Fix background color of password entry field in user pods

ui/login/account_picker/user_pod_row.css

 /* 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.
  *
  * This is the stylesheet used by user pods row of account picker UI.
  */
 
 podrow {
   /* Temporarily disabled because animation interferes with updating screen's
    size. */
@@ skipping 158 matching lines @@
 .pod[auth-type='offlinePassword'].focused .password-entry-container {
   display: flex;
   flex: auto;
 }
 
 .password-container {
   flex: auto;
 }
 
 .pod input[type='password'] {
+  background-color: white;
   border: none;
   padding: 4px 6px;
   position: relative;
   top: 6px;
   width: 100%;
 }
 
 .capslock-hint-container {
   display: none;
 }
@@ skipping 381 matching lines @@
   top: 4px;
 }
 
 .pod.public-account.expanded.advanced .language-and-input-container {
   display: none;
 }
 
 .enter-button {
   font-size: 14px;
 }