Chrome Version: 55.0.2883.18 (Official Build)fef9e129659e95716a20748335f5921e324bab8a-refs/branch-heads/2883@{#164} 32/64-bit.
OS: Windows (7,8,8.1,10).

What steps will reproduce the problem?
1. Launch chrome and navigate to chrome://md-settings page.
2. Keep focus on right arrow icon (beside 'SIGN IN TO CHROME' button) using 'Tab' key under 'People' section.
3. Again press the 'Tab' key to reach the focus at 'SIGN IN TO CHROME' button and observe the right arrow icon.

On pressing the 'Tab' key, Right arrow icon slightly shifted towards left.
On pressing the 'Tab' key, Right arrow icon should stay on same position.

This is a regression issue, broken in M-55 series, below is bisect info.

Good build: 55.0.2875.0
Bad build: 55.0.2876.0

Narrow bisect:
https://chromium.googlesource.com/chromium/src/+log/855770d4a1e3c30a3d08f512043b9c04966922e2..e7645564cb92a489fa6c90ec50984e3c5661d332?pretty=fuller&n=100

Suspecting: r421939

Note: This issue is not seen on Mac and Linux OS

Kindly review the attached screen-cast for reference.
 

Deleted: Actual behavior.mp4 785 KB

	Actual behavior.mp4 785 KB View Download