Chrome Version: 67.0.3390.0 (Official Build) ae47769a6d274cb8eeca0f8e7b9198d0b043975f-refs/heads/master@{#548636}(32/64 bit)
 
OS: Win(7,8,8.1,10),Linux(14.04 LTS) and Mac(10.12.6, 10.13.1, 10.13.4).

Steps to reproduce:
1. Launch Chrome and go to chrome://settings/ .
2. Press tab key until focus reaches to 'Content settings' and press enter button.
3. Again press tab key once ,press enter key and observe.

Actual:  Focus does not stay on content setting  on back navigation.
Expected:  Focus should stay on content setting  on back navigation.

This is Regression issue broken in 'M-67’ and Using the per-revision bisect providing the bisect results,

Good Build:67.0.3368.0(Revision: 542341)
Bad Build: 67.0.3369.0  (Revision: 542817) 

You are probably looking for a change made after 542361 (known good), but no later than 542362 (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/feb3b5d8fc0436f4ae83736f450544142e9a21f1..b6477fef9acbe00a3e8b58b6963b518b57575ed3

Suspect: https://chromium.googlesource.com/chromium/src/+/b6477fef9acbe00a3e8b58b6963b518b57575ed3

@hcarmona: 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.

Kindly refer attached screen cast
 

Deleted: Actual_result.mp4 500 KB

	Actual_result.mp4 500 KB View Download

Deleted: Expected_result.mp4 491 KB

	Expected_result.mp4 491 KB View Download