Fix user deletion button width in user account settings.

BUG=70569
TEST=manually

Review URL: http://codereview.chromium.org/6282014

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@72475 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/resources/options/chromeos_accounts_options_page.css

@@ -38,6 +38,8 @@
   width: 16px;
   height: 16px;
   margin-top: 8px;
+  min-width: 16px;
+  padding: 1px 6px 1px 6px;
 }
 
 html[dir=ltr] .remove-user-button {