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

chrome/browser/resources/options/chromeos/system_options_page.css

 .touchpad-sensitivity-more {
   float: right;
 }
 
 html[dir=rtl] .touchpad-sensitivity-more {
   float: left;
 }
 
 .option-name {
    display: inline;
@@ skipping 23 matching lines @@
 
 #bluetooth-finder-container,
 #bluetooth-scanning-status {
   -webkit-box-orient: horizontal;
   display: -webkit-box;
   vertical-align: baseline;
 }
 
 #bluetooth-scanning-label,
 #bluetooth-scanning-icon {
-  -webkit-transition: 0.25s opacity;
+  -webkit-transition: 250ms opacity;
 }
 
 #bluetooth-scanning-label {
   -webkit-margin-start: 5px;
   color: gray;
 }
 
 #bluetooth-scanning-icon {
   -webkit-margin-start: 10px;
   vertical-align: middle;
@@ skipping 103 matching lines @@
 .bluetooth-passkey-field {
   -webkit-margin-start: 10px;
   width: 100px;
 }
 
 .bluetooth-button-group {
   -webkit-padding-end: 5px;
   vertical-align: middle;
 }