766ccc6e68716ab180250

From the CL above, assigning the issue to the concern owner 

@pfeldman- 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.
 

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