Update some spinners on ChromeOS

chrome/browser/resources/chromeos/wallpaper_manager/css/wallpaper_manager.css

 /* Copyright (c) 2013 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. */
 
 html {
   height: 100%;
 }
 
 body {
   -webkit-app-region: drag;
@@ skipping 111 matching lines @@
 }
 
 #category-container {
   flex: 1;
   position: relative;
 }
 
 #spinner-container {
   -webkit-box-align: center;
   -webkit-box-pack: center;
+  background: url(chrome://resources/images/throbber.svg) center/32px no-repeat;
   display: -webkit-box;
   height: 287px;
   padding-bottom: 15px;
   padding-top: 5px;
   position: absolute;
   top: 0;
   width: 100%;
 }
 
-@-webkit-keyframes spin {
-  from {
-    -webkit-transform: rotate(0);
-  }
-  to {
-    -webkit-transform: rotate(360deg);
-  }
-}
-
-#spinner-container #spinner {
-  -webkit-animation-duration: 1s;
-  -webkit-animation-iteration-count: infinite;
-  -webkit-animation-name: spin;
-  -webkit-animation-timing-function: linear;
-  background-image: url(../images/ui/spinner.png);
-  background-position: center;
-  background-repeat: no-repeat;
-  height: 16px;
-  width: 16px;
-}
-
 #wallpaper-set-by-message {
   -webkit-padding-end: 5px;
   -webkit-padding-start: 15px;
   height: 17px;
 }
 
 #wallpaper-set-by-message:empty {
   display: none;
 }
 
@@ skipping 211 matching lines @@
   margin-right: 4px;
   opacity: 0.7;
   position: relative;
   top: 4px;
   width: 17px;
 }
 
 #surprise-me #checkbox.checked {
   background-image: url(../images/ui/checkbox_checked.png);
 }