GitLab

BUG=101399
TEST= Navigate inside the avatar menu using keyboard.
Tab key and down arrow key to navigate forward.
Shift-Tab key and up arrow key to navigate backward.
Enter key to open/edit a profile.

Review URL: http://codereview.chromium.org/8834010

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@113577 0039d316-1c4b-4281-b951-d872f2087c98