Prevent VK flashing after press a button in login header bar

ui/login/account_picker/user_pod_row.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 User pod row implementation.
  */
 
 cr.define('login', function() {
   /**
@@ skipping 2919 matching lines @@
       var pod = findAncestorByClass(e.target, 'pod');
       if ((!pod || pod.parentNode != this) && !this.alwaysFocusSinglePod) {
         this.focusPod();
       }
 
       if (pod)
         pod.isActionBoxMenuHovered = true;
 
       // Return focus back to single pod.
       if (this.alwaysFocusSinglePod && !pod) {
+        if ($('login-header-bar').contains(e.target))
+          return;
         this.focusPod(this.focusedPod_, true /* force */);
         this.focusedPod_.userTypeBubbleElement.classList.remove('bubble-shown');
         this.focusedPod_.isActionBoxMenuHovered = false;
       }
     },
 
     /**
      * Handler of mouse move event.
      * @param {Event} e Click Event object.
      * @private
@@ skipping 199 matching lines @@
        if (pod && pod.multiProfilesPolicyApplied) {
          pod.userTypeBubbleElement.classList.remove('bubble-shown');
        }
      }
   };
 
   return {
     PodRow: PodRow
   };
 });