Set status bar height to 44px on login screen

chrome/browser/resources/chromeos/login/header_bar.css

 /* Copyright (c) 2012 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. */
 
 #login-header-bar {
   -webkit-padding-start: 15px;
-  border-bottom: 3px solid black;
   bottom: 0;
   left: 0;
-  padding-bottom: 7px;
+  padding-bottom: 6px;
   position: absolute;
   right: 0;
 }
 
 #login-header-bar {
   /* Using copy of Ash launcher background with 0.8 opacity applied to it.
      Otherwise if opacity: 0.8 is set here it will affect button text as well.
      Have to position background differently so that opacity is not applied
      to child elements. */
   background-image: url(chrome://theme/IDR_LAUNCHER_BACKGROUND);
@@ skipping 121 matching lines @@
 #login-header-bar #cancel-multiple-sign-in-button {
   /* TODO(dzhioev): replace with appropriate image when possible. */
   background-image: url(chrome://theme/IDR_PANEL_CLOSE);
 }
 
 .button-restricted {
   border: 1px solid transparent;
   color: white !important;
   opacity: 0.4 !important;
 }