Version: 53.0.2773.0
OS: Ubuntu 14.04,Windows

What steps will reproduce the problem?
(1)Launch chrome -> Navigate to "Chrome://md-settings" page
(2)Now click on Drop down of Font size -> Hover the Mouse on the  Drop down options  and observe for focus(Please refer Video)


Expected: On Mouse hovering focus should be seen on drop down options
Actual: Instead no focus is seen on Options

This is Non-Regression Issue seen  from M-48 (48.0.2563.3)

Note: Similar Issue is seen for Page Zoom Drop down
 

Deleted: Actual_Focus.ogv 1.5 MB

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