GitLab

A11y options list and remove supervised user menu are moved up in case of shelf-overlapping. Network list gets scrollbar in that case.

Also remove supervised user button aligned.

BUG=382851

Review URL: https://codereview.chromium.org/399613002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@287801 0039d316-1c4b-4281-b951-d872f2087c98