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

chrome/browser/resources/ntp4/most_visited_page.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.
  */
 
 .most-visited {
   position: absolute;
 }
 
 .most-visited {
@@ skipping 25 matching lines @@
 .filler {
   pointer-events: none;
 }
 
 .most-visited .close-button {
   opacity: 0;
   position: absolute;
   right: 0;
   top: 0;
   z-index: 5;
-  -webkit-transition: opacity 0.15s;
+  -webkit-transition: opacity 150ms;
 }
 
 html[dir=rtl] .most-visited .close-button {
   left: 0;
   right: auto;
 }
 
 .most-visited:hover .close-button {
   opacity: 1;
-  -webkit-transition-delay: 0.5s;
+  -webkit-transition-delay: 500ms;
 }
 
 .most-visited .close-button:hover {
   -webkit-transition: none;
 }
 
 .most-visited .favicon {
   background: no-repeat 5px 50%;
   bottom: 7px;
   box-sizing: border-box;
@@ skipping 28 matching lines @@
 
 .thumbnail {
   background: no-repeat;
   background-size: 100%;
   border-radius: 3px;
   /* These max dimensions are not necessary, as the sizing logic in the .js
    * should be sufficient, but they're here for extra insurance. We never want
    * to scale a thumbnail larger than this size. */
   max-height: 132px;
   max-width: 212px;
-  -webkit-transition: opacity 0.15s;
+  -webkit-transition: opacity 150ms;
 }
 
 .filler .thumbnail {
   /* TODO(estade): there seems to be a webkit bug where this border is not
    * always removed when it should be. Investigate. */
   border: 1px solid;
   visibility: visible;
 }
 
 .thumbnail-shield {
@@ skipping 28 matching lines @@
   -webkit-box-shadow: inset 0 1px 10px rgba(0, 0, 0, 0.2);
 }
 
 .thumbnail-wrapper {
   border: 1px solid transparent;
   border-radius: 3px;
   display: block;
   position: relative;
   z-index: 5;
   -webkit-box-flex: 1;
-  -webkit-transition: background-color .15s;
+  -webkit-transition: background-color 150ms;
 }
 
 .filler .thumbnail-wrapper {
   visibility: visible;
 }
 
 /* 'finishing-drag' is the state we are in after dropping on the trash can.
  * Override opacity of the tile to 1, so that the new tile animation
  * occurs simultaneously with the trash animation. */
 .tile.dragging.finishing-drag {
   opacity: 1;
 }
 
 /* Don't display the new tile until there's something to show.  */
 .blacklisted {
   opacity: 0;
 }