Anti-shelf-overlapping fixes for several menus.

ui/login/account_picker/screen_account_picker.js

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /**
  * @fileoverview Account picker screen implementation.
  */
 
 login.createScreen('AccountPickerScreen', 'account-picker', function() {
   /**
@@ skipping 139 matching lines @@
           !activatedPod.user.supervisedUser) {
         activatedPod.showSigninUI();
       } else {
         // We want bubble's arrow to point to the first letter of input.
         /** @const */ var BUBBLE_OFFSET = 7;
         /** @const */ var BUBBLE_PADDING = 4;
         $('bubble').showContentForElement(activatedPod.mainInput,
                                           cr.ui.Bubble.Attachment.BOTTOM,
                                           error,
                                           BUBBLE_OFFSET, BUBBLE_PADDING);
+        // Move error bubble up if it overlaps the shelf.
+        var maxHeight =
+            cr.ui.LoginUITools.getMaxHeightBeforeShelfOverlapping($('bubble'));
+        if (maxHeight < $('bubble').offsetHeight) {
+          $('bubble').showContentForElement(activatedPod.mainInput,
+                                            cr.ui.Bubble.Attachment.TOP,
+                                            error,
+                                            BUBBLE_OFFSET, BUBBLE_PADDING);
+        }
       }
     },
 
     /**
      * Loads given users in pod row.
      * @param {array} users Array of user.
      * @param {boolean} showGuest Whether to show guest session button.
      */
     loadUsers: function(users, showGuest) {
       $('pod-row').loadPods(users);
@@ skipping 147 matching lines @@
      * Updates the list of available keyboard layouts for a public session pod.
      * @param {string} userID The user ID of the public session
      * @param {!Object} list List of available keyboard layouts
      */
     setPublicSessionKeyboardLayouts: function(userID, list) {
       $('pod-row').setPublicSessionKeyboardLayouts(userID, list);
     }
   };
 });