User pods centered with any resolution.

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

Index: chrome/browser/resources/chromeos/login/user_pod_row.js
diff --git a/chrome/browser/resources/chromeos/login/user_pod_row.js b/chrome/browser/resources/chromeos/login/user_pod_row.js
index 4d5a1c8cdc4428feeb97a3cef86d9a630dd5ef9a..2297a5da5b82e70e35d59c48727ab04ad02ed7ad 100644
--- a/chrome/browser/resources/chromeos/login/user_pod_row.js
+++ b/chrome/browser/resources/chromeos/login/user_pod_row.js
@@ -8,13 +8,6 @@
 
 cr.define('login', function() {
   /**
-   * Pod width. 170px Pod + 10px padding + 10px margin on both sides.
-   * @type {number}
-   * @const
-   */
-  var POD_WIDTH = 170 + 2 * (10 + 10);
-
-  /**
    * Number of displayed columns depending on user pod count.
    * @type {Array.<number>}
    * @const
@@ -978,6 +971,9 @@ cr.define('login', function() {
       this.removeEventListener('mouseout', this.deferredResizeListener_);
       this.columns = columns;
       this.rows = rows;
+      if (this.parentNode == Oobe.getInstance().currentScreen) {
+        Oobe.getInstance().updateScreenSize(this.parentNode);
+      }
     },
 
     /**