ChromeOS: update alignment of user POD error bubble.

ui/login/login_ui_tools.js

Index: ui/login/login_ui_tools.js
diff --git a/ui/login/login_ui_tools.js b/ui/login/login_ui_tools.js
index 2759ceb7dd62e6badfe49d0476b9a174db7f46fe..d66d64b8c108eeccbe0fd8a7e37247c1f784f38f 100644
--- a/ui/login/login_ui_tools.js
+++ b/ui/login/login_ui_tools.js
@@ -19,10 +19,25 @@ cr.define('cr.ui.LoginUITools', function() {
           element.getBoundingClientRect().top -
           parseInt(window.getComputedStyle(element).marginTop) -
           parseInt(window.getComputedStyle(element).marginBottom);
-      if (wholeWindow)
+      if (wholeWindow) {
         maxAllowedHeight +=
            parseInt(window.getComputedStyle($('outer-container')).bottom);
+      }
       return maxAllowedHeight;
-    }
+    },
+
+    /**
+     * Computes max-width for an element so that it does fit the
+     * outer-container.
+     * @param {element} DOM element
+     */
+    getMaxWidthToFit : function(element) {
+      var maxAllowedWidth =
+          $('outer-container').offsetWidth -
+          element.getBoundingClientRect().left -
+          parseInt(window.getComputedStyle(element).marginLeft) -
+          parseInt(window.getComputedStyle(element).marginRight);
+      return maxAllowedWidth;
+    },
   }
 });