Fix accessibility issues in AudioPlayer and VideoPlayer.

ui/file_manager/video_player/js/video_player.js

Index: ui/file_manager/video_player/js/video_player.js
diff --git a/ui/file_manager/video_player/js/video_player.js b/ui/file_manager/video_player/js/video_player.js
index eaa6f31cb3e336c0b298c0e1c6841a88d93b807b..ac4d88cd456abc3897e0b497fcba9e41b4095d1d 100644
--- a/ui/file_manager/video_player/js/video_player.js
+++ b/ui/file_manager/video_player/js/video_player.js
@@ -28,9 +28,9 @@ function FullWindowVideoControls(
   window.addEventListener('resize', this.updateStyle.wrap(this));
   var currentWindow = chrome.app.window.current();
   currentWindow.onFullscreened.addListener(
-      this.onFullScreenChanged_.bind(this, true));
+      this.onFullScreenChanged.bind(this, true));
   currentWindow.onRestored.addListener(
-      this.onFullScreenChanged_.bind(this, false));
+      this.onFullScreenChanged.bind(this, false));
   document.addEventListener('keydown', function(e) {
     switch (util.getKeyModifiers(e) + e.keyIdentifier) {
       // Handle debug shortcut keys.
@@ -168,19 +168,6 @@ FullWindowVideoControls.prototype.toggleFullScreen_ = function() {
 };
 
 /**
- * Updates video control when the window is fullscreened or restored.
- * @param {boolean} fullscreen True if the window gets fullscreened.
- * @private
- */
-FullWindowVideoControls.prototype.onFullScreenChanged_ = function(fullscreen) {
-  if (fullscreen) {
-    this.playerContainer_.setAttribute('fullscreen', '');
-  } else {
-    this.playerContainer_.removeAttribute('fullscreen');
-  }
-};
-
-/**
  * Media completion handler.
  */
 FullWindowVideoControls.prototype.onMediaComplete = function() {