[ChromeOS] Reland - Make WebUI login use only needed resources.

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

 /* Copyright (c) 2011 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 the Out of the box experience (OOBE) flow.
  */
 
 html,
 body {
   height: 100%;
@@ skipping 596 matching lines @@
 }
 
 #close-button.visible {
   display: inline-block;
 }
 
 #bubble {
   -webkit-transition: 0.25s opacity;
 }
 
-#login-header-bar {
-  padding: 5px 8px;
-}
-
-#login-header-bar button,
-#login-header-bar button:active,
-#login-header-bar button:focus,
-#login-header-bar button:hover {
-  -webkit-box-shadow: none;
-  background: transparent none;
-  border: 0;
-  color: #666;
-  cursor: pointer;
-  height: 24px;
-  margin: 0;
-  min-width: 0;
-  padding: 0;
-  vertical-align: middle;
-}
-
-.header-bar-item {
-  -webkit-padding-start: 15px;
-  background-image: url('chrome://theme/IDR_DIVIDER_VERT');
-  background-position: left center;
-  background-repeat: no-repeat;
-  display: inline-block;
-  height: 24px;
-}
-
-#login-header-bar #shutdown-button {
-  -webkit-padding-start: 24px;
-  background-image: url('chrome://theme/IDR_ICON_POWER20');
-  background-position: left center;
-  background-repeat: no-repeat;
-}
-
-#login-header-bar #add-user-button {
-  -webkit-padding-start: 24px;
-  background-image: url('chrome://theme/IDR_ICON_ADD_USER20');
-  background-position: left center;
-  background-repeat: no-repeat;
-}
-
-html[dir=rtl] .header-bar-item,
-html[dir=rtl] #header,
-html[dir=rtl] #login-header-bar #shutdown-button,
-html[dir=rtl] #login-header-bar #add-user-button {
+html[dir=rtl] #header {
   background-position: right center;
 }
 
 body.login-display #oobe hr {
   -webkit-transition: all .8s ease;
   width: 1100px;  /* Necessary. Otherwise hr shrinks to 0 first when switching
                      from 640px to full width. */
 }
 
 body.login-display #oobe.signin hr,
@@ skipping 52 matching lines @@
   left: 10px;
   opacity: 1.0;
   position: absolute;
   right: 10px;
   text-shadow: 0 1px 1px #fff;
 }
 
 #offline-network-control {
   margin-left: 60px;
 }