Show reload button only when the slider is at the end.

ui/file_manager/video_player/js/media_controls.js

Index: ui/file_manager/video_player/js/media_controls.js
diff --git a/ui/file_manager/video_player/js/media_controls.js b/ui/file_manager/video_player/js/media_controls.js
index efe023140fe66457741f3cc7843dd8f02c96ba10..5bbbd9eca439db8895c7f892efb4ce2d84d2598e 100644
--- a/ui/file_manager/video_player/js/media_controls.js
+++ b/ui/file_manager/video_player/js/media_controls.js
@@ -489,15 +489,15 @@ MediaControls.prototype.onPlayStateChanged = function() {};
  * @private
  */
 MediaControls.prototype.updatePlayButtonState_ = function(playing) {
-  if (playing) {
+  if (this.media_.ended && this.progressSlider_.isAtEnd()) {
     this.playButton_.setAttribute('state',
-                                  MediaControls.ButtonStateType.PLAYING);
-  } else if (!this.media_.ended) {
+                                  MediaControls.ButtonStateType.ENDED);
+  } else if (playing) {
     this.playButton_.setAttribute('state',
-                                  MediaControls.ButtonStateType.DEFAULT);
+                                  MediaControls.ButtonStateType.PLAYING);
   } else {
     this.playButton_.setAttribute('state',
-                                  MediaControls.ButtonStateType.ENDED);
+                                  MediaControls.ButtonStateType.DEFAULT);
   }
 };
 
@@ -708,6 +708,14 @@ MediaControls.Slider.prototype.onInputDrag_ = function(on) {
 };
 
 /**
+ * Check if the slider position is at the end of the control.
+ * @return {boolean} True if the slider position is at the end.
+ */
+MediaControls.Slider.prototype.isAtEnd = function() {
+  return this.input_.value === this.input_.max;
+};
+
+/**
  * Create a customized slider with animated thumb movement.
  *
  * @param {HTMLElement} container The containing div element.