[ChromeOS] Update login.js to use disableTextSelectAndDrag.

BUG=none.
TEST=Expect no change. WebUI login still works and text on it is not selectable or draggable.


Review URL: http://codereview.chromium.org/7941027

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@102121 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/resources/chromeos/login/login.js

@@ -149,14 +149,6 @@ cr.define('cr.ui', function() {
 
 var Oobe = cr.ui.Oobe;
 
-// Disable text selection.
-document.onselectstart = function(e) {
-  e.preventDefault();
-}
-
-// Disable dragging.
-document.ondragstart = function(e) {
-  e.preventDefault();
-}
+disableTextSelectAndDrag();
 
 document.addEventListener('DOMContentLoaded', cr.ui.Oobe.initialize);