File manager copy progress indicator made looking like uber tray sync indicator.

chrome/browser/resources/file_manager/css/file_manager.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. */
 
 html.col-resize * {
   cursor: col-resize !important;
 }
 
 /* Outer frame of the dialog. */
 body {
@@ skipping 117 matching lines @@
 }
 
 .butter-bar.error {
   background-color: rgba(221, 75, 57, 0.2);
   border: 1px solid rgba(221, 75, 57, 0.5);
   border-radius: 2px;
   padding: 2px 1em;
 }
 
 .progress-bar {
-  border: 1px solid #999;
+  background-image: -webkit-linear-gradient(top, #e9e9e9 0, #f9f9f9 100%);
+  border: 1px solid #a1a1a1;
+  border-radius: 3px;
   margin-top: 3px;
-  padding: 1px;
   width: 320px;
 }
 
 .progress-track {
-  -webkit-animation-duration: 800ms;
-  -webkit-animation-iteration-count: infinite;
-  -webkit-animation-name: bg;
-  -webkit-animation-timing-function: linear;
-  background-color: #ccc;
-  background-image: -webkit-linear-gradient(315deg, transparent,
-      transparent 33%, rgba(0, 0, 0, 0.12) 33%, rgba(0, 0, 0, 0.12) 66%,
-      transparent 66%, transparent);
-  background-position: 0 0;
-  background-repeat: repeat-x;
-  background-size: 16px 8px;
-  height: 5px;
+  background-color: rgb(76, 86, 106);
+  border: 1px solid black;
+  border-radius: 3px;
+  height: 6px;
+  margin: -1px;
+}
+
+.progress-track:before {
+  background-image: -webkit-linear-gradient(top, rgb(89, 103, 128) 0,
+                                                 rgb(76, 86, 106) 100%);
+  border: 1px solid rgb(124, 133, 147);
+  border-bottom-color: rgb(116, 124, 136);
+  border-radius: 3px;
+  border-top-color: rgb(173, 181, 195);
+  content: '';
+  display: block;
+  height: 4px;
 }
 
 @-webkit-keyframes bg {
   0% { background-position: 0 0; }
   100% { background-position: -16px 0; }
 }
 
 /* The top title of the dialog. */
 .dialog-title {
   -webkit-box-sizing: border-box;
@@ skipping 1252 matching lines @@
   left: 0;
   padding: 10px;
   position: absolute;
   right: 0;
   top: 28px;  /* Leave room for the file list header. */
 }
 
 .dialog-container:not([gdrive-welcome='page']) #no-search-results[show] {
   display: block;
 }