Added the reply/loop icon to the video player.

chrome/browser/resources/file_manager/css/media_controls.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. */
 
 .media-button {
   height: 28px;
   position: relative;
   width: 26px;
 }
 
 .media-button > div {
   -webkit-transition: opacity 100ms linear;
   height: 100%;
   opacity: 0;
   pointer-events: none;
   position: absolute;
   width: 100%;
 }
 
-.media-button[state='0']:not(.disabled):not(:hover):not(:active) > .state0.normal,
+.media-button[state='0']:not(.disabled):not(:hover):not(:active) >
+    .state0.normal,
 .media-button[state='0']:not(.disabled):hover > .state0.hover,
 .media-button[state='0']:not(.disabled):active > .state0.active,
-.media-button[state='1']:not(.disabled):not(:hover):not(:active) > .state1.normal,
+.media-button[state='1']:not(.disabled):not(:hover):not(:active) >
+    .state1.normal,
 .media-button[state='1']:not(.disabled):hover > .state1.hover,
 .media-button[state='1']:not(.disabled):active > .state1.active,
+.media-button[state='2']:not(.disabled):not(:hover):not(:active) >
+    .state2.normal,
+.media-button[state='2']:not(.disabled):hover > .state2.hover,
+.media-button[state='2']:not(.disabled):active > .state2.active,
 .media-button.disabled > .disabled {
   opacity: 1;
 }
 
 /* Custom sliders for progress and volume. */
 
 /* Customize the standard input[type='range']. */
 .custom-slider > input[type='range'] {
   -webkit-appearance: none !important;  /* Hide the default thumb icon. */
   background: transparent;  /* Hide the standard slider bar */
@@ skipping 177 matching lines @@
     url('../images/media/media_pause_hover.png') 1x,
     url('../images/media/2x/media_pause_hover.png') 2x);
 }
 
 .media-button.play > .state1.active {
   background-image: -webkit-image-set(
     url('../images/media/media_pause_down.png') 1x,
     url('../images/media/2x/media_pause_down.png') 2x);
 }
 
+.media-button.play > .state2.normal {
+  background-image: -webkit-image-set(
+    url('../images/media/media_loop.png') 1x,
+    url('../images/media/2x/media_loop.png') 2x);
+}
+
+.media-button.play > .state2.hover {
+  background-image: -webkit-image-set(
+    url('../images/media/media_loop_hover.png') 1x,
+    url('../images/media/2x/media_loop_hover.png') 2x);
+}
+
+.media-button.play > .state2.active {
+  background-image: -webkit-image-set(
+    url('../images/media/media_loop_down.png') 1x,
+    url('../images/media/2x/media_loop_down.png') 2x);
+}
+
 .media-button.play > .disabled {
   background-image: -webkit-image-set(
     url('../images/media/media_play_disabled.png') 1x,
     url('../images/media/2x/media_play_disabled.png') 2x);
 }
 
 /* Time controls: a slider and a text time display. */
 
 .time-controls {
   -webkit-box-align: center;
@@ skipping 297 matching lines @@
   background-image: -webkit-image-set(
     url('../images/media/media_play.png') 1x,
     url('../images/media/2x/media_play.png') 2x);
 }
 
 .playback-state-icon[state='pause'] {
   background-image: -webkit-image-set(
     url('../images/media/media_pause.png') 1x,
     url('../images/media/2x/media_pause.png') 2x);
 }