Submit button incompatiable with desktop chrome.

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 143 matching lines @@
   left: auto;
   right: 10px;
 }
 
 .name-container,
 .pod.focused:not(.multiprofiles-policy-applied) .auth-container {
   background-color: white;
   display: flex;
   position: absolute;
   top: 160px;
+/* On chromeos we extend the width to cover the padding on the user pods. This
+ is so the submit button on chromeos can extend onto the padding as shown on
+ mocks. */
+<if expr="not chromeos">
+  width: 160px;
+</if>
+<if expr="chromeos">
   width: 170px;
+</if>
 }
 
 .auth-container .submit-button[disabled] {
   color: #000;
   opacity: 0.26;
 }
 
 .auth-container .submit-button {
   box-sizing: border-box;
   color: var(--google-blue-500);
@@ skipping 64 matching lines @@
   padding: 4px 6px;
   position: relative;
   top: 6px;
   width: 100%;
 }
 
 .capslock-hint-container {
   display: none;
 }
 
+<if expr="chromeos">
 .capslock-on .capslock-hint-container {
   display: block;
   flex: none;
   height: 43px;
   position: relative;
   width: 20px;
 }
+</if>
 
 .capslock-hint {
   -webkit-margin-end: 6px;
   -webkit-margin-start: -2px;
   margin: auto;
   position: relative;
   top: 15px;
 }
 
 .password-label,
@@ skipping 625 matching lines @@
   -webkit-animation: ellipsis-component2 1.5s infinite;
 }
 
 @-webkit-keyframes ellipsis-component2 {
   0% { opacity: 0; }
   25% { opacity: 0; }
   50% { opacity: 0; }
   75% { opacity: 1; }
   100% { opacity: 0; }
 }