ChromeOS: update alignment of user POD error bubble.

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 162 matching lines @@
             [activatedPod.user.emailAddress]);
         activatedPod.showSigninUI();
       } else {
         if (loginAttempts == 1) {
           chrome.send('firstIncorrectPasswordAttempt',
               [activatedPod.user.emailAddress]);
         }
         // Update the pod row display if incorrect password.
         $('pod-row').setFocusedPodErrorDisplay(true);
         // We want bubble's arrow to point to the first letter of input.
-        /** @const */ var BUBBLE_OFFSET = 7;
-        /** @const */ var BUBBLE_PADDING = 4;
+        /** @const */ var BUBBLE_OFFSET = 0;
+        /** @const */ var BUBBLE_PADDING = -6;
 
-        // Anchor the bubble to the pod instead of the input if the pin keyboard
-        // is showing to avoid covering parts of the pin keyboard.
-        var bubbleAnchor;
-        if (activatedPod.pinContainer)
-          bubbleAnchor = activatedPod;
-        else
-          bubbleAnchor = activatedPod.mainInput;
+        // Anchor the bubble to the pod instead of the input.
+        var bubbleAnchor = activatedPod;

[jdufault, 2016/11/01 15:32:52]

This works as expected when PIN is enabled?

PIN greatly expands pod height.

 
         // We want the bubble to point to where the input is after it is done
         // transitioning.
         var showBottomCallback = function() {
           activatedPod.removeEventListener("webkitTransitionEnd",
               showBottomCallback);
           $('bubble').showContentForElement(bubbleAnchor,
                                             cr.ui.Bubble.Attachment.BOTTOM,
                                             error,
-                                            BUBBLE_OFFSET, BUBBLE_PADDING);
+                                            BUBBLE_OFFSET, BUBBLE_PADDING,
+                                            true);
         };
         activatedPod.addEventListener("webkitTransitionEnd",
             showBottomCallback);
         ensureTransitionEndEvent(activatedPod);
 
         // Move error bubble up if it overlaps the shelf.
         var maxHeight =
             cr.ui.LoginUITools.getMaxHeightBeforeShelfOverlapping($('bubble'));
         if (maxHeight < $('bubble').offsetHeight) {
           var showTopCallback = function() {
@@ skipping 215 matching lines @@
      * @param {string} userID The user ID of the public session
      * @param {string} locale The locale to which this list of keyboard layouts
      *     applies
      * @param {!Object} list List of available keyboard layouts
      */
     setPublicSessionKeyboardLayouts: function(userID, locale, list) {
       $('pod-row').setPublicSessionKeyboardLayouts(userID, locale, list);
     }
   };
 });