Chrome Version: 57.0.2987.110 (Official Build) 11f66db67ea1f20d200d6f9add50fc1c345d71f7-refs/branch-heads/2987@{#832}
OS: Windows 10(Touch device)

Steps:
1. Launch Chrome and navigate to chrome://md-settings
2. Tap/touch on 'Font size' drop down, tap on 'Sign into Chrome' button and then close sign in overlay
3. Observe

Actual: Unnecessary focus underline is seen for 'Font size' drop down even after closing sign in overlay via tap/touch

Expected: Focus underline should not be seen for 'Font size' drop down even after closing sign in overlay via tap/touch

This is a regression issue broken in M-53, below is bisect info.

Good build : 53.0.2768.0
Bad build : 53.0.2770.0

Narrow bisect:
https://chromium.googlesource.com/chromium/src/+log/2a1d902c9b711bddee9b8fab3c6643d2e24f8815..59650de52fb52324b91c67086e2d9afeac5d8114?pretty=fuller&n=100

Suspecting: r400318 ?

Please help to re-assign if your change is not the cause for this issue

Note:
This is touch device specific issue, same works fine via mouse click

 

Deleted: Actual_video.mp4 707 KB

	Actual_video.mp4 707 KB View Download

Deleted: Expected_video.mp4 522 KB

	Expected_video.mp4 522 KB View Download