Clean-up: Change chrome/browser's CSS time units from s to ms.

chrome/browser/resources/options/handler_options.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.
  */
 
 .handlers-column-headers {
   display: -webkit-box;
   font-size: 13px;
   font-weight: bold;
@@ skipping 16 matching lines @@
 .handlers-remove-column {
   -webkit-box-flex: 1;
 }
 
 .handlers-remove-link {
   color: #555;
   cursor: pointer;
   opacity: 0;
   padding-left: 14px;
   text-decoration: underline;
-  -webkit-transition: 0.15s opacity;
+  -webkit-transition: 150ms opacity;
 }
 
 div > .handlers-remove-column {
   opacity: 0;
 }
 
 div:not(.none):hover > .handlers-remove-column {
   opacity: 1;
 }
 
 #handlers {
   min-height: 250px;
 }
 
 #handler-options list {
   border-radius: 2px;
   border: solid 1px #D9D9D9;
   margin-bottom: 10px;
   margin-top: 4px;
 }