GitLab

This updates a string (s/sign out/lock/) and the font size for the list of accounts.

TBR=pkasting
BUG=315262

Review URL: https://codereview.chromium.org/60843002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@233476 0039d316-1c4b-4281-b951-d872f2087c98