Fix GSM in Setings

This fixes a bug introduced in https://codereview.chromium.org/427903004

BUG=406114
R=pneubeck@chromium.org

Review URL: https://codereview.chromium.org/492373002

Cr-Commit-Position: refs/heads/master@{#291415}
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@291415 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/resources/options/chromeos/internet_detail.js

@@ -1315,7 +1315,7 @@ cr.define('options.internet', function() {
       setOrHideParent('prl-version',
                       getManagedValue(data, 'Cellular.PRLVersion'));
 
-      var family = getManagedValue(data, 'Cellular.GSM');
+      var family = getManagedValue(data, 'Cellular.Family');
       detailsPage.gsm = family == 'GSM';
       if (detailsPage.gsm) {
         $('iccid').textContent = getManagedValue(data, 'Cellular.ICCID');