[WebUI] Fix rest of CSS style nits in misc. dirs so I can turn on CSS checker.

chrome/browser/resources/chromeos/login/oobe.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.
  *
  * This is the stylesheet used by the Out of the box experience (OOBE) flow,
  * sign in and lock screens.
  */
 
 html,
 body {
@@ skipping 39 matching lines @@
 #eula a {
   color: rgb(0, 102, 104);
   text-decoration: none;
 }
 
 #eula #stats-help-link {
   color: rgb(49, 106, 197);
 }
 
 hr.shadow {
-  -webkit-mask: -webkit-linear-gradient(left, rgba(0,0,0,0),
-                                        black 50%, rgba(0,0,0,0));
+  -webkit-mask: -webkit-linear-gradient(left, rgba(0, 0, 0, 0),
+                                        black 50%, rgba(0, 0, 0, 0));
   border: none;
   opacity: 0.3
 }
 
 hr.top {
-  background: -webkit-linear-gradient(rgba(0,0,0,0.3), rgba(0,0,0,0.0));
-  border-top: 1px solid rgba(0,0,0,0.5);
+  background: -webkit-linear-gradient(rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0));
+  border-top: 1px solid rgba(0, 0, 0, 0.5);
   height: 4px;
 }
 
 hr.bottom {
   background: -webkit-linear-gradient(bottom,
-                                      rgba(0,0,0,0.2), rgba(0,0,0,0.0));
-  border-bottom: 1px solid rgba(0,0,0,0.5);
+                                      rgba(0, 0, 0, 0.2), rgba(0, 0, 0, 0));
+  border-bottom: 1px solid rgba(0, 0, 0, 0.5);
   height: 4px;
   z-index: 0;
 }
 
 #header {
   -webkit-padding-start: 34px;
   background-image: url('chrome://theme/IDR_PRODUCT_LOGO_32');
   background-position: left center;
   background-repeat: no-repeat;
   background-size: 32px;
@@ skipping 672 matching lines @@
 }
 
 #notification-area a {
   color: rgb(37, 79, 155);
 }
 
 #notification-area .butter-bar {
   margin: 0 auto;
   max-width: 850px;
 }